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O-Rings

FSC 5331: O-Rings

Federal Supply Class (FSC) 5331 covers O-rings, the round-section elastomeric seals used to seal static and dynamic joints. The catalog includes O-rings built to AS568, MIL-SPEC, and industry standards.

O-rings seal connections in hydraulic, pneumatic, fuel, and fluid systems by compressing in a groove. They are among the most widely used sealing elements in machinery.

Common materials include nitrile (Buna-N), fluorocarbon (Viton), silicone, EPDM, and PTFE, selected for fluid compatibility and temperature range. Sizes follow standard dash-number series for repeatable replacement.

5331-01-533-1000 (818548-116)

NIIN: 01-533-1000
In stock
NSN: 5331-01-533-1000
FSC Code: 5331
MPN: 818548116

5331-01-533-0976 (818548-247)

NIIN: 01-533-0976
In stock
NSN: 5331-01-533-0976
FSC Code: 5331
MPN: 818548247

5331-01-551-2055 (818548-014)

NIIN: 01-551-2055
In stock
NSN: 5331-01-551-2055
FSC Code: 5331
MPN: 818548014

5331-01-533-1153 (818548-122)

NIIN: 01-533-1153
In stock
NSN: 5331-01-533-1153
FSC Code: 5331
MPN: 818548122

5331-01-533-0999 (818548-222)

NIIN: 01-533-0999
In stock
NSN: 5331-01-533-0999
FSC Code: 5331
MPN: 818548222

5331-01-253-7495 (KDAC-10378)

NIIN: 01-253-7495
In stock
NSN: 5331-01-253-7495
FSC Code: 5331
MPN: KDAC10378

5331-01-339-0717 (KDAC-10844)

NIIN: 01-339-0717
In stock
NSN: 5331-01-339-0717
FSC Code: 5331
MPN: KDAC10844

5331-01-338-6641 (KD61428-5)

NIIN: 01-338-6641
In stock
NSN: 5331-01-338-6641
FSC Code: 5331
MPN: KD614285

5331-01-361-5426 (817-5735-001)

NIIN: 01-361-5426
In stock
NSN: 5331-01-361-5426
FSC Code: 5331
MPN: 8175735001

5331-01-278-5029 (KC2459-205)

NIIN: 01-278-5029
In stock
NSN: 5331-01-278-5029
FSC Code: 5331
MPN: KC2459205

5331-01-223-6766 (KC103-6)

NIIN: 01-223-6766
In stock
NSN: 5331-01-223-6766
FSC Code: 5331
MPN: KC1036

5331-00-865-2124 (KC009-002-003PC2NPRN)

NIIN: 00-865-2124
In stock
NSN: 5331-00-865-2124
FSC Code: 5331
MPN: KC009002003PC2NPRN

5331-01-476-6536 (816-0012)

NIIN: 01-476-6536
In stock
NSN: 5331-01-476-6536
FSC Code: 5331
MPN: 8160012

5331-01-308-5866 (K-A1B-0685)

NIIN: 01-308-5866
In stock
NSN: 5331-01-308-5866
FSC Code: 5331
MPN: KA1B0685

5331-01-310-5917 (K-A1B-0698)

NIIN: 01-310-5917
In stock
NSN: 5331-01-310-5917
FSC Code: 5331
MPN: KA1B0698

5331-22-269-2738 (81512-12-0677)

NIIN: 22-269-2738
In stock
NSN: 5331-22-269-2738
FSC Code: 5331
MPN: 81512120677

5331-01-278-7631 (K89)

NIIN: 01-278-7631
In stock
NSN: 5331-01-278-7631
FSC Code: 5331
MPN: K89

5331-00-291-5972 (K887824SUB11PT15)

NIIN: 00-291-5972
In stock
NSN: 5331-00-291-5972
FSC Code: 5331
MPN: K887824SUB11PT15

5331-01-278-7630 (K88)

NIIN: 01-278-7630
In stock
NSN: 5331-01-278-7630
FSC Code: 5331
MPN: K88

5331-01-277-0157 (K87)

NIIN: 01-277-0157
In stock
NSN: 5331-01-277-0157
FSC Code: 5331
MPN: K87

5331-01-278-7629 (K86)

NIIN: 01-278-7629
In stock
NSN: 5331-01-278-7629
FSC Code: 5331
MPN: K86

5331-01-278-7628 (K85)

NIIN: 01-278-7628
In stock
NSN: 5331-01-278-7628
FSC Code: 5331
MPN: K85

5331-01-275-9428 (K83)

NIIN: 01-275-9428
In stock
NSN: 5331-01-275-9428
FSC Code: 5331
MPN: K83

5331-01-278-7627 (K82)

NIIN: 01-278-7627
In stock
NSN: 5331-01-278-7627
FSC Code: 5331
MPN: K82

5331-01-277-0156 (K75)

NIIN: 01-277-0156
In stock
NSN: 5331-01-277-0156
FSC Code: 5331
MPN: K75

5331-01-278-7626 (K76)

NIIN: 01-278-7626
In stock
NSN: 5331-01-278-7626
FSC Code: 5331
MPN: K76

5331-01-498-9260 (M25988-155L1077-75)

NIIN: 01-498-9260
In stock
NSN: 5331-01-498-9260
FSC Code: 5331
MPN: M25988155L107775

5331-01-498-0720 (M25988-906L1077-75)

NIIN: 01-498-0720
In stock
NSN: 5331-01-498-0720
FSC Code: 5331
MPN: M25988906L107775

5331-01-498-0724 (M25988-908L1077-75)

NIIN: 01-498-0724
In stock
NSN: 5331-01-498-0724
FSC Code: 5331
MPN: M25988908L107775

5331-01-498-0718 (M25988-903L1077-75)

NIIN: 01-498-0718
In stock
NSN: 5331-01-498-0718
FSC Code: 5331
MPN: M25988903L107775

5331-01-498-0719 (M25988-904L1077-75)

NIIN: 01-498-0719
In stock
NSN: 5331-01-498-0719
FSC Code: 5331
MPN: M25988904L107775

5331-01-498-0725 (M25988-909L1077-75)

NIIN: 01-498-0725
In stock
NSN: 5331-01-498-0725
FSC Code: 5331
MPN: M25988909L107775

5331-01-498-0723 (M25988-907L1077-75)

NIIN: 01-498-0723
In stock
NSN: 5331-01-498-0723
FSC Code: 5331
MPN: M25988907L107775

5331-01-498-0727 (M25988-920L1077-75)

NIIN: 01-498-0727
In stock
NSN: 5331-01-498-0727
FSC Code: 5331
MPN: M25988920L107775

5331-01-498-0716 (M25988-902L1077-75)

NIIN: 01-498-0716
In stock
NSN: 5331-01-498-0716
FSC Code: 5331
MPN: M25988902L107775

5331-01-498-0708 (M25988-017L1077-75)

NIIN: 01-498-0708
In stock
NSN: 5331-01-498-0708
FSC Code: 5331
MPN: M25988017L107775

5331-01-498-0710 (M25988-018L1077-75)

NIIN: 01-498-0710
In stock
NSN: 5331-01-498-0710
FSC Code: 5331
MPN: M25988018L107775

5331-01-498-0697 (M25988-015L1077-75)

NIIN: 01-498-0697
In stock
NSN: 5331-01-498-0697
FSC Code: 5331
MPN: M25988015L107775

5331-01-498-0714 (M25988-111L1077-75)

NIIN: 01-498-0714
In stock
NSN: 5331-01-498-0714
FSC Code: 5331
MPN: M25988111L107775

5331-01-279-2224 (K74)

NIIN: 01-279-2224
In stock
NSN: 5331-01-279-2224
FSC Code: 5331
MPN: K74

5331-01-498-0715 (M25988-127L1077-75)

NIIN: 01-498-0715
In stock
NSN: 5331-01-498-0715
FSC Code: 5331
MPN: M25988127L107775

5331-01-504-3449 (M25988-005L1077-75)

NIIN: 01-504-3449
In stock
NSN: 5331-01-504-3449
FSC Code: 5331
MPN: M25988005L107775

5331-01-498-0706 (M25988-011L1077-75)

NIIN: 01-498-0706
In stock
NSN: 5331-01-498-0706
FSC Code: 5331
MPN: M25988011L107775

5331-01-498-0701 (M25988-007L1077-75)

NIIN: 01-498-0701
In stock
NSN: 5331-01-498-0701
FSC Code: 5331
MPN: M25988007L107775

5331-01-498-0712 (M25988-031L1077-75)

NIIN: 01-498-0712
In stock
NSN: 5331-01-498-0712
FSC Code: 5331
MPN: M25988031L107775

5331-01-498-0707 (M25988-013L1077-75)

NIIN: 01-498-0707
In stock
NSN: 5331-01-498-0707
FSC Code: 5331
MPN: M25988013L107775

5331-01-498-0703 (M25988-010L1077-75)

NIIN: 01-498-0703
In stock
NSN: 5331-01-498-0703
FSC Code: 5331
MPN: M25988010L107775

5331-01-498-0699 (M25988-006L1077-75)

NIIN: 01-498-0699
In stock
NSN: 5331-01-498-0699
FSC Code: 5331
MPN: M25988006L107775