Pss Shaft Seal HS Shaft Seal - 1 1/2" x 2 1/2" x 8 1/8". P.S.S. Shaft Seals have logged up to 40,000 hours of hassle-free operation! High-density carbon and high-density stainless steel components create a dripless mechanical seal that provides years of use. The stationary carbon flange attaches to the stern tube with a nitrile bellows and is held in contact with the stainless-steel flange that rotates along with the propeller shaft. The force of the compressed bellows presses the flanges together, which creates a 100% watertight seal that is virtually maintenance free. This system is self-adjusting and it eliminates the need for periodic adjustment required by a conventional stuffing box. The seal can be used with a pitted or slightly misaligned shaft because its designed to compensate for small flaws. Additionally, it wont melt or have a catastrophic failure. P.S.S. makes its seals with space-age carbon composites, heavy-duty nitrile O-rings and bellows and 316 stainless steel rotor and fasteners. The durable seals are designed and manufactured to resist extreme temperatures, saltwater, UV radiation, petroleum-based products and corrosion. Typical break-in after proper installation is one hour. Propeller shaft and stern tube diameter are necessary when ordering. Sizes not listed are available by special order. Key Features: High-density carbon flange High-density stainless-steel flange Nitrile bellows and O-rings 316 stainless-steel rotor and fasteners Three-year limited warranty How to order the seal you need Select your system according to the shaft diameter, stern tube diameter and the required amout of bellows compression. For help, see the P.S.S. Shaft Seal Installation Manual. We offer a range of P.S.S. Shaft Seals to cover most applications, but if you do not see what you are looking for here, others are available by Special Order You can also call 1-800-BOATING for help with selection. Our selection of P.S.S. Shaft Seals includes the following: Shaft DiameterStern Tube DiameterCompressed LengthModelP.Y.I. Number30mm2"6
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