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HERCULES 590 BACK-UP RING

    590 Back-Up Ring

    Style 590 Back-up Rings feature exceptional strength and abrasion resistance along with a 53 Shore D hardness rating which makes them suitable for high pressure service where extrusion is a problem. Primarily used as a u-seal back-up,these rings can be used with o-rings. They also retrofit urethane and PTFE back-up rings, with greater performance characteristics. “S” suffix designates a split ring.

    SEAL INFORMATION
    MATERIALHIGH PERFORMANCE
    URETHANE
    TEMPERATURE
    RANGE
    -40° TO +275° F
    PRESSURE
    RANGE
    VARIES ACCORD
    ING TO DIAMETRAL
    CLEARANCE
    Part NumberA
    Nom. ID
    B
    Nom. OD
    C
    Nom. Ht
    1/8″ C/S
    590-15
    590-17
    590-19S
    590-214
    590-227
    590-228
    590-237
    590-239
    1/2
    5/8
    3/4
    1
    2-1/8
    2-1/4
    3-3/8
    3-5/8
    3/4
    7/8
    1
    1-1/4
    2-3/8
    2-1/2
    3-5/8
    3-7/8
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    5/32″ C/S
    590-32
    590-34S
    590-36
    1
    1-3/16
    1-3/8
    1-5/16
    1-1/2
    1-11/16
    1/16
    1/16
    1/16
    3/16″ C/S
    590-324
    590-325
    590-45
    590-45S
    590-46
    590-48
    590-49
    590-49S
    590-338
    590-341
    590-345
    590-346
    590-347
    590-349
    590-352
    590-354
    590-358
    1-3/8
    1-1/2
    1-5/8
    1-5/8
    1-3/4
    2
    2-1/8
    2-1/8
    3-1/8
    3-1/2
    4
    4-1/8
    4-1/4
    4-1/2
    4-7/8
    5-1/8
    5-5/8
    1-3/4
    1-7/8
    2
    2
    2-1/8
    2-3/8
    2-1/2
    2-1/2
    3-1/2
    3-7/8
    4-3/8
    4-1/2
    4-5/8
    4-7/8
    5-1/4
    5-1/2
    6
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    7/32″ C/S
    590-54
    590-57
    590-57S
    590-58
    2-1/2
    2-13/16
    2-13/16
    3
    2-15/16
    3-1/4
    3-1/4
    3-7/16
    1/16
    1/16
    1/16
    1/16
    1/4″ C/S
    590-66
    590-66S
    590-68
    590-70
    590-70S
    3-1/2
    3-1/2
    4
    4-1/2
    4-1/2
    4
    4
    4-1/2
    5
    5
    1/16
    1/16
    1/16
    1/16
    1/16
    9/32″ C/S
    590-73S
    590-75
    590-5.43X6S
    590-6.43X7S
    4-7/16
    5
    5-7/16
    6-7/16
    5
    5-9/16
    6
    7
    1/16
    1/16
    1/16
    1/16
    5/16″ C/S
    590-79
    590-79S
    590-5.5X6.12
    590-83
    590-83S
    590-84
    590-84S
    5-3/8
    5-3/8
    5-1/2
    6-3/8
    6-3/8
    7-3/8
    7-3/8
    6
    6
    6-1/8
    7
    7
    8
    8
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    1/16
    11/32″ C/S
    590-85S9-5/16101/16
    3/8″ C/S
    590-86S11-1/4121/16
    13/32″ C/S
    590-13.18X14S13-3/16141/16
    1/2″ C/S
    590-11X12S
    590-87S
    11
    13
    12
    14
    1/16
    1/16