PSS 02-100-212 - Dripless Shaft Seal 1", 2 1/2" Stern Tube

SKU: BB-02-100-212

€ 426,96

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

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The PSS - PYI Type A PSS Shaft Seal is a mechanical face seal that ensures reliable performance by forming a sealing surface between a rotating stainless-steel rotor and a stationary carbon flange. The design allows the carbon flange to float around the shaft, accommodating misalignments and vibrations, while the rotor's pre-load compression maintains constant contact for effective sealing. Featuring O-rings that prevent wear during operation, the shaft seal operates within temperature limits of 5°F to 225°F and pressure limits of 15 PSI, making it suitable for various marine applications.

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PSS 02-100-212 - Dripless Shaft Seal 1", 2 1/2" Stern Tube

The PSS - PYI Type A PSS Shaft Seal is engineered for superior performance and reliability. This mechanical face seal employs a unique design where the sealing surface is formed between the smooth flat surfaces of a rotating stainless-steel rotor and a stationary carbon flange. The carbon flange is securely attached to the front of the bellow with hose clamps, while the back of the bellow fits snugly over the stern tube, also secured with hose clamps. The rotor is mounted on the shaft in front of the carbon flange and compresses the bellow, ensuring a tight seal.

This pre-load compression guarantees consistent contact between the rotor and carbon flange, enabling the PSS to adapt to the varying fore and aft movements caused by propeller thrust. The carbon flange is designed to float around the shaft, accommodating misalignments and vibrations effectively.

The stainless-steel rotor features two O-rings that seal the shaft, recessed within the collar's bore. These O-rings rotate with the shaft and rotor, preventing wear during operation.
- 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
Specifications
- (A) Shaft Diameter: 1"
- (B) Stern Tube Diameter: 2 1/2" to 1 5/8"
- (C) Uncompressed Length: 7.375" Approx. Compression: 3/4"
- (D) Rotor Diameter: 2.375"
- (E) Stern Cuff Length: 1.5"