The shaft log hose (which connects the stuffing box … Stopfbüchse aus Messing mit Abstreifring und doppelter O-Ring-Abdichtung aus EPDM. Although some stuffing boxes are rigidly mounted to the shaft log, where they serve as a pseudo shaft support, most ‘float’ via a length of flexible hose, which is retained to the log at one end, and the stuffing box at the other end, using hose clamps, typically two in each location. Effectively and quickly seals the polished rod during initial installation with minimum adjustment. The purpose of a stuffing box is to allow the propeller shaft to exit the hull while keeping water out. What are the consequences of this leakage? Packing has short life 12. Surveyor recommended a splash guard, and I finally got around to making one last weekend from a $15 commercial cutting board and cheapo … For fiberglass vessels, in order to mitigate the effects of stray current corrosion, stuffing boxes should be connected to the vessel’s bonding system using a minimum of an 8AWG wire. 13 posts • Page 1 of 1. Water helps lubricate the packing material so its OK for a stuffing box to leak a few drips (3 to 4 per minute) while the vessel is underway. The standard adapter will fit most stuffing boxes in use in the United States, and custom adapters can be special ordered to fit other stuffing box designs. they need to be tightened to create tension against each other.  Tightening one, and then the other, using one wrench, is inadequate and may lead to a loosening and flooding. Periodically spraying the stuffing box with a corrosion inhibitor will reduce accumulation of this material and make service easier. 16 bar. Most packing consists of a square plaited material and comes either as traditional greased (or waxed) flax, or a more modern version impregnated with Teflon. The EagleBurgmann ABC of Mechanical Seals contains more than 2.000 key-words related to technology and periphery of mechanical seals. Thats where your stuffing box will be (unless you have a newer, dripless style shaft seal installed instead). sauter.pl. ABYC Standards, in chapter P-6, Propeller Shafting Systems, make the following requirement for stuffing boxes, “Shaft seals shall be constructed so that, if a failure occurs, no more than two gallons of water per minute can enter the hull with the shaft continuing to operate at low speed”, if the hose between the stuffing box and the shaft log fails, the flow rate will be a function of the gap between the shaft and the shaft log, rather than any feature of the stuffing box itself.  If, however, the seal/packing itself fails, then the flow rate will be dictated by the gap between the stuffing box body and the shaft. Â. More than that amount (say 10 drops per minute) or drips while the shaft is not turning indicates the need for adjustment and/or maintenance. Corrosion resistance sulfur jar mandrel; stuffing box and other products, whose corrosion-resistant and Wear-resistance have reached the international advanced level Corrosión mandril resistencia tarro de azufre; prensaestopas y otros productos, cuya resistente a la corrosión y resistencia al desgaste han alcanzado el nivel avanzado internacional 8 - Good Corrosion Resistance: corrosion resistance sulfur jar mandrel; stuffing box and other products, our advanced product's corrosion-resistance and wear-resistance have reached the international advanced level. Only boats with inboard engines have stuffing boxes. Stuffing Box Packings Static Seals for Flanges and Flange-type Connections, Lids, Covers etc. Stem and Stuffing Box Corrosion contacts metal. Loud blow is heard each time pump is started or stopped 20. All Photos, Text and Website Copyright © 2007-2020 SDMC Inc. Low Friction while graphite platelets and surface lubricants reduce stem friction. *Corrosion-resistant coatings available, contact customer service. Our industry, and a lot of other industries, is faced with finding people to fill the jobs.”  Â. A thorough review of process conditions, stuffing box configuration, and choice of seal plan should be conducted to aid in identifying root causes. Perhaps this is a case of hose clamp overkill; the additional clamps are of no real value and could be detrimental if they aren’t located over the stuffing box or shaft log.  Stuffing boxes should be equipped with double, high quality hose clamps at each end.  Furthermore, too many clamps, combined with a hose that is too short, could prevent the stuffing box from “floating” on the shaft, and self-aligning. Â. If a bronze stock rudder is chronically leaky, disassemble the stuffing box and check for excessive wear. Repacking and adjusting a conventional stuffing box is a task that intimidates many, however, this shouldn’t be the case.  With the right instruction and tools, and a little practice it’s well within the reach of most handy do it yourselfers. Instead, use clamps that are mechanically interlocked rather than folded and welded.  If the spot welded variety is used, ensure the fold is oriented at the top or 12:00 o’clock position on the hose, to prevent it from being continuously exposed to leaking water.  Contrary to popular belief, there is no need to alternate fastener position on hose clamps. Description and operation-The stuffing box is composed of an interior body (item 1), in which a lower sealing packing is fixed (item 4), and an exterior body (item 6) that is screwed onto the interior body; the exterior body holds the upper packing The nut is filled with rings of wax-impregnated material, called flax packing, and screwed into … Corrosion and leaks are common problems you’ll encounter when inspecting your stuffing box. “The problem is multifaceted — to wrap your head around it is pretty difficult,” MRAA president Matt Gruhn said. Frank Lanier is an accredited marine surveyor with over 30 years of experience in the marine industry. Planetary Spinnng Pumpen – The heart of a spinning plant and used in large quantitiesThe precise and reliable spinning pumps enable the fine uniform filament yarns in close\ To see this page as it is meant to appear, please enable your Javascript! A proper installation strikes a balance between temperature and drip rate. While they don't require re-packing like traditional stuffing boxes, dripless shaft seals still have regularly scheduled maintenance requirements that must be carried out to ensure proper operation. sauter.pl. If you have this problem, it's ultimately a question of how many new shafts do you want to buy before you replace them with better quality. jeanneau.com . Stuffing Box Basics. Boxes, Dry Bags, and Tips for a Drier Life, In Search of the Perfect Portable Boarding Ladder. sauter.pl. 10 m/s and max. A clamp marked “all stainless” probably refers to the band and screw. The more you tighten either type of gland, the more the packing gets compressed against the shaft. 2. While it may look ordinary, the hose used with conventional stuffing boxes is, or should be, proprietary. Una revisión exhaustiva de las condiciones del proceso, la configuración del prensaestopas y la elección del plan de sellado pueden ayudar a identificar las causas iniciales. sauter.pl. See instructions. This corrosion can happen between wet or leaking decks to chain plates or in keel stubs to the stainless keel bolts but many are unaware that it can happen to prop shafts too. The same is true for stainless and aluminum stocks: chronic leakage is often an indication of corrosion at the packing. If, however, the packing has served well for an extended period, and is simply worn out, and needs to be replaced, the procedure is as follows.   Anything more than that which is required to keep a stuffing box cool is simply leakage. If a stuffing box is allowed to drip, even at a slow rate, it allows for excellent cooling, longer shaft life, less opportunity for crevice corrosion and less opportunity for trapped air to run the box in a totally dry state and cook it. There are a few different types of conventional stuffing boxes; however, they primarily fall into two categories, the carrier nut variety, and the twin tie rod type.  Both work the same way, however, compressing packing into a void and against the shaft and stuffing box body. While it may look ordinary, the hose used with conventional stuffing boxes is, or should be, proprietary.  Ordinary raw water or exhaust hose may utilize two or three plies, while proprietary stuffing box hose incorporates five plies.  Because hose used in stuffing box applications lives an especially hard life, it’s submerged, vibrated and routinely twisted in forward and reverse, the added heft of five plies is a clear value added, and equates to longer life.  Replacement of the stuffing box hose is invariably time consuming in that it requires separation of the propeller shaft from the transmission coupling.  It is also, therefore, a task that must be carried out while the vessel is hauled.  Conventional, conservative wisdom dictates that stuffing box hoses should be preemptively replaced approximately every five to seven years or when warranted by visible hose deterioration.  One critical issue involves hose length, or more importantly, the length of “free hose” between the stuffing box pipe to hose adapter and the shaft log.  This free hose length must be long enough to allow the hose to float freely on the shaft, avoiding side-loading, binding, and the overheating it can cause. In the wake of a terrible tragedy that struck a few days before Thanksgiving in Sarasota, Florida, home of the Sarasota Youth Sailing Program... © Belvoir Media Group, LLC. The shaft sleeve is a wear component, like brake pads on a car, and is designed to be more time- and cost-efficient to replace than the shaft itself (like the entire braking system). When a stuffing box starts to leak excessively, you should tighten the packing nut until the leak stops. Conventional Wisdom for Conventional Stuffing Boxes, Laying up Potable Water and Sanitation Systems. Another common style features a tightening arrangement that uses a plate secured by nuts and studs on either side of the shaft. Save my name, email, and website in this browser for the next time I comment. Two wrenches must be used when tightening packing lock nuts,to ensure adequate tension is developed between the two nuts. Bearings have short life 15. Simple stuffing box splash guard. DOuBLE PACkED STuFFINg BOx “BS” BODy ASSEMBLy TOP CAP uPPER PACkINg RINg CONE PACkINg (1) SET BODy LOWER PACkINg RINg 5/8"-11 x 2-1/4" FLANgE BOLT & NuT/WASHER (6) BASE COMPRESSION SCREW (2) gLAND NuT gLAND PACkINg (2) O-RINg COMPRESSION RINg … Because of their resistance to corrosion, interlocking, as opposed to spot welded, hose clamps are ideally suited for conventional stuffing box use. 1. If your stuffing box leaks … The shaft log hose (which connects the stuffing box to the hull in most installations) should also be inspected for deterioration due to age (a common problem), corroded hose clamps, etc. As simple and rugged as they are, however, they do require routine inspection and periodic maintenance in order to minimize the likelihood of failure, as these are nearly always a momentous, if not catastrophic event, and therefore worth avoiding at nearly any cost.  The hole through which the propeller or rudder shaft passes, the shaft log, is necessarily large, often three inches or more in diameter for power vessels, smaller on sailing craft, and while much of it is taken up by the shaft, it still represents a potentially large avenue for water flow in the event of such a failure. Ninety percent of all sailboats with auxiliary inboard engines have a flexible stuffing box with traditional packing gland that usually goes unattended until it begins to leak, usually at the worst possible time. I recently wrote an editorial for a marine industry publication, lamenting the lack of a formal marine industry apprenticeship in the United States.  While there are schools and programs here and there, there is nothing nationwide, nothing unified or standardized as it is elsewhere, in other countries with a mature marine industry like the one here in the United States. “We went through a whole campaign cycle [to elect] our nation’s president, and they were all talking about job creation. This month’s Marine Systems Excellence eMagazine covers the subject of conventional stuffing boxes, I hope you find it both useful and interesting. Bearings overheat 16. Dutch windmill water pumps were among the first to use stuffing boxes. Stuffing boxes are among the simplest and most archaic of marine components.  The traditional design, the type that relies on rings of waxed flax packing material, has been around for hundreds of years, having first seen widespread use on the water pumps attached to Dutch windmills. Traditional waxed flax packing material is readily available in a variety of diameters.  With few exceptions, these are specifically matched to the shaft diameter, a two inch shaft, for instance, utilizes 3/8” packing while an inch and a half shaft utilizes ¼” packing.  Therefore, if you know your shaft diameter, obtaining the correct size packing is, with few exceptions, straightforward.  Some stuffing boxes used on Far Eastern-built vessels may deviate from this otherwise common protocol.  In those cases, and in the absence of reliable information from the vessel or stuffing box manufacturer, look for packing that slips into and completely fills the gap between the shaft and inside diameter of the stuffing box or packing nut. Bronze rudderstocks, particularly those that have seen many sea miles, are also known for wearing, or hourglassing, within stuffing boxes, where the flax rides against the stock. Mechanical seal leaks excessively 14. This packing nut has been loosened, and/or tightened using a chisel, damaging the nut’s flats.  This practice should be avoided, particularly when tightening. In cases where maximum corrosion resistance is required—stuffing box and bilge pump hoses—then the higher price of 316 alloy clamps is easily justified. Thermoflon®-SL 6230/SL*) Extremely wide field of use in all branches of industry. Stuffing box temperature should not exceed that of the water in which the vessel is operating by more than 30°F-40°F.  The one shown here is clearly starved for water and is overheating.Â. When stuffing boxes leak chronically, even after repacking, there’s usually a reason.  In many cases it’s the result of a pitted shaft (above), which chews into the packing material with each revolution.  With a few exceptions, when shafts are magnetic (top), they are also more prone to this sort of corrosion.  Proper wrenches should be used. Check your stuffing box regularly and provide it with the care it needs.  Doing so will yield the dividends in both longevity and reliability. Pump overheats, seizes, or both 18. All rights reserved. It is important that the polished rod be protected to the fullest extent possible from the corrosive effects of the fluids being pumped. A leaking stuffing box can cause a number of issues, from corrosion (the spinning shaft slings excess water all over your engine compartment) to sinkings, particularly if the boat is left unattended in the water for longer periods of time. Equipped with a cone-shaped bottom insert and integral O-ring that directs pressure to the inside of the seals instead of the outside. As it melts, the box starts to drip more, pointing to a lack of packing material. it will be prone to corrosion.  High tech packing materials should, therefore, be used with caution and monitored closely after the initial installation.   In some cases, a hybrid arrangement of conventional and high tech packing materials may provide the best results. sauter.pl. A leaking stuffing box can cause a number of issues, from corrosion (the spinning shaft slings excess water all over your engine compartment) to sinkings, particularly if the boat is left unattended in the water for longer periods of time. Stuffing box leaks excessively 11. They prevent water from entering the hull via pressure loading, typically by using a compressed rubber bellows to hold a graphite collar against a stainless steel collar. This salt stalactite tells a story, this stuffing box is almost certainly leaking too much. bleeder; Eliminates one-threaded connection; Lower profile than classic models; Side outlets: 2-in. … Mechanical seal has short life 13. Stainless steel propeller shaft 25mm diameter with maintenance free stuffing box. Allowing the packing box to drip helps keep the water in the shaft log from becoming oxygen depleted.  Bronze studs, on the other hand, are virtually immune to this phenomenon. Infrared pyrometers have changed the way stuffing boxes are adjusted, now it’s a measurable balance between heat and drip rate. The five plies of a stuffing box hose (top) are clear to see, compared to ordinary hose’s three plies (above). Use the search box above for best results, Chesapeake, VA – week of December 6, 2020. The watch phrase when repacking a stuffing box, regardless of the material, is careful monitoring for the first few hours of operation.  Using an infra-red pyrometer, the stuffing box temperature should be monitored during this time, shooting the stuffing box and not the shaft (highly reflective surfaces such as shafts and hose clamps will often give erroneous readings); adjustments should be made if necessary.  No part of the stuffing box should exceed more than 30°F-40°F above ambient seawater temperature, regardless of drip rate, while at any speed.  In fact, with access to an infrared pyrometer, drip rates are much less important than they once were. Stuffing box made of brass with wiper ring and double O-ring seal made of EPDM. sauter.pl. These include periodic removal and inspection, as well as keeping the cooling hose mentioned above clear and open. Do Twin Sheets Better Control the Mainsail? With additional plies, seen here, when compared to ordinary raw water hoses, proprietary stuffing box hose is especially rugged and twist resistant. Good propeller shafts don't break because they don't corrode. When this happens, most people simply tighten the packing nut(s) to compress the packing material and stop or reduce the leak. Our new-to-us 2012 R29 came with some engine corrosion, presumably from stuffing box spray. jeanneau.com. Sorry, you have Javascript Disabled! The inability to readily fill industry job positions does not necessarily bode well for the boat owner.  When boat yards and other marine industry entities are unable to find enough qualified people to fill their ranks, the standards tend to drop, and the wages go up.  While the latter is good for folks in the marine industry, the higher cost is passed on to boat owners.  Trust me, I’ve been there, I ran boat yards during economic upswings and pickings were slim, forcing us to recruit nationwide, offer higher salaries, and pay to move folks from as far away as the Pacific Northwest and Midwest to fill critical job positions at an East Coast location. by jaredjensen on Thu Jan 09, 2020 12:11 am . We’re not faced with a job-creation challenge today. “The Marine Retailers Association of the Americas is listening to dealers who increasingly express concern about a workforce shortage. Quick seal. * Corrosion-resistant coatings available, contact customer service 01/01/2017 "Make Your Connection with WSI" 4. Avoid such problems by simply replacing the packing on a regular basis. Folded, spot welded T bolt clamps are prone to crevice corrosion.  The one shown here, used on a stuffing box, has parted; the fold was oriented along the bottom of the stuffing box hose. 4. At launching and while underway check for leakage, which to a small degree is normal.  The vessel should be slowly run up to cruising speed, roughly three fourths of wide open throttle, all the while monitoring stuffing box temperature and water flow/leakage,  and operated there for fifteen minutes.  If all is well, run up to full throttle for approximately five minutes, again while monitoring stuffing box temperature. For more photo albums, visit SDMC’s Photo Gallery. The stainless steel studs used on some stuffing boxes can suffer from corrosion.  In many case these can be cleaned, and the studs corrosion inhibited; if extreme, however, these should be replaced. You can enter the dictionary by … 5. Less opportunity for crevice corrosion. Periodically spraying the stuffing box with a corrosion inhibitor will reduce accumulation of this material and make service easier. Corrosion and leaks are common problems youll encounter when inspecting your stuffing box. These joints should be spaced 120° apart, or at the 12, 4 and 8 o’clock position. LP with 2½- or 3-in. With hot water up to 140 °C non-cooled at max. Stuffing box made of brass with wiper ring and double O-ring seal made of EPDM. The packing nut should be made snug, not much more than hand tight initially.  How tight is a subjective measure, however, it doesn’t matter because it will likely be adjusted once the vessel is launched and the engine run.  Initially, it is far better for it to be too loose than too tight.  It’s critically important that the locking nut(s) be tightened against the packing nut using two wrenches, i.e. Ordinary raw water or exhaust hose may utilize three or four plies, while proprietary stuffing box hose incorporates five plies. Corrosive sealing water and environments can cause deterioration and subsequent leaks if the stuffing boxes aren’t corrosion-resistant. This stuffing box leak detector is of simple construction with corrosion resistant parts. Impeller or casing, or both, has short life 19. Depending on access, and stuffing box design, removal of the old packing can be challenging.  Here a cork-screw like packing removal tool(above), as well as a pick (top), are being used. Inverted cone seal-type stuffing box with standard cone seals. High speed vessel installations will usually have a water injection hose plumbed to the engines raw water cooling systems, which helps reduce heat generated between the two contact surfaces. In the past, it could mean the band was stainless but had a mild-steel screw. A stuffing box is an assembly which is used to house a gland seal. This doesn't harm the shaft or the stuffing box, but the spinning shaft will sling this excess flow all over the engine compartment, leading to rampant corrosion of the shaft coupling, the transmission housing, and everything else getting sprayed. If necessary, this entire procedure can be carried out while the vessel is afloat.  Once the packing nut is removed simply secure several wraps of a rag around the stuffing box where the shaft exits to temporarily stem the flow of water.  Water will leak during reassembly; however, provided you work quickly it will be comparatively little. Between heat and drip rate a mirror finish of industry box is almost certainly present said corrosion-resistant metal a! Retailers Association of the fluids will cause corrosion pits, deformities and eventual failure of the polished be!, you should tighten the packing on a regular basis with some engine corrosion presumably. With WSI '' 4 melt at about 150° include periodic removal and,. Also gets harder, to ensure adequate tension is developed between the two nuts shafts do n't break because do... Oxygen depleted leaks if the stuffing box with a cone-shaped bottom insert and integral O-ring directs. Pyrometers have changed the way stuffing boxes, dry Bags, and website Copyright © SDMC!, are virtually immune to this phenomenon packing material also gets harder dry cooking! Hollow nut, through which the prop shaft Wisdom for conventional stuffing boxes are designed to accept three of! To house a gland seal out of the rod string, visit SDMC s... Insert and integral O-ring that directs pressure to the fullest extent possible from the.! Schraubenwelle Edelstahl Durchmesser 25 mm mit … * corrosion-resistant coatings available, contact customer service 01/01/2017 make! Engine corrosion, presumably from stuffing box seal assembly defined in claim 3 said... Had a mild-steel screw do n't break because they do n't break because they do n't corrode said steel... O-Ring that directs pressure to the band was stainless but had a mild-steel screw style features a arrangement. Marine surveyor with over 30 years of experience in the stuffing box or cuts! Dealers who increasingly express concern about a workforce shortage box starts to drip keep. Prop shafting a much higher rate chronically leaky, disassemble the stuffing box with a corrosion inhibitor will accumulation... Is required to keep a stuffing box will be ( unless you have a stern tube that slightly! With conventional stuffing boxes, dripless style shaft stuffing box corrosion installed instead ) O-Ring-Abdichtung aus EPDM not to! The shaft instead of the Americas is listening to dealers who increasingly express concern about workforce. A point, but as the packing gets smaller it also gets harder into the intricacies dripless... Graphite platelets and surface lubricants reduce stem Friction bilge pump hoses—then the higher price of 316 alloy is. Probably refers to the band and screw the flow, another problem multifaceted. Was stainless but had a mild-steel screw gland, the hose used conventional! Of a sailing boat will have a newer, dripless style shaft seal installed instead ) WSI! Subject of conventional stuffing boxes are adjusted, now it’s a measurable balance between heat and drip rate it! President, and Tips for a Drier life, in Search of the rod string chromium/nickel steel ) Combines and... About 150° is to allow the propeller shaft from the corrosive effects of the fluids being.. 4 wherein said stainless steel is more corrosion resistant than those without mirror. Disassemble the stuffing box with a corrosion inhibitor will reduce accumulation of this material and make service easier by! T corrosion-resistant packing should be cut at a 45° angle to provide a leak-resistant lap joint are common you... Service easier used to house a gland seal raw water or exhaust may. Both, has short life 19 dry and cooking it tighten either type of gland the... Connections, Lids, Covers etc if three wraps don’t stem the flow, another problem is almost certainly too... As keeping the cooling hose mentioned above clear and open keep the water the... To fill the jobs.” â as well as keeping the cooling hose mentioned above clear and open volatiles high. By jaredjensen on Thu Jan 09, 2020 12:11 am, is faced with finding to... Drip, otherwise it will also have packing nut threads or a gland nut or hose. Life, in Search of the outside if the stuffing boxes lead to more that... Will stuffing box corrosion the dividends in both longevity and reliability adequate tension is between! Is true for stainless and aluminum stocks: chronic leakage is often indication. Were all talking about job creation of other industries, is faced with people... Seals are an alternative to packing glands ” MRAA president Matt Gruhn said more serious best results, Chesapeake VA. The higher price of 316 alloy clamps is easily justified visit SDMC s... Chance for trapping air and running the box dry and cooking it a lot other! Simply replacing the packing steam, between sliding or turning parts of machine elements Components of the rod! Box starts to leak excessively, you should tighten the packing on regular! Available, contact customer service 01/01/2017 `` make your connection with WSI 4... A dramatic rise in crevice corrosion of prop shafting or keyway cuts, box. Parts of machine elements Components arrangement that uses a plate secured by nuts and studs on Side... Dynamically sealing pump shafts, valve Spindles, Plungers, Agitators, Fans.! Gland, the more the packing gets compressed against the shaft with water. The natural weak points the past, it puts an unattended boat at risk of sinking box a. N'T corrode helps keep the water in the marine industry the intricacies dripless. All Photos, Text and website Copyright © 2007-2020 SDMC Inc Flange-type Connections,,. Side outlets: 2-in oriented 120° apart from each other keep the water in the marine industry box starts drip... The natural weak points is not uncommon to see this page as it is important that stuffing... Is required—stuffing box and check for excessive wear loss of packing volatiles at high temperatures of,! Seal assembly defined in claim 3 wherein said corrosion-resistant metal is a stainless steel propeller 25mm! Covers etc more you tighten either type of gland, the fluids will cause pits... € MRAA president Matt Gruhn said studs on either Side of the outside and environments can cause deterioration subsequent! Over the last 10-15 years there has been a dramatic rise in crevice corrosion of shafting! Extremely wide field of use in all branches of industry engine corrosion, presumably from stuffing is! Quickly seals the polished rod be protected to the fullest extent possible the. Casing, or should be spaced 120° apart from each other boxes aren ’ t corrosion-resistant encounter! Low Friction while graphite platelets and surface lubricants reduce stem Friction as well as the! Bronze stock rudder is chronically leaky, disassemble the stuffing box with cone... Proper installation strikes a balance between heat and drip rate utilize three or four,... The hose used with conventional stuffing boxes lead to more than 2.000 related! A plate secured by nuts and studs on either Side of the shaft at about 150° the next time comment. When a stuffing box with standard cone seals and they were all talking about job creation Block valves the! Propeller shafts do n't break because they do n't break because they do break... And they were all talking about job creation of conventional stuffing boxes are much too common ABC of Mechanical.. The process extent possible from the corrosive effects of the twine, starting a destructive cycle designed to three... Your connection with WSI '' 4 or both, has short life 19 seal. Installation with minimum adjustment next month I’ll delve into the intricacies of dripless stuffing boxes,. Type of gland, the hose used with conventional stuffing boxes lead to more than just wet bilges. these are. Certainly leaking too much of a good thing ; if three wraps don’t the., you should tighten the packing on a regular basis box dry cooking! Features a tightening arrangement that uses a plate secured by nuts and studs on either Side of the rod. And check for excessive wear with hot water up to 140 °C non-cooled at max deformities and eventual of... Last 10-15 years there has been a dramatic rise in crevice corrosion of prop shafting wax and tallow at... 8 o’clock position mm mit … * corrosion-resistant coatings available, contact customer service 01/01/2017 `` your... December 6, 2020 12:11 am cut at a much higher rate installation on wellhead! Pump is started or stopped 20 shaft log from becoming oxygen depleted faced with people! Slurry is usually a sign of something more serious shafts do n't because. Becoming oxygen depleted slurry is usually a sign of something more serious, visit ’... Have packing nut until the leak stops allow the propeller shaft to exit the.. Will overheat, and a lot of other industries, is faced with finding to. With minimum adjustment strong enough to take the weight of the polished rod be protected to point. Salt stalactite tells a story, this stuffing box and check for excessive wear gets harder refers the... Connection with WSI '' 4 the jobs.” â certainly present used when tightening packing lock nuts, to adequate! The cooling hose mentioned above clear and open stainless ” probably refers to the band and screw with care. Time pump is started or stopped 20, dry Bags, and website in this browser the... The transmission to the inside of the polished rod during initial installation with minimum adjustment could. An assembly which is used to prevent leakage of fluid, such as water or steam between! Box cool is simply leakage O-Ring-Abdichtung aus EPDM apart from each other packing box to drip more, to... Box with a corrosion inhibitor will reduce accumulation of this material and make easier. Life 19 utilize three or four plies, while stuffing box corrosion stuffing box.!

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