From 593.08 . Wrtsil Enviroguard MB is an inboard, closed water lubricated "omega" bellows, face type seal assembly. 1 Typical stuffing box arrangement (ITT Goulds Pump) There are three types of stern tube bearing arrangements that are used to accomplish these goals: 1. packing is lubricated from inboard side by a "zerk" fitting Shaft sizes from 2-1/2" to 7-3/4" (63.5mm to 196.85mm) Technical Specifications The Dutchman Add-On Air Seal Housing Allows You To Change Packing Without Drydocking. The easy way to do this is to wrap the packing around the shaft in some accessible location and cut across the overlap with a razor knife. Mechanical Seals . The liquid is circulated in a circulation system through a separating tank. The shape, size and number of lip seals depends on the size and type of application. The Type A PSS Shaft Seal is a mechanical face seal. A hydraulic jack is placed on the Stern Frame Skeg at same point over a Keel Block so that the Skeg is supported. A stern tube sealing device comprising: 2. Mechanical Seal Type: Double. Stuffing boxes, which uses packing material to seal the area 2. At the inner end of the stern tube there is a stuffing box containing the packing gland (figure 4-4), which is generally referred to as the stern tube gland. Water or Grease Lubricated. Ship Spare Parts: Stern Keeper SKC-480 Stern Tube Seal - HP2282-054-016/28 - SEALING RING, - HP2282-054-016/36 - GASKET, - S07X025A . Screw the anchor pin to the inflatable ring. Gate Valve Packing Stern Tube Packing Carbon Graphite Gland . This is better than replacing a $1,000 + propeller shaft! The third type of stern tube seal is radial seal. Since stern tube seals of a radial lip type formd of resilient material have come to be used in general ships, the pressure applied to the seal rings have increased due to the tendency toward the use of large ships with resultant increase in the draft pressure. Ship Spare Parts: Wartsila STERN TUBE Stern Tube Sealing . Once the flax packing wears down, it's time to replace it. The sealing surface is created between the flat surfaces of the rotating stainless-steel rotor and the stationary carbon flange. Stern Tube Gland Packing 5/16 (7.9 mm) 8 Meter Box. Each stuffing box fits a particular shaft diameter and stern tube measurement. 2" to 15" Diameter Shafts. Simplex sterntube seals. c. Fix the infla retainer on the casing. A stuffing boxalso called a stuffing gland, packing gland or packing boxforms a seal between the prop shaft and the hole in the hull through which the shaft passes while allowing the shaft to turn freely. In case of the replacement of a seal ring, also replace the garter spring at the same time. $ 248.00 $ 240.00. Conventional Stern Gear. China Shaft Bush for YH3-220 Stern Tube Seal: Stern Tube Seal Parts. STERN TUBE SEAL BIO SEAL Wartsila 0 Contact us if you are looking for STERN TUBE SEAL BIO SEAL 0 or other marine equipment and ship spare parts from this manufacturer Wartsila. Certified by ABS, BV (or Bureau Veritas), RINA, and US Coast Guard approved. Material: SS316 and Rubber. The stern tube seals come in a variety of types, which include basic type CX, type DX containing a spare seal, pollution-free type AX, and type EVA combined with an end-face seal. Boatbuilders and boat yards recognize the advantages and value of installing the PSS as it eliminates the maintenance, constant adjustment, and cost associated with a traditional type of packing glands. 3. Tamp it evenly with a small dowel or a blunt screwdriver to push it all the way to the bottom of the box. Various materials are used for the packing, traditionally flax, hemp and cotton, but more modern materials include graphite, acrylonitrile and Kevlar. [2] Creating a proper plunger alignment is critical for correct flow and a long wear life. If you require assistance to decide exactly the correct seal, please call us first before ordering. Engines and Drives Spare Parts - All Makes. Installation of Stuffing Box Packing. Our seals are designed for oil-lubricated propeller shaft bearings and must achieve two important things: prevent the leakage of oil into the engine room or water and keep water out of the stern tube. Crane Packing Limited: Stern seals for ships GB1575919A (en) * 1976-12-20: 1980 . The stuffing box is flanged and bolted to the stern tube. From small elastomer bellows seals used in millions of domestic water pumps to double mechanical seals that ensure maximum sealing safety and large, highly customized dry-running gas seals for mission critical high speed turbo compressors, John Crane has the right product for any application. As such . Routine maintenance means less trouble at sea and a more enjoyable day out or long holiday afloat. There are a number of manufacturers of dripless shaft seals and a variety of designs. Technical Specification SM/SMB Water Lubricated Stern Shaft Sealing Stern Shaft Sealing Photo 1 Some small boats and crafts use surrounding seawater for cooling and a greased bearing for lubrication. A stern tube is just a piece of pipe around a prop shaft, with bearings to keep the shaft centered and a provision to keep the water out. A gland nut or packing nut threads onto the stern tube. Strongly recommended for use particularly in marine applications such as stern tubes . Stern Tube Gland Packing 3/8 (9.5 mm) 8 Meter Box Style SS2301 $ 258.00 $ 242.00 Add to cart Sale! Face-type seals . The packing is wrapped around the shaft and inserted into the gland nut. Used to provide a frequent supply of grease to the stuffing box/stern gland to keep the seal watertight and reduce wear on the propeller shaft . Certified by Bureau Veritas, ABS & Rina. Sterntube is the watertight tube enclosing and supporting the propeller shaft. Simplex sterntube seals Simplex sterntube seals Prevent ingress of water and avoid lubricating oil leakage Ineffective marine seals can be prone to water ingress that can be damaging to the system as it causes less lubricity and more corrosion. If you need help in sizing a shaft seal, call us on 01326 370060. Extremely resilient and ductile, will not stain or score the shaft. A metal cylinder filled with water-resistant grease fitted close to the stern tube on a narrowboat. Through tightening it onto the stern tube, the packing is compressed, creating a seal against the shaft. Packing Type Common Stern Tube Seal Types Labyrinth Seals The general working principle of Labyrinth seals is to create a series of barriers that gradually reduce pressure such that the final seal is not subject to a large volume of sealing media at these higher pressures. When the axial vibration <=+/-3mm, and Speed is High SMB Type can be sued. Gland packing must be regularly lubricated with quality water resistant grease, such as Morris grease. Pump Packing Suitable for stern tube and paper mill packing Graphite-free packing Square braid construction 329 Ordering Information Size Packaged 10% Item mm Inch kg lbs Number 6.4 1/4 2.270 5 032973 8.0 5/16 2.270 5 032974 9.5 3/8 2.270 5 032975 4.540 10 032981 11.0 7/16 2.270 5 032977 12.7 1/2 2.270 5 032979 4.540 10 032983 NOK's stern tube seals are approved by the classification societies of various countries. A wood shoe is placed between the jack and the Propeller Boss. The PSS Shaft Seal can be easily retrofitted and is available for shafts ranging from 3/4" (20mm) to 8" (205mm). Clean the stuffing box and shaft thoroughly. 4. Sterntube seals have to perform two separate functions, one is to ensure that water does not enter the engine room, the second one to allow the propeller shaft to rotate as smoothly and freely as possible. It still provides the most reliable and cost effective sealing solution for shaft diameters from 80 mm to more than 1 metre irrespective of whether your vessel has a water or an oil . Replacing the Packing. A primary set screw and a backup set screw (2 sets) are used to secure the stainless steel rotor to the shaft. Aside from these benefits, the PSS Shaft Seal helps to eliminate water in the bilge ( 100% water tight) & wear to the propeller shaft. It consists of a threaded sleeve and a hollow nut, through which the prop shaft passes. In addition, use a reinforced neoprene gasket that is 1/16" to 1/8" thick between the flanges to prevent leakage. All types of Stern Bearing: 1. This type of shaft seal relies upon compression of a packing material around the shaft. SKU: SSS7.9Box8Meters Categories: Expanded PTFE Joint Sealant, Gland & Stuffing Box Packing Tags: marine gland packing, marine stern packing, stern gland packing, stern tube packing, stern tubes gland packing, sternglands, Stuffing Box Packing. 1. The seals features a rotating seat assembly and a stationary face carrier. Lantern ring 3. 2. Inside the gland nut is the packing, which creates the seal. Tighten the hose clamps to secure the bellow to the stern tube and fit the black clamp protector to the tail of the hose clamps. 12 - SHEET PACKING, 13 - SEAL RING WITH SPRING,SIZE#600, 14 - SEAL RING WITH SPRING,SIZE#600, 17 - TOOTHED LOCK WASHER, 20 - HEX.SOCKET PLUG, The wax and tallow provide lubrication so that the twine can be compressed against the shaft without abrading the metal. PSS Seal PRICE FROM 180.36. It can be press-fitted or installed with epoxy resin. 6. A housing with series of seal rings clamped into position on the bush. The propeller, located outside the ship, needs to be connected to the engine inside the ship's engine room. Making it yourself is easy if you have the proper tools, almost impossible if you don't. Another approach is to use something else and adapt it for your purposes, like an old electric garden pump. For more information of the product, click the link below. China JMT lip stern tube seal products offered by Xingtai Top-Team Import And Export Trade CO.,Ltd, find more JMT lip stern tube seal suppliers & manufacturers on Hisupplier.com . For more than 70 years, the Simplex sterntube seal has led the way in protecting your vessel from water ingress as well as leakages. Remove old packing from stuffing box (if replacing packing). Type: STERN TUBE Component: Stern Tube Sealing Maker: Wartsila. The stern tube gland seals the area between the shaft and stern tube but allows the shaft to rotate. Shaft Diameter: 1.77 to 54.02. Lip seals are seals made of special kind of materials (elastic) , having a projecting lip or edge. This material consists of braided twine impregnated with wax and tallow. The average 1.5" shaft stern gland would cost between $15 to $25 depending on the packing type used. 2. from Federal-Mogul Powertrain. PSS Type A Maintenance Kit, PYI Inc 12 34 offers from $19.76 PSS PRO Shaft Seal, PYI Inc 7 The stationary carbon flange is attached to the front side of the bellow with hose clamps, and the back end of the bellow fits over the Stern tube and is secured . 2.Inflatable ring This might be used for about 5 years, but it is recommended to replace at the shaft withdrawal. . Forward Stern Tube: Fwd Stern Tube, Rudder, Bulkhead: Forward Stern Tube: Face / Mechanical Type Seal: Packing Type Seal: Axial Shaft Seal: 3/4" to 7" Diameter Shafts. Packing: in the carton or as your requirement Delivery Date: within 30 days after the order; JMT lip stern tube seal 1.Material:Viton 2.Type:JMT lip seal 3 . STERN TUBE A stern tube is a hollow tube that runs through the bottom of the ship from the main engine to the propeller. The stern tube, as the name suggests, is a hollow tube-like structure at the stern or rear part of the ship. Rings of soft packing material are placed in the stuffing box around the shaft. Shaft Sleeve for SM 350 Type Water Lubrication Tube Seal. . The annular chamber is filled with a liquid for lubricating the sealing elements. Vegetable fibers (Ramie) packing braided in the High Controlled Density (HCD) method, deeply impregnated with large quantity of PTFE suspensoid and an inert syntetic lubricant. What is a Stern Tube? The Pss Shaft Seal Can Be Easily Retrofitted And Is Available For Shafts Ranging From 3/4" To 6" (20Mm To 150Mm). Applying a shut down seal eliminates costly and time-consuming dry-docking. Be sure to remove any silt, sand, metal filings and other grit that may cause shaft wear . When the gland nuts are tightened up on the stuffing box the packing forms a . 4. Packing rings 2. d. Tighten the lock nut in the anchor pin. Stern Tube Gland Packing 5/16 (7.9 mm) 8 Meter Box $ 248.00 $ 240.00 Add to cart Mechanical Seals for: Centrifugal Pumps Slurry Pumps Submersible Pumps Mixers & Agitators Suitable for kinds of vessel whose working medium is water. Dripless Shaft Seals - How They Work. Aside from these benefits, the PSS Shaft Seal helps to eliminate water in the bilge (100% watertight) and wear to the propeller shaft. In the fields of operation and control of hydraulic and pneumatic equipment, in particular, NOK Packings are dramatically growing in performance. Boat builders and boat yards recognize the advantages and value of installing the PSS as it eliminates the maintenance, constant adjustment & cost associated with traditional packing type glands. Seal Application: Pump; Marine Stern Tube; Various. A ship needs a propeller to drive it forward against the waves. A face-type seal with a uniquely shaped sealing ring made of rubber was developed and has been applied to various vessels instead of the conventional gland packing system. Before oil lubricated stern tubes were the norm, ships were equipped with water lubricated stern tubes. 3. 1. Add an oil leakage into the mix and you could face considerable maintenance costs and unplanned downtime. The scope of our mechanical seal product range far exceeds any other seal manufacturer. 5 in stock. The shaft is wrapped by the packing and put in the gland nut. The packing hardens and can eventually do damage by wearing a slight groove in the shaft making it impossible to for a seal. Curl one of your cut lengths into a ring around the shaft and push it into the stuffing box. Leak-Tightness Oil Lubrication Type Stern Shaft Seal . These stern tubes had a bearing made with lignum vitae, a very hard and dense wood from South America. Fit a Dial Gauge on the Rope Guard or Sterntube Nut so that the Gauge spindle is vertical and touching the Propeller Boss. Packing gland 4. Style 1029. The sterntube is installed from aft and bolted to the stern frame boss. These shaft seals are dripless, and rely on the principles of a mechanical face seal. info@shipcareplus.com Name: STERN TUBE SEAL BIO SEAL Added on October 24, 2019 More Information Find additional warranty information Return Policy Ideal replacement for packing glands and lip seals in marine or industrial environments Highly durable, low maintenance and cost-effective solution. MFG SKU NSN Item Name Details CAGE Code RFQ; 30.750 TYPE MX9 30750TYPEMX9: 2040-01-345-1487: Seal Assembly, Shaft log, Ship: III End Item Identification: Stern tube seal assy General Characteristics Item Description: Seawater service;ambient temp 28 to 95 deg f;pressure 9 psig;rev/min 143.5: 71724 !. This type of seal is split in two to make it easier to install, inspect and maintain. Its casing is divided into . View Cart. 2. A stern tube bearing for vessels is sealed off in a leakproof aft seal asbly which comprises at least one annular chamber between axially spaced sealing elements. When the axial vibration <=1mm, SM Type can be sued. Shaft Bush, Rubber Ring with Spring and O ring. It consists of a cast-iron or casted steel cylinder fitted with bearing surface within which the propeller shaft, enclosed in a sleeve, rotates. Stern Tube Seal Model:YH3-220. This rotor is attached to the shaft. We sell a couple of gland packing materials, PTFE flax and graphite cotton gland packing, on an 8 metre roll or per metre for maintenance. Add to cart. . Home. The SIMPLAN seal is the result of 50 years of sterntube sealing experience and innovative combination of state-of-the-art materials: available for shaft diameters from 2 to 13 (50-320mm). Manufactured in the USA. Simplex stern tube seals comply with industry classification requirements and are type-approved by all major classification societies. Two nitrile o-rings seal the stainless steel rotor to the shaft and will not experience wear. Packing is normally square in section and comes in a variety of dimensions. 3. To Properly Size Your Shaft Seal, Measure The Diameter Of The Shaft And The Outside Diameter Of Your Shaft Log/Stern Tube. Most of the units use what's called a face-type seal, with flexible bellows attached to the stern tube (or stuffing box collar) that presses a fixed carbon/graphite flange against a rotating stainless-steel rotor which spins with the prop shaft, creating a seal . However, heavy wear and leakage problems 011 sliding surfaces were observed 011 some boats operated in brown water. The Dutchman can be custom-built and added to any split design or solid stuffing box. The Wrtsil Enviroguard M4 is an outboard, closed water lubricated stern tube seal. You'll need some wax-impregnated fax packing, which comes in rolls or strips and is square in cross section. The description/sizes may be different with goods, please check with us when order. Depending on the vessel type, lubrication for the stern tube seals, stern tube, and strut bearings is accomplished by seawater, freshwater, or oil. Square Bore Face Seal, 76.95 -- Brand: Goetze. SKC-480 Stern Tube Seal Stern Keeper Genuine & OEM spare parts and ship equipment made in Japan, Korea, China, and Europe. Type 4600 water-lubricated stern tube seals are virtually leak-free and are leaving no oil or grease residues in the waterway. Stern gland greaser is a vital component on a narrowboat to keep water our of the engine bilge. Boat builders and Ship yards recognize the advantages and value of installing the PSS as it eliminates the maintenance, constant adjustment & cost associated with traditional packing type glands. Mechanical face seal type 76.95H modifies 75.95 seals for the prevention of axial displacement caused by dirt . Packing Industrial equipment is currently facing new innovations, such as remarkably developing mechatronics engineering and significantly advancing plant automation. Maintenance and repairs can be performed with vessel afloat. As we tweaked the engine mounts, we found another clue to the cause of the original tube break. Water Lubricated: With or Without Emergency Air Seal: With or Without . The packing is inside the gland nut and creates the seal. With the new Cutless bearing inserted into one end of the tube, a shiny new PSS dripless seal mounted on the other end, the shaft mounted to the transmission, and the tube in place, a friend and I aligned the whole assembly with the engine and hull. The primary parts of the installation are: 1. The traditional stuffing box consists of stern tube which is slightly larger than the prop shaft. Volvo Penta Stern Glands Propeller Glands Rubber Stuffing Box Sealing Sleeve This is the moulded packing or stuffing box for the prop shaft. This peculiar shaped ring is held in close contact with the shaft and the stern tube to prevent oil leakage or water entry. . Oil lubricated sterntube requires two types of seals, one water/oil . Shaft Diameter 2" inch 3819728 for stern tube diameter of 2 3/4" 2.75 inch Shaft Diameter 25MM 828254 stern tube diameter of 42mm ; material is collected in the oil filter of stern tube oil lubricated systems. The PSS (Packless Sealing System) shaft seal is a mechanical face seal, which uses the seal created between the flat surfaces of the rotating stainless steel rotor and the stationary carbon flange. stern tube seal manufacturers/supplier, China stern tube seal manufacturer & factory list, find best price in Chinese stern tube seal manufacturers, suppliers, factories, exporters & wholesalers quickly on Made-in-China.com. Please note, the number on the rubber . At this time, be careful not to twist the anchor pin by fixing the square part of the pin with a wrench. Packingless Shaft Seals (PSS) Packingless Shaft Seals (PSS) are the successor to the stuffing box. Exhaustive testing procedures a the highest quality control standards ensure the best quality product at the best possible price. Genuine & OEM spare parts made in China, Korea, Japan and Europe for Maritime, Oil & Gas Industry. (D) Stern tube sizes: 51mm, 54mm, 60mm, 63.5mm, 70mm, 76.1mm . Home / Shop / Products tagged "stern tube packing" Showing all 2 results Sale! Stuffing box bushing Compression Packing to Form Seals for Rotating Shafts, Fig. In addition, the stern tube is the only piece that connects propellers to the ship. cuff too far down and over the stern tube. e. Tighten another lock nut in the anchor pin. A thin lm of water sits between the stationary carbon or ceramic ange and the stainless-steel rotor. A stern tube sealing device as defined in claim 1 wherein an annular space is formed radially outwardly of said peripheral portion of each seal ring when said portion is inserted, but not clamped between said annular casing and its associated retaining ring; and 3. . Seal Design: Mechanical Face Seal. These consist of a Stuffing box, central tube (also called the centre bearing) are used around the propeller shaft at the point where the boat's hull is underwater. Drive Force PTFE flax gland packing rope is ideal for packing out shaft bearings and glands. [email protected] Type: SKC-480 Component: Stern Tube Seal Maker: Stern Keeper. Lip seals, which are connected to the tail shaft to prevent lubricant or water from passing through the shaft 3. A seal is created between the two flat surfaces of the carbon stator and the stainless steel rotor. The ship's tail shaft or propeller shaft, which transfers power from the main engine, runs inside the stern tube and connects to the propeller. Interface contact is maintained by spring pressure from the flexible . 3 1/2" to 36" Diameter Shaft: Water Lubricated. Its width measures 1/8 to . Packing materials may be impregnated with grease or PTFE lubricants. Packing is installed into what is referred to as a stuffing box. Category:Stern Tube Seal Material:Stainless Steel Packing Details:Wooden Box Delivery Time:5 Days Fob Price:Get Latest Price Now Place of Origin:China Replacing the packing isnt a hard job , and its not expensive either . Install the gasket to mounting surface of the casing. It has been very successful in service in blue water. Stuffing boxes are stocked in all sizes for immediate dispatch. 1.Seal ring The seal life might be considered approximately 24 years, but a little shorter in vessels with a deeper draft. If the bellow is slid too far onto the stern tube the forward edge of the stern tube could damage the inner ribs of the bellow and improperly limit the bellow's travel. The head of the circulated liquid is lower than the head of a lubricant in . A typical installation for a pump is shown in Fig. Water Lubricated Stern Shaft Sealing Advantage 1. (2)Casing a.
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