PSS TYPE C For Shaft Diameters 6½” - 8” (165mm - 203mm) Unlike other PSS Shaft Seals, the Type C has an integrated support for the carbon stator, so that it does not rely on the bellow for weight support. The PSS Type C Shaft Seal is available in three installation configurations: • Weld on Stern Tube • Flange Mounted • Flange Mounted with Integrated Bladder System
As with all PSS seals, the PSS Type C model is a mechanical face seal using the flat surfaces of the rotating rotor and the stationary carbon flange / ring to create a water tight, dripless system. Commercial oriented by design, the Type C system uses a N50 rotor fitted on the shaft in front of the carbon flange and is secured in compression with a 316L split collar. The stationary acetal/carbon stator is attached to a heavy duty silicone bellow clamped to the vessel using the appropriate mounting option.
TYPE C MODELS
WELD ON STERN TUBE Ideal for new construction installations, this system includes the standard Type C Seal and is designed as a weld on application. The internal tube will support the weight of the acetal/carbon stator so it stays centered to the shaft. Available in aluminum, mild steel or 316L, this mounting system ensures minimal installation time, integrates with many vessel configurations and eliminates the need for an additional adapter/bolt on system. 1. This clamp assembly maintains the PSS Type C preload/compression. 2. Nitronic 50 SS rotor surfaced to 9 Ra finish. 3. Machined acetal hub with carbon stator insert, lapped to 4 HLB. 4. Water is plumbed into the PSS Shaft Seal for cooling/lubricating the seal faces on high speed vessels. 5. Reinforced Silicone bellow houses the stationary acetal/carbon stator and is secured to the provided stern tube. 6. T-Bolt style hose clamps secure the bellow to the stern tube and the acetal/carbon stator in the bellow. 7. Stern Tube made from your choice of aluminum, mild steel or 316L stainless steel, will be welded directly onto the vessel.
FLANGE MOUNTED Ideal for retrofit or new construction installations, this system includes the standard Type C Seal and is designed as a bolt on application. The internal tube will support the weight of the acetal/carbon stator so it stays centered to the shaft. Available in aluminum, mild steel or 316L, this mounting system is machined to match your specific application/ existing flange pattern and is offered “pre-drilled” to your bolt pattern, size and spacing or supplied “blank” for simplicity and drilling at the time of installation. 1. This clamp assembly maintains the PSS Type C preload/compression. 2. Nitronic 50 SS rotor surfaced to 9 Ra finish. 3. Machined acetal hub with carbon stator insert, lapped to 4 HLB. 4. Water is plumbed into the PSS Shaft Seal for cooling/lubricating the seal faces on high speed vessels. 5. Reinforced Silicone bellow houses the stationary acetal/carbon stator and is secured to the provided stern tube. 6. T-Bolt style hose clamps secure the bellow to the stern tube and the acetal/carbon stator in the bellow. 7. Flange manufactured from your choice of aluminum, mild steel or 316L stainless steel.
TO ORDER VISIT WWW.PYIINC.COM OR CALL 425-355-3669
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| PSS SHAFT SEAL
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