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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.

5331-01-439-6485 (1496-020)

NIIN: 01-439-6485
In stock
NSN: 5331-01-439-6485
FSC Code: 5331
MPN: 1496020

5331-01-439-6484 (1496-023)

NIIN: 01-439-6484
In stock
NSN: 5331-01-439-6484
FSC Code: 5331
MPN: 1496023

5331-01-439-6486 (1496-013)

NIIN: 01-439-6486
In stock
NSN: 5331-01-439-6486
FSC Code: 5331
MPN: 1496013

5331-99-416-4577 (202-740-9775)

NIIN: 99-416-4577
In stock
NSN: 5331-99-416-4577
FSC Code: 5331
MPN: 2027409775

5331-01-358-0556 (14949-3)

NIIN: 01-358-0556
In stock
NSN: 5331-01-358-0556
FSC Code: 5331
MPN: 149493

5331-01-358-0558 (14949-12)

NIIN: 01-358-0558
In stock
NSN: 5331-01-358-0558
FSC Code: 5331
MPN: 1494912

5331-01-358-0557 (14949-10)

NIIN: 01-358-0557
In stock
NSN: 5331-01-358-0557
FSC Code: 5331
MPN: 1494910

5331-01-474-2028 (149-4291)

NIIN: 01-474-2028
In stock
NSN: 5331-01-474-2028
FSC Code: 5331
MPN: 1494291

5331-01-474-2025 (149-4289)

NIIN: 01-474-2025
In stock
NSN: 5331-01-474-2025
FSC Code: 5331
MPN: 1494289

5331-01-206-1278 (42710P005)

NIIN: 01-206-1278
In stock
NSN: 5331-01-206-1278
FSC Code: 5331
MPN: 42710P005

5331-00-415-8701 (426V316)

NIIN: 00-415-8701
In stock
NSN: 5331-00-415-8701
FSC Code: 5331
MPN: 426V316

5331-00-415-8678 (426V310)

NIIN: 00-415-8678
In stock
NSN: 5331-00-415-8678
FSC Code: 5331
MPN: 426V310

5331-00-599-2142 (4268-45REVAPC26SH2)

NIIN: 00-599-2142
In stock
NSN: 5331-00-599-2142
FSC Code: 5331
MPN: 426845REVAPC26SH2

5331-00-663-7685 (426-6709-1439297ALTA)

NIIN: 00-663-7685
In stock
NSN: 5331-00-663-7685
FSC Code: 5331
MPN: 42667091439297ALTA

5331-01-526-5160 (149-2091)

NIIN: 01-526-5160
In stock
NSN: 5331-01-526-5160
FSC Code: 5331
MPN: 1492091

5331-01-550-8205 (149-130)

NIIN: 01-550-8205
In stock
NSN: 5331-01-550-8205
FSC Code: 5331
MPN: 149130

5331-01-311-6969 (425MTE-160)

NIIN: 01-311-6969
In stock
NSN: 5331-01-311-6969
FSC Code: 5331
MPN: 425MTE160

5331-01-557-7467 (148-8975)

NIIN: 01-557-7467
In stock
NSN: 5331-01-557-7467
FSC Code: 5331
MPN: 1488975

5331-01-554-7327 (148-8131)

NIIN: 01-554-7327
In stock
NSN: 5331-01-554-7327
FSC Code: 5331
MPN: 1488131

5331-01-554-7328 (148-8136)

NIIN: 01-554-7328
In stock
NSN: 5331-01-554-7328
FSC Code: 5331
MPN: 1488136

5331-01-523-8941 (148-7925)

NIIN: 01-523-8941
In stock
NSN: 5331-01-523-8941
FSC Code: 5331
MPN: 1487925

5331-14-383-6597 (148-59X6-99-31B6)

NIIN: 14-383-6597
In stock
NSN: 5331-14-383-6597
FSC Code: 5331
MPN: 14859X69931B6

5331-01-303-2169 (4252-366Y)

NIIN: 01-303-2169
In stock
NSN: 5331-01-303-2169
FSC Code: 5331
MPN: 4252366Y

5331-01-129-4338 (425070PIECE)

NIIN: 01-129-4338
In stock
NSN: 5331-01-129-4338
FSC Code: 5331
MPN: 425070PIECE

5331-00-881-9973 (425005-8)

NIIN: 00-881-9973
In stock
NSN: 5331-00-881-9973
FSC Code: 5331
MPN: 4250058

5331-00-064-4386 (425005-14)

NIIN: 00-064-4386
In stock
NSN: 5331-00-064-4386
FSC Code: 5331
MPN: 42500514

5331-00-060-4687 (425005-12)

NIIN: 00-060-4687
In stock
NSN: 5331-00-060-4687
FSC Code: 5331
MPN: 42500512

5331-00-137-3489 (425-00105)

NIIN: 00-137-3489
In stock
NSN: 5331-00-137-3489
FSC Code: 5331
MPN: 42500105

5331-00-404-6300 (425-00018)

NIIN: 00-404-6300
In stock
NSN: 5331-00-404-6300
FSC Code: 5331
MPN: 42500018

5331-01-452-0626 (1481J92ITEM23(EP))

NIIN: 01-452-0626
In stock
NSN: 5331-01-452-0626
FSC Code: 5331
MPN: 1481J92ITEM23EP

5331-01-399-5268 (1481J92ITEM23(EP))

NIIN: 01-399-5268
In stock
NSN: 5331-01-399-5268
FSC Code: 5331
MPN: 1481J92ITEM23EP

5331-00-825-9236 (424829-9)

NIIN: 00-825-9236
In stock
NSN: 5331-00-825-9236
FSC Code: 5331
MPN: 4248299

5331-01-208-2919 (424818-1)

NIIN: 01-208-2919
In stock
NSN: 5331-01-208-2919
FSC Code: 5331
MPN: 4248181

5331-01-266-2506 (424818-2)

NIIN: 01-266-2506
In stock
NSN: 5331-01-266-2506
FSC Code: 5331
MPN: 4248182

5331-01-213-6800 (4-2475-3-1)

NIIN: 01-213-6800
In stock
NSN: 5331-01-213-6800
FSC Code: 5331
MPN: 4247531

5331-01-437-6986 (AMS-P-83461/M83461/1-393)

NIIN: 01-437-6986
In stock
NSN: 5331-01-437-6986
FSC Code: 5331
MPN: AMSP83461M834611393

5331-01-453-2862 (S14778-005)

NIIN: 01-453-2862
In stock
NSN: 5331-01-453-2862
FSC Code: 5331
MPN: S14778005

5331-01-439-0881 (1-4772U-P028)

NIIN: 01-439-0881
In stock
NSN: 5331-01-439-0881
FSC Code: 5331
MPN: 14772UP028

5331-01-450-7022 (1-47-38.0)

NIIN: 01-450-7022
In stock
NSN: 5331-01-450-7022
FSC Code: 5331
MPN: 147380

5331-01-041-4680 (4237-59)

NIIN: 01-041-4680
In stock
NSN: 5331-01-041-4680
FSC Code: 5331
MPN: 423759

5331-01-263-2688 (423-700-045)

NIIN: 01-263-2688
In stock
NSN: 5331-01-263-2688
FSC Code: 5331
MPN: 423700045

5331-01-263-8132 (423-700-044)

NIIN: 01-263-8132
In stock
NSN: 5331-01-263-8132
FSC Code: 5331
MPN: 423700044

5331-00-663-6847 (42316-8)

NIIN: 00-663-6847
In stock
NSN: 5331-00-663-6847
FSC Code: 5331
MPN: 423168

5331-01-130-0474 (4231-4)

NIIN: 01-130-0474
In stock
NSN: 5331-01-130-0474
FSC Code: 5331
MPN: 42314

5331-01-265-6697 (42311S)

NIIN: 01-265-6697
In stock
NSN: 5331-01-265-6697
FSC Code: 5331
MPN: 42311S

5331-01-182-5500 (4230-005-01)

NIIN: 01-182-5500
In stock
NSN: 5331-01-182-5500
FSC Code: 5331
MPN: 423000501

5331-01-301-8843 (42277E596)

NIIN: 01-301-8843
In stock
NSN: 5331-01-301-8843
FSC Code: 5331
MPN: 42277E596

5331-00-425-2784 (422673PC10)

NIIN: 00-425-2784
In stock
NSN: 5331-00-425-2784
FSC Code: 5331
MPN: 422673PC10