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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.

5331-00-869-6562 (9M4217)

NIIN: 00-869-6562
In stock
NSN: 5331-00-869-6562
FSC Code: 5331
MPN: 9M4217

5331-00-006-8397 (9M4218)

NIIN: 00-006-8397
In stock
NSN: 5331-00-006-8397
FSC Code: 5331
MPN: 9M4218

5331-00-951-1574 (9M2610)

NIIN: 00-951-1574
In stock
NSN: 5331-00-951-1574
FSC Code: 5331
MPN: 9M2610

5331-00-932-1053 (9M2092)

NIIN: 00-932-1053
In stock
NSN: 5331-00-932-1053
FSC Code: 5331
MPN: 9M2092

5331-01-350-4379 (5-39MIL1-0803-14)

NIIN: 01-350-4379
In stock
NSN: 5331-01-350-4379
FSC Code: 5331
MPN: 539MIL1080314

5331-01-349-9406 (5-39MIL1-1204-14)

NIIN: 01-349-9406
In stock
NSN: 5331-01-349-9406
FSC Code: 5331
MPN: 539MIL1120414

5331-01-350-4378 (5-39MIL1-1604-14)

NIIN: 01-350-4378
In stock
NSN: 5331-01-350-4378
FSC Code: 5331
MPN: 539MIL1160414

5331-01-350-5343 (5-39MIL1-1003-14)

NIIN: 01-350-5343
In stock
NSN: 5331-01-350-5343
FSC Code: 5331
MPN: 539MIL1100314

5331-01-409-1712 (5-225N674-70)

NIIN: 01-409-1712
In stock
NSN: 5331-01-409-1712
FSC Code: 5331
MPN: 5225N67470

5331-01-466-5104 (522-4674923)

NIIN: 01-466-5104
In stock
NSN: 5331-01-466-5104
FSC Code: 5331
MPN: 5224674923

5331-01-095-1255 (9J5686)

NIIN: 01-095-1255
In stock
NSN: 5331-01-095-1255
FSC Code: 5331
MPN: 9J5686

5331-01-333-5196 (9J3497)

NIIN: 01-333-5196
In stock
NSN: 5331-01-333-5196
FSC Code: 5331
MPN: 9J3497

5331-00-893-7271 (9H4557)

NIIN: 00-893-7271
In stock
NSN: 5331-00-893-7271
FSC Code: 5331
MPN: 9H4557

5331-01-494-8897 (5-223V747-75)

NIIN: 01-494-8897
In stock
NSN: 5331-01-494-8897
FSC Code: 5331
MPN: 5223V74775

5331-00-999-5893 (9H0846)

NIIN: 00-999-5893
In stock
NSN: 5331-00-999-5893
FSC Code: 5331
MPN: 9H0846

5331-01-147-5900 (9D1906-3)

NIIN: 01-147-5900
In stock
NSN: 5331-01-147-5900
FSC Code: 5331
MPN: 9D19063

5331-01-414-8155 (5-212S604-70)

NIIN: 01-414-8155
In stock
NSN: 5331-01-414-8155
FSC Code: 5331
MPN: 5212S60470

5331-01-334-8464 (9A-125L)

NIIN: 01-334-8464
In stock
NSN: 5331-01-334-8464
FSC Code: 5331
MPN: 9A125L

5331-01-389-0047 (52329560-VITON)

NIIN: 01-389-0047
In stock
NSN: 5331-01-389-0047
FSC Code: 5331
MPN: 52329560VITON

5331-01-371-4799 (6499-354096-1)

NIIN: 01-371-4799
In stock
NSN: 5331-01-371-4799
FSC Code: 5331
MPN: 64993540961

5331-01-516-3725 (5-209N0674-70)

NIIN: 01-516-3725
In stock
NSN: 5331-01-516-3725
FSC Code: 5331
MPN: 5209N067470

5331-01-260-5670 (99CC509-402)

NIIN: 01-260-5670
In stock
NSN: 5331-01-260-5670
FSC Code: 5331
MPN: 99CC509402

5331-01-186-4346 (999R0142)

NIIN: 01-186-4346
In stock
NSN: 5331-01-186-4346
FSC Code: 5331
MPN: 999R0142

5331-01-223-6775 (999H0097)

NIIN: 01-223-6775
In stock
NSN: 5331-01-223-6775
FSC Code: 5331
MPN: 999H0097

5331-01-298-4744 (999F0762)

NIIN: 01-298-4744
In stock
NSN: 5331-01-298-4744
FSC Code: 5331
MPN: 999F0762

5331-01-298-8058 (999F0444)

NIIN: 01-298-8058
In stock
NSN: 5331-01-298-8058
FSC Code: 5331
MPN: 999F0444

5331-01-236-4371 (99-9781-012)

NIIN: 01-236-4371
In stock
NSN: 5331-01-236-4371
FSC Code: 5331
MPN: 999781012

5331-01-464-2406 (520-10057-1)

NIIN: 01-464-2406
In stock
NSN: 5331-01-464-2406
FSC Code: 5331
MPN: 520100571

5331-01-443-3443 (5200-029087)

NIIN: 01-443-3443
In stock
NSN: 5331-01-443-3443
FSC Code: 5331
MPN: 5200029087

5331-01-394-3568 (5200-021157)

NIIN: 01-394-3568
In stock
NSN: 5331-01-394-3568
FSC Code: 5331
MPN: 5200021157

5331-01-442-6954 (5200-020327)

NIIN: 01-442-6954
In stock
NSN: 5331-01-442-6954
FSC Code: 5331
MPN: 5200020327

5331-01-555-7623 (5331PL1038180)

NIIN: 01-555-7623
In stock
NSN: 5331-01-555-7623
FSC Code: 5331
MPN: 5331PL1038180

5331-01-442-6957 (5200-021107)

NIIN: 01-442-6957
In stock
NSN: 5331-01-442-6957
FSC Code: 5331
MPN: 5200021107

5331-01-492-5873 (5200-021277)

NIIN: 01-492-5873
In stock
NSN: 5331-01-492-5873
FSC Code: 5331
MPN: 5200021277

5331-01-442-6953 (5200-020057)

NIIN: 01-442-6953
In stock
NSN: 5331-01-442-6953
FSC Code: 5331
MPN: 5200020057

5331-01-442-6955 (5200-020217)

NIIN: 01-442-6955
In stock
NSN: 5331-01-442-6955
FSC Code: 5331
MPN: 5200020217

5331-00-066-4552 (998990-108ES)

NIIN: 00-066-4552
In stock
NSN: 5331-00-066-4552
FSC Code: 5331
MPN: 998990108ES

5331-00-171-4285 (998990-040ES)

NIIN: 00-171-4285
In stock
NSN: 5331-00-171-4285
FSC Code: 5331
MPN: 998990040ES

5331-01-174-2676 (9987M86P02)

NIIN: 01-174-2676
In stock
NSN: 5331-01-174-2676
FSC Code: 5331
MPN: 9987M86P02

5331-01-173-8535 (9987M86P01)

NIIN: 01-173-8535
In stock
NSN: 5331-01-173-8535
FSC Code: 5331
MPN: 9987M86P01

5331-00-846-1994 (998776-7)

NIIN: 00-846-1994
In stock
NSN: 5331-00-846-1994
FSC Code: 5331
MPN: 9987767

5331-01-570-3268 (51M7096)

NIIN: 01-570-3268
In stock
NSN: 5331-01-570-3268
FSC Code: 5331
MPN: 51M7096

5331-01-460-2668 (51M7043)

NIIN: 01-460-2668
In stock
NSN: 5331-01-460-2668
FSC Code: 5331
MPN: 51M7043

5331-01-510-0076 (51M7045)

NIIN: 01-510-0076
In stock
NSN: 5331-01-510-0076
FSC Code: 5331
MPN: 51M7045

5331-01-550-6810 (51M7048)

NIIN: 01-550-6810
In stock
NSN: 5331-01-550-6810
FSC Code: 5331
MPN: 51M7048

5331-01-570-3131 (51M7095)

NIIN: 01-570-3131
In stock
NSN: 5331-01-570-3131
FSC Code: 5331
MPN: 51M7095

5331-01-549-9697 (51M7045)

NIIN: 01-549-9697
In stock
NSN: 5331-01-549-9697
FSC Code: 5331
MPN: 51M7045

5331-01-531-1278 (51M7049)

NIIN: 01-531-1278
In stock
NSN: 5331-01-531-1278
FSC Code: 5331
MPN: 51M7049