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HERCULES PSC PISTON SEAL

    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
    MATERIAL95A POLYURETHANE
    SEAL
    70A NITRILE
    ENERGIZER
    TEMPERATURE
    RANGE
    -40° TO +200° F
    PRESSURE
    RANGE
    0 TO 5,000 PSI
    SPEED3 FT/SEC
    Part NumberA
    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