PSS PRO
For Shaft Diameters 1¼” - 3¾” (32mm - 95mm)
COMPONENTS STAINLESS STEEL ROTOR
The PSS "PRO" model is manufactured with commercial applications in mind.
The rotor is manufactured out of 316L stainless steel. It is secured on the shaft using 2 pairs of set screws positioned at 90 degrees for maximum holding power. A locking collar is placed in front of the rotor and further retains the propeller or rudder shaft in case of catastrophic failure of the coupling or if the shaft comes free from the coupling. This rotor does not need replacement or maintenance under normal operating conditions. CARBON STATOR (SINGLE INJECTED) The grade of carbon composite used in the PSS PRO 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 PRO bellow is constructed out of high temp silicone laminated with either 4 or 5 plies of polyester fabric (aramid in larger sizes) and covered with a layer of fluorosilicone. 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*
Silicone bellow
Carbon stator
Retention collar
Set screw
O-ring
Hose clamp
Hose barb
Stainless steel rotor
* Steel hoops come standard on 2¼" shaft diameters and up.
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 10,000 RPM Carbon Graphite Lapped to 4 HLB (0.000044" tolerance) 316 SS / Nitronic 50 Faced to 9 Ra Bellow Material Mandrel formed silicone / fabric
B
A D
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 )
1¾", 2", 2¼", 2½"
8.055" - 8.180"
2.875"
45, 50, 60, 65
8.055" - 8.180"
73
1¼", 1⅜"
32, 35
2¾", 3", 3¼", 3½"
9.555" - 9.743"
2.875"
70, 80, 85, 90
9.555" - 9.743"
73
2", 2¼", 2½", 2¾", 3", 3¼", 3½"
7.842" - 8.3305"
3.75"
50, 60, 65, 70, 75, 80, 85, 90
7.842" - 8.3305"
96
1½", 1⁹⁄ ¹⁶ ", 1¾", 2"
38, 40, 45, 50, 55
3¾", 4"
7.842" - 8.3305"
3.75"
95, 100
7.842" - 8.3305"
96
3¼", 3½", 3¾", 4"
8.675"
4.20"
85, 90, 95, 100
8.675"
107
2¼", 2½"
60, 65
4¼", 4½", 4¾", 5"
8.800" - 9.670"
4.20"
110, 115, 120, 125
8.800" - 9.670"
107
4", 4¼", 4½", 4¾", 5"
8.800" - 9.988"
5.00"
100, 110, 115, 120, 125
8.800" - 9.988"
127
2¾", 3"
70, 75, 80
5¼", 5½", 5¾", 6"
8.800" - 9.988"
5.00"
135, 140, 145, 150
8.800" - 9.988"
127
3¼", 3½", 3⅝", 3¾" 4½", 4¾", 5", 5¼", 5½", 5¾", 6"
9.350" - 11.300"
6.00"
85, 90, 95
115, 120, 125, 130, 135, 140, 145, 150 9.350" - 11.300"
153
TO ORDER VISIT WWW.PYIINC.COM OR CALL 425-355-3669
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| PSS SHAFT SEAL
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