PSS TYPE A The Type A Seal is our most common product, with over 200,000 units in operation globally. This seal will satisfy most applications for pleasure boats and smaller commercial boats. For Shaft Diameters ¾” - 3¾” (20mm - 95mm)
COMPONENTS STAINLESS STEEL ROTOR
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. 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 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 bellow on the Type A seal is molded out of a Nitrile compound. Nitrile is known for its resistance to petroleum products. It provides the best combination of durability, strength and elasticity necessary in this application.
Clamp Jacket
Nitrile bellow
Carbon stator
Set screw
O-ring
Hose clamp
Hose barb*
Stainless steel rotor
* A Hose Barb is recommended for vessels exceeding 10 knots.
For maintenance schedule refer to the PSS Maintenance Kits on page 10.
TECHNICAL SPECIFICATIONS
(Overall Compressed Length) C
Temperature Limits 5°F to 225°F (-15°C to 107°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 Molded Nitrile - PVC
B
D
A
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 )
1¼”, 1½”, 1¾”, 2”, 2¼”
6.00” - 6.125”
2.375”
30, 40, 45, 50, 60
152 - 156
61
¾”, ⅞”, 1”, 1⅛”
20, 22, 25, 28, 30
2½”
6.625”
2.375”
65
168
61
1¾”, 2”, 2¼”, 2½”
6.625” - 6.75”
2.875”
45, 50, 60, 65
168 - 172
73
1¼”, 1⅜”
32, 35
2¾”, 3”, 3¼”, 3½”
8.125” - 8.313”
2.875”
70, 80, 85, 90
206 - 211
73
2”, 2¼”, 2½”, 2¾”, 3”, 3¼”, 3½”
8.00” - 8.218”
3.75”
50, 60, 65, 70, 75, 80, 85, 90
203 - 209
96
1½”, 1⁹⁄ ¹⁶ ”, 1¾”, 2”
38, 40, 45, 50, 55
3¾”, 4”
8.405”
3.75”
95, 100
213
96
3¼”, 3½”, 3¾”, 4”
8.625”
4.20”
85, 90, 95, 100
219 - 224
107
2¼”, 2½”
60, 65
4¼”, 4½”, 4¾”, 5”
9.25”
4.20”
110, 115, 120, 125
235
107
4”, 4¼”, 4½”, 4¾”, 5”
9.125” - 9.313”
5.00”
100, 110, 115, 120, 125
231 - 237
127
2¾”, 3”
70, 75, 80
5¼”, 5½”, 5¾”, 6”
9.25” - 9.438”
5.00”
135, 140, 145, 150
235 - 240
127
3¼”, 3½”, 3⅝”, 3¾”
4½”, 4¾”, 5”, 5¼”, 5½”, 5¾”, 6”
9.675” - 9.863
6.00”
85, 90, 95
115, 120, 125, 130, 135, 140, 145, 150
245 - 250
153
TO ORDER VISIT WWW.PYIINC.COM OR CALL 425-355-3669
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PSS SHAFT SEAL |
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