PSS Shaft Seal Catalog
12Pages

QUALITY MARINE EQUIPMENT SINCE 1981

APPLICATIONS Sail Boats Work Boats Barges Push Boats Power Boats Coast Guard Military Police WAKEBOARD

Never repack a stuffing box or replace a lip seal again with the PSS Shaft Seal The PSS Shaft Seal is Bureau Veritas, ABS & RINA certified. he Packless Sealing System (PSS) Shaft Seal is a mechanical face seal that is created between a rotating stainless steel rotor and a stationary carbon stator. The carbon stator is attached to a convoluted rubber bellow and the back of the bellow is attached to the shaft log (stern-tube) of the boat with hose clamps. During installation, the stainless steel rotor is used to compress the convoluted bellow. The rotor is then secured to the shaft. The...

Main components of a PSS Shaft Seal Carbon / Graphite Stator TYPE A The high density, resin impregnated carbon/graphite stator is a space age composite that is first mixed, molded and then formed under pressure. The blanks are then baked, machined and lapped. The face of our carbon is finished to a flatness of 4 helium light bands (measured .000044” of variation over entire lapped surface). The grade of carbon used in the PSS has an operating temperature over 500 degrees Fahrenheit (+260 Celsius), and cannot melt if TYPE B the seal runs dry, unlike a rubber lip seal or plastic face seal....

(Overall installed length) A Before Ordering 1. Measure your shaft diameter. 2. Measure your stern tube diameter. 3. Check fore and aft measurements. In difficult access areas, wrap a string around the stern tube, measure the circumference and divide by Pi (3.1416). IMPERIAL SIZES SHAFT DIAMETER STERN TUBE DIAMETER ( C ) APPROX. COMPRESSED LENGTH ( A ) C (STERN TUBE DIAMETER) APPROX. COMPRESSED LENGTH ( A )

For shafts 4” to 6” (100mm - 150mm) diameters BEFORE ORDERING 1. Measure your shaft diameter. 2. Measure your stern tube diameter. 3. Check fore and aft measurements. TIP In difficult access areas, wrap a string around the stern tube, measure the circumference and divide by Pi (3.1416). IMPERIAL SIZES DETERMINE YOUR PSS SHAFT SEAL PART # Imperial Sizes Shaft diameter: %” Stern Tube diameter: 114” 02-__-_ Metric Sizes Shaft diameter: 115mm Stern Tube diameter: 140mm • 02- M-_ . Divide by 25.4 to convert to inches. (Round up or down to the closest 14”) example: 140 * 25.4 = 5.511 = (5m -1...

For All PSS Shaft Seal Kits ACCESSORIES MAINTENANCE KIT Prolong the life of your PSS Shaft Seal with a maintenance kit. As with any rubber hose below waterline, the PSS bellows must be inspected on a regular basis for any sign of wear, aging or chemical deterioration. PYI recommends that the bellows be replaced every 6 years. Bellows may need to be more frequently inspected in an environment where non-sealed batteries emit sulfuric acid. Sulfuric acid vapor will accelerate rubber deterioration, as will an ozonator. This is a cost effective way to expand the life of your PSS Shaft Seal....

Installation Examples Replacement Of Classic Stuffing Box Classic Stuffing Box... Before PSS Shaft Seal... After Stern Tube (Shaft Log) Compressed Length Stern Tube (Shaft Log) Shaft Transmission Rubber Hose Shaft Transmission Hull Example Of Powerboat Installation Water Pickup Line Vented Loop Water Pickup Line Crossover Line Powerboat Installation Caution! When the pick up point is located below the waterline an anti-siphon might be required to prevent backflooding of water through the exhaust system and into the engine. Standard boat plumbing practices should be followed. Riser Heat...

Other Applications Other Applications For The PSS Shaft Seal Mixing Tanks Current Pools Industrial Pumps The PSS Shaft Seal has made its way in the multitude of specialty mixing tanks. All mixing tanks equipped with a horizontal mixer require a seal, and the PSS Shaft Seal has proven itself as an ideal solution for this industry. Some examples of the types of mixing tanks you will find the PSS Shaft Seal in are mixing tanks for glue, pharmaceutical, food industry, paper pulp mill, etc. Another application is the wash down tanks for fruits and vegetables. In the last few years this new...

Available in aluminum, steel and stainless steel. PYI Inc., manufacturer of the PSS Shaft Seal, is expanding the PSS product line with the recent development of a ‘Flange & Bladder System'. This system allows you to seal the stern tube while the shaft is not rotating, in order to inspect, clean or replace components of the shaft seal. Another advantage is that if decoupling of the shaft is needed, this operation can be done in the water as the shaft can be moved aft, while the bladder is inflated, with no water intrusion. Of course, the inflatable bladder system can also be used in case of...

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