The PSS (Packless Sealing System) mechanical seal is the world’s best-selling watertight propeller shaft seal. It eliminates dripping into the bilge, does not cause wear to the propeller shaft and requires no maintenance or periodic adjustments
Upgrade your boat’s propeller shaft sealing system with PSS Shaft Seal technology. Unlike traditional braided packing glands (which require constant dripping to lubricate themselves and eventually scratch the shaft), the PSS seal creates a 100% watertight mechanical seal at the front.
The sealing surface is created by contact between a 316L stainless steel rotor (fixed to the shaft) and a high-density carbon/graphite stator (fixed to the rubber bellows).
Advantages: Always Dry Bilge: Completely eliminates bilge water caused by shaft seepage –
No Shaft Wear: Contact occurs between carbon and steel, protecting the propeller shaft from scuffing or corrosion – Zero Maintenance: There is no need to periodically tighten or adjust bolts as with older gland seals – Thermal and Pressure Resistance: Resistant to high temperatures and thermal shocks – Air/Water Injection: Fitted with a brass nozzle holder for air venting (on sailing/displacement boats) or for the injection of cooling water (on high-speed planing boats)
