| PYI PSS Shaft Seal | | | | | PYI Type A Packless Sealing System Shaft Seals The PSS Shaft Seal from PYI is the number one selling marine mechanical shaft seal worldwide. A PSS Shaft Seal is a mechanical face seal that is created between the flat surfaces of a rotating stainless steel rotor and a stationary carbon flange. The Binnacle stocks a number of popular PSS Shaft Seal sizes, and can special order whatever shaft diameter and stuffing box combination you require. | | | | | | | |