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PSS 02-500-700 - Dripless Shaft Seal 5", 7" Stern Tube
The PSS 02-500-700 Dripless Shaft Seal is designed to provide a reliable sealing solution for marine applications. This innovative product features a mechanical face seal that ensures optimal performance and longevity.
Type B PSS Shaft Seal utilizes a mechanical face seal, where the sealing surface forms between the flat surfaces of a rotating stainless-steel rotor and a stationary carbon flange. The carbon flange is securely attached to the bellows with hose clamps, while the back end fits over the stern tube, also secured with hose clamps. The stainless-steel rotor is mounted on the shaft in front of the carbon flange, compressing the bellows to maintain constant contact between the two surfaces. This pre-load allows the seal to accommodate the variable movement caused by propeller thrust.
Additionally, the carbon flange is designed to float around the shaft, compensating for misalignment and vibration issues. The stainless-steel rotor is sealed to the shaft with two recessed O-rings, which rotate with the assembly and are resistant to wear during operation.
Temperature Limits: -13°F to 425°F (-25°C to 220°C)
Pressure Limits: 50 PSI (3.5 BAR)
Shaft RPM Limits: 7,000 RPM
Carbon Graphite Tolerance: Lapped to 4 HLB (0.000044" tolerance)
316SS / Nitronic 50 Finish: Faced to 9-12 Ra
Bellows Material: Mandrel formed silicone / fabricSpecifications:
Part #: 02-500-700
Shaft Diameter (A): 5"
Stern Tube Diameter (B): 7" to 7-1/8"
Approximate Length (C): 13.742"
Approximate Compression: 1" to 1-1/4"
Rotor Diameter (D): 7.875"
Stern Cuff Length (E): 2.5" -