The PSS Shaft Seal Packless Sealing System is a dripless stuffing box and packing gland replacement for sailboat and power boat drivetrains.
The dripless shaft seal is a mechanical seal that uses a self-aligning carbon-graphite stator to ensure a 100% watertight seal with proven reliability.
This packless seal will eliminate shaft wear and minimize corrosion.
The PYI PSS Dripless Shaft Seal is the number one selling marine mechanical seal worldwide and is installed as standard equipment by many of the world’s most reputable boat builders & yards.
How Does The PSS Mechanical Shaft Seal Work?
A mechanical shaft seal is created by the contact of a turning surface against a stationary surface. In the case of the PSS Dripless Shaft Seal, the stationary surface is a carbon flange held in contact against a stainless steel rotor which turns with the shaft. The carbon flange is attached to the boat by a nitrile bellow which, with the help of water pressure, produces a constant contact between the carbon and the stainless steel ring. These type of seals are unaffected by engine motion or vibrations.
The result is a 100% watertight and totally maintenance-free dripless shaft seal.
Available for shafts from 20mm to 95mm. Larger sizes available upon request. Please use our 'Product Inquiry
' Form, or call 1-800-454-6960 for larger sizes.