PSC Piston Seal
The Style PSC is a double acting piston seal designed to replace o-rings, quad-rings, and T-seals with the same groove dimensions (O-ring dash number). Style 575 urethane back-up rings may be added to either or both sides of the “PSC” to accommodate wider groove widths. The PSC is made of 95A Durometer polyurethane, giving it high extrusion and abrasion resistance. The crowned sealing surface produces a positive seal from vacuum to high pressure.
Hercules® Sealing Products also offers a wide base (WB) Style PSC piston seal. These wide base seals have the same characteristics of the standard PSC seals but offer a wider base, eliminating the need to use back-up rings to accommodate wider grooves. NOTE: Piston diameter “I” dimensions are given for piston without wear rings.
SEAL INFORMATION | |
MATERIAL | 95A POLYURETHANE SEAL 70A NITRILE ENERGIZER |
TEMPERATURE RANGE | -40° TO +200° F |
PRESSURE RANGE | 0 TO 5,000 PSI |
SPEED | 3 FT/SEC |
Part Number | A Nom. ID | B Nom. OD | C Nom. Ht |
PSC-203 PSC-204 PSC-205 PSC-207 PSC-208 PSC-210 PSC-211 PSC-212 PSC-213 PSC-214 PSC-216 PSC-218 PSC-218-WB PSC-220 PSC-222 PSC-222-WB PSC-325 PSC-326 PSC-326-WB PSC-328 PSC-329 PSC-330 PSC-330-WB PSC-332 PSC-332-WB PSC-334A-WB PSC-334 PSC-334-WB PSC-336 PSC-337 PSC-338 PSC-338-WB PSC-339 PSC-340 PSC-341 PSC-342A-WB PSC-342 PSC-342-WB PSC-344 PSC-346 PSC-347 PSC-350 PSC-429 PSC-433 PSC-433-WB PSC-437 PSC-439 PSC-441 PSC-442 PSC-443 PSC-444 PSC-445 PSC-446 PSC-447 PSC-448 PSC-449 PSC-450 PSC-451 PSC-452 PSC-456 | 5/16 3/8 7/16 9/16 5/8 3/4 13/16 7/8 15/16 1 1-1/8 1-1/4 1-1/4 1-3/8 1-1/2 1-1/2 1-1/2 1-5/8 1-5/8 1-7/8 2 2-1/8 2-1/8 2-3/8 2-3/8 2-1/2 2-5/8 2-5/8 2-7/8 3 3-1/8 3-1/8 3-1/4 3-3/8 3-1/2 3-1/2 3-5/8 3-5/8 3-7/8 4-1/8 4-1/4 4-5/8 5 5-1/2 5-1/2 6 6-1/2 7 7-1/4 7-1/2 7-3/4 8 8-1/2 9 9-1/2 10 10-1/2 11 11-1/2 13-1/2 | 9/16 5/8 11/16 13/16 7/8 1 1-1/16 1-1/8 1-3/16 1-1/4 1-3/8 1-1/2 1-1/2 1-5/8 1-3/4 1-3/4 1-7/8 2 2 2-1/4 2-3/8 2-1/2 2-1/2 2-3/4 2-3/4 3 3 3 3-1/4 3-3/8 3-1/2 3-1/2 3-5/8 3-3/4 3-7/8 4 4 4 4-1/4 4-1/2 4-5/8 5 5-1/2 6 6 6-1/2 7 7-1/2 7-3/4 8 8-1/4 8-1/2 9 9-1/2 10 10-1/2 11 11-1/2 12 14 | .15 .15 .15 .15 .15 .15 .15 .15 .15 .15 .15 .15 .265 .15 .15 .265 .255 .255 3/8 .255 .255 .255 3/8 .255 3/8 3/8 .255 3/8 .255 .255 .255 3/8 .255 .255 .255 3/8 .255 3/8 .255 .255 .255 .255 .32 .32 1/2 .32 .32 .32 .32 .32 .32 .32 .32 .32 .32 .32 .32 .32 .32 .32 |