PSS TYPE B For Shaft Diameters 4” - 6½” (100mm - 165mm)
COMPONENTS
For over 20 years, the type B seal has proven to be a workhorse for the commercial boat industry.
STAINLESS STEEL ROTOR The rotor on the Type B seal is manufactured out of Nitronic 50 stainless alloy. It is secured on the shaft a with large locking collar placed in front of the rotor. This collar (clamp) has a dual purpose: it secures the rotor in place on the shaft and is used as a tool during installation. The Nitronic 50 material is a very high grade of stainless steel which is almost totally corrosion resistant. This rotor does not need replacement under normal operating conditions. CARBON STATOR (DUAL INJECTED) The grade of carbon composite used in the PSS Shaft Seal has a maximum operating temperature of 500° F (+260° C) and will not melt if the seal runs dry for a short period of time unlike a lip seal or a plastic face seal. The high density of the carbon greatly increases the longevity and wear resistance. The carbon should not need to be replaced under normal operating conditions. BELLOW The Type B bellow is constructed out of high temp silicone laminated with either 4 or 5 plies of polyester fabric (aramid in larger sizes). On the larger models, the strength is greatly increased by the use of stainless steel hoops laid into the convolutions of the bellow.
Clamp Jacket
Steel hoops
Hose barb
Silicone bellow
Collar clamp
T-Bolt Clamp
O-ring
Carbon stator
Nitronic 50 Stainless steel rotor
For maintenance schedule refer to the PSS Maintenance Kits on page 10.
TECHNICAL SPECIFICATIONS
(Overall Compressed Length) C
Temperature Limits -13°F to 425°F (-25°C to 220°C) Pressure Limits 15 PSI (1 BAR) Shaft RPM Limits 7,000 RPM Carbon Graphite Lapped to 4 HLB (0.000044" tolerance) 316 SS / Nitronic 50 Faced to 9 Ra Bellow Material Mandrel formed silicone / fabric
A
D
B
IMPERIAL SIZES
METRIC SIZES (mm)
APPROXIMATE COMPRESSED LENGTH ( C )
Rotor Diameter ( D )
APPROXIMATE COMPRESSED LENGTH ( C )
Rotor Diameter ( D )
SHAFT DIAMETER ( A )
STERN TUBE DIAMETER ( B )
SHAFT DIAMETER ( A )
STERN TUBE DIAMETER ( B )
4", 4¼"
5½", 5¾", 6", 6¼", 6½", 6¾", 7"
12.189"
7"
100, 105, 110 140, 145, 150, 160, 165, 170, 180
310
178
4½"
5½", 5¾", 6", 6¼", 6½", 6¾", 7"
12.189"
7.875"
115
140, 145, 150, 160, 165, 170, 180
310
201
4¾”, 5”, 5½"
6½", 6¾", 7", 7¼", 7½", 7¾", 8", 8⁵⁄ ⁸ "
12.742" - 12.920"
7.875"
120, 130, 140
165, 170, 180, 185, 190, 195, 205, 220
315 - 324
201
6”
6½", 6¾", 7", 7¼", 7½", 7¾", 8", 8⁵⁄ ⁸ "
12.920" - 13.250"
8.875"
150
165, 170, 180, 185, 190, 195, 205, 220
328 -337
226
6½”
6½”, 6¾”, 7”, 7¼”, 7½”, 7¾”, 8”, 8⁵⁄ ⁸ ”
12.920” - 13.250”
8.875”
165
165, 170, 180, 185, 190, 195, 205, 220
328 -337
226
TO ORDER VISIT WWW.PYIINC.COM OR CALL 425-355-3669
6
PSS SHAFT SEAL |
Made with FlippingBook HTML5