PSS Shaft Seal 02-212-312 Dripless 2-1/2" Shaft Marine Seal

The PSS Shaft Seal 02-212-312 is a mechanical face seal designed for 2-1/2" propeller shafts on marine vessels. This packless sealing system (P.S.S.) replaces traditional packing glands with a maintenance-free, dripless design that is installed by boat builders and approved by the USCG as standard equipment.

Key Features:

• Dripless mechanical face seal eliminates bilge water accumulation
• Maintenance-free operation with no adjustment required
• Reduces wear on propeller shafts compared to traditional packing
• Fits 2-1/2" diameter shafts
• USCG approved for commercial and recreational marine applications
• Self-aligning carbon/ceramic seal faces for reliable performance
• Water-lubricated design requires no greasing

The PSS system uses a stainless steel rotor that rotates with the shaft and a stationary stainless steel bellows housing. A carbon flange seal face rotates against a silicon carbide seal face, creating a watertight seal while allowing thermal expansion. The system automatically compensates for shaft movement and misalignment, making it ideal for both sailboats and powerboats.