PSS 02-112-314 - Dripless Shaft Seal 1 1/2", 3 1/4" Stern Tube

Article BB-02-112-314

€ 684,34

1-2 weeks delivery time
Price incl. 19% VAT

- +

Add to cart

The PSS - PYI Type A PSS Shaft Seal is a mechanical face seal that ensures reliable performance in marine applications. It features a stainless-steel rotor and a stationary carbon flange, providing effective sealing while compensating for propeller thrust movement. The design allows the carbon flange to float around the shaft, addressing alignment and vibration issues, while O-rings prevent wear during operation. This seal operates within a temperature range of 5°F to 225°F and handles pressures up to 15 PSI, making it suitable for various conditions.

Description
Ask a Question

PSS 02-112-314 - Dripless Shaft Seal 1 1/2", 3 1/4" Stern Tube

The PSS - PYI Type A PSS Shaft Seal is designed for reliable performance in marine applications. This mechanical face seal creates a secure sealing interface between the stainless-steel rotor and the stationary carbon flange. The carbon flange is mounted to the front of the bellow using hose clamps, while the bellow's rear attaches to the stern tube, also secured with hose clamps. The stainless-steel rotor is positioned on the shaft in front of the carbon flange, compressing the bellow before being fastened with set-screws.

This pre-load compression ensures constant contact between the rotor and the carbon flange, effectively compensating for variations in movement caused by propeller thrust. The carbon flange is designed to float around the shaft, addressing alignment and vibration issues efficiently.

Sealing is achieved through two O-rings located in the collar's bore, which rotate with the shaft and rotor, preventing wear during operation.

Specifications
- Temperature Limits: 5°F to 225°F (-15°C to 107°C)
- Pressure Limits: 15 PSI (1 BAR)
- Shaft RPM Limits: 10,000 RPM
- Carbon Graphite: Lapped to 4 HLB (0.000044" tolerance)
- 316SS / Nitronic 50: Faced to 9 Ra
- Bellow Material: Molded Nitrile - PVC
Dimensions
- (A) Shaft Diameter: 1 1/2"
- (B) Stern Tube Diameter: 3 1/4" to 3 3/8"
- (C) Uncompressed Length: 9.2175" (Approx. Compression: 1")
- (D) Rotor Diameter: 3.75"
- (E) Stern Cuff Length: 2"