PSS Type C Shaft Seal

Description

To receive a quote for a PSS Type C Shaft Seal, download and fill out the Quote Form below.

Unlike other PSS Shaft Seals, Type C has 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:

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 and 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.

Temperature Limits: -13°F to 425°F (-25°C to 220°C)

Max Pressure: 10 PSI (0.68 BAR)

Shaft RPM Limits: 1,500 RPM

Carbon Graphite: Lapped to 4 HLB (0.000044″ tolerance)

316SS / Nitronic 50: Faced to -/= 13 Ra

Bellow Material: Reinforced Mandrel formed silicone / fabric

How Does It Work?

1. Step 1: This clamp assembly maintains the PSS Type C preload (compression) without the need for set screws.
2. Step 2: Nitronic 50 SS rotor surfaced to 9-12 Ra finish.
3. Step 3: Machined acetal hub with carbon stator insert, lapped to 4 HCB.
4. Step 4: Water is fed into the PSS Shaft Seal for cooling and lubricating the seal faces on high speed vessels.
5. Step 5: Stationary acetal/carbon stator clamped to the silicone bellow, which is attached to the stern tube (shaft log)
6. Step 6: T-Bolt Type Hose clamps secure the bellow to the stern tube and to the acetal/carbon stator to the bellow.
7. Step 7: Stern Tube made from your choice of aluminum, steel or 316L stainless steel, will be directly welded onto the vessel.