PSS 02-078-214 - Dripless Shaft Seal 7/8", 2 1/4" Stern Tube

Article BB-02-078-214

€ 397,88

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

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The PSS Type A Shaft Seal is a mechanical face seal designed to create a reliable, dripless connection between a boat's rotating shaft and stern tube. It uses a stainless-steel rotor and carbon flange to maintain constant contact, compensating for propeller thrust and shaft misalignment. With O-rings preventing wear, the seal operates smoothly under various conditions, handling temperatures from 5°F to 225°F, pressure up to 15 PSI, and shaft speeds of up to 10,000 RPM.

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PSS 02-078-214 - Dripless Shaft Seal 7/8", 2 1/4" Stern Tube

The PSS Type A Shaft Seal is a highly reliable mechanical face seal designed for boats. Its advanced construction ensures a long-lasting, dripless seal between the rotating shaft and the stern tube, reducing the need for maintenance and providing smooth operation under varying conditions.
- The seal is formed by the contact between the stainless-steel rotor and stationary carbon flange.
- The carbon flange is securely attached to the bellow, which fits over the stern tube.
- The stainless-steel rotor compresses the bellow, maintaining constant pressure to allow compensation for propeller thrust.
- The carbon flange floats around the shaft, compensating for shaft misalignment and vibration.
- O-rings recessed into the stainless-steel rotor prevent wear and ensure a tight seal.
Specifications
- Temperature Range: 5°F to 225°F (-15°C to 107°C)
- Pressure Limit: 15 PSI (1 BAR)
- Maximum Shaft RPM: 10,000 RPM
- Carbon Graphite: Lapped to 4 HLB (0.000044" tolerance)
- 316 Stainless Steel / Nitronic 50: Faced to 9 Ra
- Bellow Material: Molded Nitrile - PVC
Dimensions
- Shaft Diameter: 7/8"
- Stern Tube Diameter: 2 1/4" to 2 3/8"
- Uncompressed Length: 6.75"
- Compression: 3/4"
- Rotor Diameter: 2.375"
- Stern Cuff Length: 1.5"