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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.

5331-00-580-1217 (2H3933)

NIIN: 00-580-1217
In stock
NSN: 5331-00-580-1217
FSC Code: 5331
MPN: 2H3933

5331-00-999-5501 (2H2665)

NIIN: 00-999-5501
In stock
NSN: 5331-00-999-5501
FSC Code: 5331
MPN: 2H2665

5331-01-546-3349 (100-385-2275)

NIIN: 01-546-3349
In stock
NSN: 5331-01-546-3349
FSC Code: 5331
MPN: 1003852275

5331-01-151-4092 (2GF58)

NIIN: 01-151-4092
In stock
NSN: 5331-01-151-4092
FSC Code: 5331
MPN: 2GF58

5331-01-151-4090 (2GF53)

NIIN: 01-151-4090
In stock
NSN: 5331-01-151-4090
FSC Code: 5331
MPN: 2GF53

5331-01-150-3971 (2GF8)

NIIN: 01-150-3971
In stock
NSN: 5331-01-150-3971
FSC Code: 5331
MPN: 2GF8

5331-01-150-3972 (2GF9)

NIIN: 01-150-3972
In stock
NSN: 5331-01-150-3972
FSC Code: 5331
MPN: 2GF9

5331-01-151-4091 (2GF56)

NIIN: 01-151-4091
In stock
NSN: 5331-01-151-4091
FSC Code: 5331
MPN: 2GF56

5331-01-041-4749 (2FX14)

NIIN: 01-041-4749
In stock
NSN: 5331-01-041-4749
FSC Code: 5331
MPN: 2FX14

5331-01-097-8844 (2FIG720)

NIIN: 01-097-8844
In stock
NSN: 5331-01-097-8844
FSC Code: 5331
MPN: 2FIG720

5331-01-504-9276 (10035-37)

NIIN: 01-504-9276
In stock
NSN: 5331-01-504-9276
FSC Code: 5331
MPN: 1003537

5331-01-503-5812 (10035-33-274)

NIIN: 01-503-5812
In stock
NSN: 5331-01-503-5812
FSC Code: 5331
MPN: 1003533274

5331-01-288-9395 (2EK509)

NIIN: 01-288-9395
In stock
NSN: 5331-01-288-9395
FSC Code: 5331
MPN: 2EK509

5331-01-485-2133 (1003503-2P33)

NIIN: 01-485-2133
In stock
NSN: 5331-01-485-2133
FSC Code: 5331
MPN: 10035032P33

5331-01-288-9394 (2EK508)

NIIN: 01-288-9394
In stock
NSN: 5331-01-288-9394
FSC Code: 5331
MPN: 2EK508

5331-99-950-8213 (FL1421AISSUE18ITEM74)

NIIN: 99-950-8213
In stock
NSN: 5331-99-950-8213
FSC Code: 5331
MPN: FL1421AISSUE18ITEM74

5331-01-362-6414 (100347-9000-056)

NIIN: 01-362-6414
In stock
NSN: 5331-01-362-6414
FSC Code: 5331
MPN: 1003479000056

5331-99-547-5349 (100347-9000-141)

NIIN: 99-547-5349
In stock
NSN: 5331-99-547-5349
FSC Code: 5331
MPN: 1003479000141

5331-01-292-7503 (2EK472)

NIIN: 01-292-7503
In stock
NSN: 5331-01-292-7503
FSC Code: 5331
MPN: 2EK472

5331-99-819-1056 (100-348-1911)

NIIN: 99-819-1056
In stock
NSN: 5331-99-819-1056
FSC Code: 5331
MPN: 1003481911

5331-99-541-4575 (100347-9000-123)

NIIN: 99-541-4575
In stock
NSN: 5331-99-541-4575
FSC Code: 5331
MPN: 1003479000123

5331-99-781-8676 (100347-9000-124)

NIIN: 99-781-8676
In stock
NSN: 5331-99-781-8676
FSC Code: 5331
MPN: 1003479000124

5331-99-768-7535 (100347-9000-118)

NIIN: 99-768-7535
In stock
NSN: 5331-99-768-7535
FSC Code: 5331
MPN: 1003479000118

5331-01-362-6415 (100347-9000-058)

NIIN: 01-362-6415
In stock
NSN: 5331-01-362-6415
FSC Code: 5331
MPN: 1003479000058

5331-01-291-6536 (2DY792)

NIIN: 01-291-6536
In stock
NSN: 5331-01-291-6536
FSC Code: 5331
MPN: 2DY792

5331-01-396-3995 (1003426-4)

NIIN: 01-396-3995
In stock
NSN: 5331-01-396-3995
FSC Code: 5331
MPN: 10034264

5331-01-287-7312 (2DR588)

NIIN: 01-287-7312
In stock
NSN: 5331-01-287-7312
FSC Code: 5331
MPN: 2DR588

5331-01-292-3141 (2DS944)

NIIN: 01-292-3141
In stock
NSN: 5331-01-292-3141
FSC Code: 5331
MPN: 2DS944

5331-01-214-1912 (2DS752)

NIIN: 01-214-1912
In stock
NSN: 5331-01-214-1912
FSC Code: 5331
MPN: 2DS752

5331-99-453-4489 (FL1554AISSUE3ITEM14)

NIIN: 99-453-4489
In stock
NSN: 5331-99-453-4489
FSC Code: 5331
MPN: FL1554AISSUE3ITEM14

5331-99-971-0516 (FL1421AISSUE18ITEM90)

NIIN: 99-971-0516
In stock
NSN: 5331-99-971-0516
FSC Code: 5331
MPN: FL1421AISSUE18ITEM90

5331-00-599-0505 (2DD143)

NIIN: 00-599-0505
In stock
NSN: 5331-00-599-0505
FSC Code: 5331
MPN: 2DD143

5331-01-097-6620 (2D8363)

NIIN: 01-097-6620
In stock
NSN: 5331-01-097-6620
FSC Code: 5331
MPN: 2D8363

5331-99-453-4485 (FL1434AISSUE20ITEM49)

NIIN: 99-453-4485
In stock
NSN: 5331-99-453-4485
FSC Code: 5331
MPN: FL1434AISSUE20ITEM49

5331-00-052-8850 (2D3-1597)

NIIN: 00-052-8850
In stock
NSN: 5331-00-052-8850
FSC Code: 5331
MPN: 2D31597

5331-01-483-0339 (100-310021-1)

NIIN: 01-483-0339
In stock
NSN: 5331-01-483-0339
FSC Code: 5331
MPN: 1003100211

5331-01-122-2466 (2D1692)

NIIN: 01-122-2466
In stock
NSN: 5331-01-122-2466
FSC Code: 5331
MPN: 2D1692

5331-01-315-2137 (2D)

NIIN: 01-315-2137
In stock
NSN: 5331-01-315-2137
FSC Code: 5331
MPN: 2D

5331-01-237-7553 (2CX433)

NIIN: 01-237-7553
In stock
NSN: 5331-01-237-7553
FSC Code: 5331
MPN: 2CX433

5331-01-225-4802 (2CR959)

NIIN: 01-225-4802
In stock
NSN: 5331-01-225-4802
FSC Code: 5331
MPN: 2CR959

5331-01-217-2873 (2CR899)

NIIN: 01-217-2873
In stock
NSN: 5331-01-217-2873
FSC Code: 5331
MPN: 2CR899

5331-01-568-7093 (1003-001J)

NIIN: 01-568-7093
In stock
NSN: 5331-01-568-7093
FSC Code: 5331
MPN: 1003001J

5331-01-568-7077 (1003-001J)

NIIN: 01-568-7077
In stock
NSN: 5331-01-568-7077
FSC Code: 5331
MPN: 1003001J

5331-01-568-7072 (1003-001J)

NIIN: 01-568-7072
In stock
NSN: 5331-01-568-7072
FSC Code: 5331
MPN: 1003001J

5331-01-573-0291 (1003-001J)

NIIN: 01-573-0291
In stock
NSN: 5331-01-573-0291
FSC Code: 5331
MPN: 1003001J

5331-01-227-3454 (2CS723)

NIIN: 01-227-3454
In stock
NSN: 5331-01-227-3454
FSC Code: 5331
MPN: 2CS723

5331-01-568-7090 (1003-001J)

NIIN: 01-568-7090
In stock
NSN: 5331-01-568-7090
FSC Code: 5331
MPN: 1003001J

5331-01-245-0734 (2CK582)

NIIN: 01-245-0734
In stock
NSN: 5331-01-245-0734
FSC Code: 5331
MPN: 2CK582