{"title":"Marine Hardware - Shaft Seals","description":"\u003cp\u003eShop Shaft Seals for Marine Hardware at Tug \u0026amp; Tow. Find shaft seals plus related marine hardware products, parts, and accessories for boating, trailering, RV, fishing, camping, maintenance, and outdoor projects.\u003c\/p\u003e","products":[{"product_id":"pss-shaft-seal-2-1-2-shaft-4-tube-02-212-400","title":"PYI PSS Type A Shaft Seal, 2-1\/2\" Shaft \/ 4\" Tube – ABS Certified","description":"\u003cp\u003e\u003cstrong\u003eUpgrade your vessel's propulsion system\u003c\/strong\u003e with the PYI PSS Type A Shaft Seal, the world's leading marine mechanical seal designed to deliver a 100% watertight seal and eliminate propeller shaft wear. This dripless solution is engineered for 2-1\/2\" shafts and 4\" stern tubes, significantly reducing bilge water and maintenance associated with traditional packing glands. Proudly manufactured in the USA and trusted by top boat builders globally, it is certified by Bureau Veritas, ABS, RINA, and US Coast Guard approved, ensuring unparalleled reliability and performance. Invest in superior marine engineering for peace of mind on every voyage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDripless Operation:\u003c\/strong\u003e Provides a 100% watertight seal, effectively eliminating bilge water and protecting your vessel's interior.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Maintenance:\u003c\/strong\u003e Replaces traditional packing glands, eliminating the need for constant adjustment and preventing wear to the propeller shaft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Construction:\u003c\/strong\u003e Features a rotating 316L stainless steel rotor and a stationary high-density, resin-impregnated carbon graphite flange.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMisalignment \u0026amp; Vibration Compensation:\u003c\/strong\u003e The carbon flange is bored larger than the shaft diameter, allowing it to \"float\" and compensate for most shaft misalignment and vibration issues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Designed for 2-1\/2\" shaft diameters and 4\" stern tube diameters, with the PSS system available for a wide range of shaft sizes from 3\/4\" (20mm) to 6\" (150mm).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Thermal Resistance:\u003c\/strong\u003e The carbon flange has an operating temperature exceeding 500°F (260°C), preventing melting even if the seal runs dry. The Nitrile rubber bellows have a temperature rating of -25°F to +225°F (-31°C to +107°C).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Bellows:\u003c\/strong\u003e Constructed from molded Nitrile rubber, known for its resistance to weathering, oils, non-polar solvents, and good abrasion resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpressive Performance Limits:\u003c\/strong\u003e Capable of handling pressure limits up to 15 PSI (1 BAR) and shaft RPMs up to 10,000 RPM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertified Quality:\u003c\/strong\u003e Approved by leading maritime classification societies including Bureau Veritas, ABS, and RINA, along with US Coast Guard approval.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimal Dimensions:\u003c\/strong\u003e Uncompressed total length of 9.625\" (compressed length of 8.375\"), rotor diameter of 4.2\", carbon cuff diameter of 3.75\", and stern cuff length of 2\".\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eMaintenance Recommendation:\u003c\/strong\u003e For optimal performance, the PSS bellows should be inspected regularly and replaced every six years. During bellows replacement, it is also recommended to replace the O-rings, set screws, and hose clamps.\u003c\/p\u003e","brand":"PSS Shaft Seal","offers":[{"title":"Default Title","offer_id":39369606037579,"sku":"CT-103176","price":724.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0287\/3235\/8731\/products\/50874XL.jpg?v=1621696273"},{"product_id":"pss-pro-shaft-seal-1-3-4-shaft-3-tube","title":"PSS PRO Shaft Seal 1-3\/4\" Shaft \u0026 3\" Tube","description":"\u003cp\u003e\u003cstrong\u003ePRO Shaft Seal 1-3\/4\" Shaft \u0026amp; 3\" Tube\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe PSS PRO Shaft Seal is a mechanical face seal utilizing our proven stainless steel and carbon sealing components but adds reinforced silicone bellows, a secondary shaft retention collar, 316 Stainless Steel hose clamps (rolled edges and non-perforated), and an optional Nitronic 50 rotor upgrade (for highly corrosive environments). Designed specifically for applications that will require increased durability and resistance to harsh, corrosive, high pressure, and otherwise demanding environments. The PSS PRO Shaft Seal is a specialized mechanical seal suitable for various applications, with unmatched performance.\u003cbr\u003e\u003cbr\u003eAs with PSS Type A \u0026amp; B Seals, The PRO Shaft Seal is a mechanical face seal. The sealing surface is created between the flat surfaces of the rotating stainless-steel rotor and the stationary carbon flange. The stationary carbon flange is attached to a heavy-duty silicone bellows attached to the vessel’s stern tube (shaft log), with 316SS hose clamps. The stainless-steel rotor is fitted on the shaft in front of the carbon flange and is used to compress the bellows, the rotor is then secured to the shaft with set screws, and the shaft retention collar is installed. This compression (pre-load) maintains constant contact between the two mating faces of the stainless-steel rotor and carbon flange, allowing the PSS to compensate for the variable axial movement due to propeller thrust. In addition, the carbon flange is over-bored to the shaft diameter allowing it to \"float\" around the shaft and thus compensate for most misalignment and vibration from the drive-line. The stainless-steel rotor is sealed to the shaft by two O-rings recessed into the rotor's bore. These O-rings rotate with the shaft and the stainless-steel rotor and therefore do not experience wear during operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTemperature Limits: -13°F to 425°F (-25°C to 220°C)\u003c\/li\u003e\n\u003cli\u003ePressure Limits: 40 PSI (2.75 BAR)\u003c\/li\u003e\n\u003cli\u003eShaft RPM Limits: 10,000 RPM\u003c\/li\u003e\n\u003cli\u003eCarbon Graphite: Lapped to 4 HLB (0.000044\" tolerance)\u003c\/li\u003e\n\u003cli\u003e316SS \/ Nitronic 50: Faced to 9 Ra\u003c\/li\u003e\n\u003cli\u003eBellow Material: Molded formed silicone \/ fabric\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eShaft Dia. (A) 1-3\/4\"\u003c\/li\u003e\n\u003cli\u003eStern Tube Dia. (B) 3\" to 3-1\/8\"\u003c\/li\u003e\n\u003cli\u003eUncompressed Length (C) 9.268\" \u003c\/li\u003e\n\u003cli\u003eApprox. Compressed Length 8.268\" \u003c\/li\u003e\n\u003cli\u003eRotor Diameter (D) 3.75\"\u003c\/li\u003e\n\u003cli\u003eStern Cuff Length (E) 1.3\"\u003c\/li\u003e\n\u003c\/ul\u003e \u003c!--- cis2:m2hqmJRp ---\u003e","brand":"PSS Shaft Seal","offers":[{"title":"Default Title","offer_id":53306668253502,"sku":"CT-117555","price":629.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0287\/3235\/8731\/files\/86665XL.jpg?v=1779140334"},{"product_id":"pss-shaft-seal-2-shaft-3-tube","title":"PSS Shaft Seal, 2\" Shaft x 3-1\/4\" Tube, Marine Certified","description":"\u003cp\u003e\u003cstrong\u003eEnsure your vessel's propeller shaft stays protected and dry\u003c\/strong\u003e with the PSS Shaft Seal, the #1 selling marine mechanical seal worldwide. Certified by Bureau Veritas, ABS, and RINA, this advanced seal eliminates the need for traditional packing glands, preventing bilge water and shaft wear while compensating for misalignment and vibration. Upgrade your vessel's reliability today.\u003c\/p\u003e\nSpecifications:\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Diameter:\u003c\/strong\u003e 2\" - Accommodates a precise 2-inch propeller shaft fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStern Tube Diameter:\u003c\/strong\u003e 3-1\/4\" to 3-3\/8\" - Designed for broad compatibility with common stern tube sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Length (A):\u003c\/strong\u003e 9.175\" - Provides ample space for installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor Diameter (B):\u003c\/strong\u003e 3.75\" - Ensures effective sealing engagement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon Cuff Diameter (C):\u003c\/strong\u003e 3.25\" - Contributes to a durable, long-lasting seal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStern Cuff Length (E):\u003c\/strong\u003e 2\" - Ensures secure attachment to the stern tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Face Seal Design:\u003c\/strong\u003e Compensates for shaft misalignment and vibration, ensuring smooth operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% Watertight Seal:\u003c\/strong\u003e Eliminates bilge water ingress, protecting your vessel's interior.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance Recommendation:\u003c\/strong\u003e Preventative maintenance includes bellows replacement every six years for continued peak performance.\u003c\/li\u003e\n\u003c\/ul\u003e\nCompatibility:\u003cul\u003e\u003cli\u003eSuitable for shafts ranging from 3\/4\" to 6\" (20mm to 150mm), offering wide applicability.\u003c\/li\u003e\u003c\/ul\u003e","brand":"PSS Shaft Seal","offers":[{"title":"Default Title","offer_id":53306734248254,"sku":"CT-118793","price":635.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0287\/3235\/8731\/files\/50862XL.jpg?v=1779140289"}],"url":"https:\/\/www.tugandtow.com\/collections\/marine-hardware-shaft-seals.oembed","provider":"Tug and Tow","version":"1.0","type":"link"}