PSS Shaft Seal Maintenance Kit 2 1/4" Shaft 3 1/2" Tube

The PSS Shaft Seal Maintenance Kit 2 1/4" Shaft 3 1/2" Tube (MPN 07-214-312R) is a professional-grade replacement and maintenance solution designed for marine propulsion systems that rely on PSS bellows shaft seals. This kit addresses the critical need for regular inspection and preventive replacement of wear components in below-waterline shaft sealing assemblies, protecting against water intrusion, corrosion, and catastrophic seal failure that can compromise vessel integrity.

PSS bellows seals operate under constant submersion and dynamic shaft rotation, exposing elastomer components to saltwater, UV exposure, ozone, and thermal cycling. This maintenance kit supplies the replacement parts and materials necessary to service a 2 1/4-inch shaft diameter installation with a 3 1/2-inch tube diameter configuration, restoring seal integrity without requiring complete system replacement. The kit's engineered design maintains the precision fit and pressure tolerance essential for reliable, drip-free operation in demanding marine environments.

Vessel owners and marine mechanics performing routine maintenance or addressing early signs of seal wear—such as visible weeping, discoloration, or hardening of bellows material—will find this kit essential for extending seal service life and preventing expensive shaft damage. The kit is sized specifically for PSS systems with the stated shaft and tube dimensions, ensuring drop-in compatibility with existing installations. Regular maintenance using this kit typically extends seal longevity to six-year intervals and reduces the risk of unscheduled haul-outs or emergency repairs at sea.