PSS Shaft Seal - 1-1/2" Shaft / 2-1/2" Tube Marine Mechanical Seal

Eliminate bilge water and protect your propeller shaft with the PSS Shaft Seal, the world's number one selling marine mechanical seal engineered for ultimate reliability. Trusted by leading boat builders and recognized for its superior performance, this seal offers a 100% watertight solution that significantly reduces wear compared to traditional packing glands. Certified by Bureau Veritas, ABS, and Rina, its innovative design compensates for misalignment and vibration, ensuring smooth and efficient underwater operation. Upgrade your vessel with this durable, maintenance-free component today.

• Precision Fitment: Engineered for 1-1/2" propeller shafts and 2-1/2" to 2-5/8" stern tubes, ensuring optimal sealing.
• 100% Watertight Seal: Prevents bilge water ingress, safeguarding your vessel from leaks and damage.
• Shaft Protection: Significantly reduces wear on propeller shafts compared to traditional packing glands, extending shaft life.
• Misalignment & Vibration Compensation: Features a floating carbon flange that accommodates shaft misalignment and vibration, ensuring smooth operation and prolonging component life.
• Durable Construction: Built with high-quality 316SS / Nitronic 50 rotor faced to 9 Ra and carbon graphite lapped to 4 HLB (0.000044" tolerance) for long-lasting performance.
• Operating Temperature Range: -25°F to +225°F (-31°C to +107°C).
• Pressure Limit: Rated for up to 15 PSI.
• Shaft RPM Limit: Rated for up to 10,000 RPM.
• Bellow Material: Constructed from durable Molded Nitrile - PVC.
• Total Length (A): 9.175 inches.
• Compressed Length (A): 8.175 inches.
• Rotor Diameter (B): 3.75 inches.
• Carbon Cuff Diameter (C): 3.25 inches.
• Stern Cuff Length (E): 2 inches.

This specific PSS Shaft Seal model (02-112-212) is designed for 1-1/2" propeller shafts and 2-1/2" to 2-5/8" stern tubes. The PSS Shaft Seal product line offers solutions for a broad range of shaft sizes from 3/4" to 6". For optimal longevity and performance, PYI recommends inspecting the bellows regularly and replacing them at six-year intervals. A comprehensive Maintenance Kit, including replacement bellows, O-rings, set screws, and hose clamps, is available to ensure your seal remains in peak condition.