Leak-Free Reliability Starts Here
At AB Marine, we install and service PSS Shaft Seals — the world’s leading mechanical seal for propeller shafts. Trusted by top boat builders, shipyards and serious boaties across the globe, the PSS system is known for its watertight performance, long lifespan, and virtually maintenance-free design. If you're sick of dripping stuffing boxes or constant shaft gland adjustments, PSS is the smart solution.
Why Choose PSS?
PSS Shaft Seals offer industry-leading reliability for both new builds and retrofit projects. Designed to accommodate shaft movement, misalignment and vibration, these mechanical face seals work under pressure — without the leaks.
100% Watertight — Keeps your bilge dry
Low Maintenance — No greasing or frequent adjustments
Saves You Money — Prevents shaft wear and reduces long-term maintenance
Built Tough — Stainless steel rotor, carbon flange, and marine-grade bellows
Proven Globally — Used on everything from production cruisers to military craft
Advanced Engineering Made Simple
At the heart of the PSS system is a carbon-graphite flange that remains stationary while a stainless-steel rotor spins with the shaft. The contact between these two ultra-flat surfaces forms a perfect seal, maintained by a preloaded compression system.
This simple, elegant design results in:
No friction wear on the shaft
Constant sealing pressure at all RPMs
Long-term durability in rough marine conditions
Whether your boat is moored full time or runs daily, the PSS system offers peace of mind and dry bilges.
Fits Almost Any Size
Available for shafts ranging from 20mm to 150mm (¾” to 6½”), PSS Shaft Seals are suitable for:
Small recreational yachts and launches
Mid-size cruisers and sportfishing vessels
Commercial vessels and workboats
We’ll help you choose the right model for your setup — and fit it with precision.
Expert Installation
AB Marine is a certified installer of PSS Shaft Seals. Our team ensures every seal is properly aligned, torqued, and tested — whether as part of a full driveline upgrade or a simple retrofit.
Onsite installation at our workshop inside Cracker Bay (with drive-in access)
Shaft inspection and cutlass bearing checks
Seal replacements or complete system installs
Advice and support for boat builders and commercial operators