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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.

5331-01-272-2585 (M25988/4-136)

NIIN: 01-272-2585
In stock
NSN: 5331-01-272-2585
FSC Code: 5331
MPN: M259884136

5331-01-129-2013 (M25988/4-135)

NIIN: 01-129-2013
In stock
NSN: 5331-01-129-2013
FSC Code: 5331
MPN: M259884135

5331-01-272-2584 (M25988/4-048)

NIIN: 01-272-2584
In stock
NSN: 5331-01-272-2584
FSC Code: 5331
MPN: M259884048

5331-01-054-2591 (M25988/4-042)

NIIN: 01-054-2591
In stock
NSN: 5331-01-054-2591
FSC Code: 5331
MPN: M259884042

5331-01-267-7409 (M25988/4-039)

NIIN: 01-267-7409
In stock
NSN: 5331-01-267-7409
FSC Code: 5331
MPN: M259884039

5331-01-189-8268 (M25988/4-029)

NIIN: 01-189-8268
In stock
NSN: 5331-01-189-8268
FSC Code: 5331
MPN: M259884029

5331-01-006-3934 (M25988/4-030)

NIIN: 01-006-3934
In stock
NSN: 5331-01-006-3934
FSC Code: 5331
MPN: M259884030

5331-01-208-3676 (M25988/3-359)

NIIN: 01-208-3676
In stock
NSN: 5331-01-208-3676
FSC Code: 5331
MPN: M259883359

5331-01-227-4049 (M25988/3-430)

NIIN: 01-227-4049
In stock
NSN: 5331-01-227-4049
FSC Code: 5331
MPN: M259883430

5331-01-129-3151 (M25988/3-267)

NIIN: 01-129-3151
In stock
NSN: 5331-01-129-3151
FSC Code: 5331
MPN: M259883267

5331-01-149-5967 (M25988/3-255)

NIIN: 01-149-5967
In stock
NSN: 5331-01-149-5967
FSC Code: 5331
MPN: M259883255

5331-01-090-6792 (M25988/3-222)

NIIN: 01-090-6792
In stock
NSN: 5331-01-090-6792
FSC Code: 5331
MPN: M259883222

5331-01-129-9439 (M25988/3-167)

NIIN: 01-129-9439
In stock
NSN: 5331-01-129-9439
FSC Code: 5331
MPN: M259883167

5331-01-130-9660 (M25988/3-165)

NIIN: 01-130-9660
In stock
NSN: 5331-01-130-9660
FSC Code: 5331
MPN: M259883165

5331-01-132-0269 (M25988/3-131)

NIIN: 01-132-0269
In stock
NSN: 5331-01-132-0269
FSC Code: 5331
MPN: M259883131

5331-01-369-7318 (865873-01)

NIIN: 01-369-7318
In stock
NSN: 5331-01-369-7318
FSC Code: 5331
MPN: 86587301

5331-01-374-4468 (865876-01)

NIIN: 01-374-4468
In stock
NSN: 5331-01-374-4468
FSC Code: 5331
MPN: 86587601

5331-01-132-8222 (M25988/3-129)

NIIN: 01-132-8222
In stock
NSN: 5331-01-132-8222
FSC Code: 5331
MPN: M259883129

5331-01-465-1902 (865869-01)

NIIN: 01-465-1902
In stock
NSN: 5331-01-465-1902
FSC Code: 5331
MPN: 86586901

5331-01-132-8223 (M25988/3-121)

NIIN: 01-132-8223
In stock
NSN: 5331-01-132-8223
FSC Code: 5331
MPN: M259883121

5331-01-130-9659 (M25988/3-040)

NIIN: 01-130-9659
In stock
NSN: 5331-01-130-9659
FSC Code: 5331
MPN: M259883040

5331-01-282-8209 (M25988/2-910)

NIIN: 01-282-8209
In stock
NSN: 5331-01-282-8209
FSC Code: 5331
MPN: M259882910

5331-01-331-9712 (M25988/2-907)

NIIN: 01-331-9712
In stock
NSN: 5331-01-331-9712
FSC Code: 5331
MPN: M259882907

5331-01-079-6579 (M25988/2-914)

NIIN: 01-079-6579
In stock
NSN: 5331-01-079-6579
FSC Code: 5331
MPN: M259882914

5331-00-421-9429 (M25988/2-237)

NIIN: 00-421-9429
In stock
NSN: 5331-00-421-9429
FSC Code: 5331
MPN: M259882237

5331-01-324-7204 (M25988/2-924)

NIIN: 01-324-7204
In stock
NSN: 5331-01-324-7204
FSC Code: 5331
MPN: M259882924

5331-01-083-6506 (M25988/2-928)

NIIN: 01-083-6506
In stock
NSN: 5331-01-083-6506
FSC Code: 5331
MPN: M259882928

5331-01-080-2998 (M25988/2-918)

NIIN: 01-080-2998
In stock
NSN: 5331-01-080-2998
FSC Code: 5331
MPN: M259882918

5331-01-087-1198 (M25988/2-905)

NIIN: 01-087-1198
In stock
NSN: 5331-01-087-1198
FSC Code: 5331
MPN: M259882905

5331-01-083-4126 (M25988/2-912)

NIIN: 01-083-4126
In stock
NSN: 5331-01-083-4126
FSC Code: 5331
MPN: M259882912

5331-00-240-3823 (M25988/2-279)

NIIN: 00-240-3823
In stock
NSN: 5331-00-240-3823
FSC Code: 5331
MPN: M259882279

5331-00-007-0102 (M25988/2-227)

NIIN: 00-007-0102
In stock
NSN: 5331-00-007-0102
FSC Code: 5331
MPN: M259882227

5331-01-322-8785 (M25988/2-233)

NIIN: 01-322-8785
In stock
NSN: 5331-01-322-8785
FSC Code: 5331
MPN: M259882233

5331-00-421-9431 (M25988/2-231)

NIIN: 00-421-9431
In stock
NSN: 5331-00-421-9431
FSC Code: 5331
MPN: M259882231

5331-00-413-2914 (M25988/2-233)

NIIN: 00-413-2914
In stock
NSN: 5331-00-413-2914
FSC Code: 5331
MPN: M259882233

5331-01-133-5857 (M25988/2-226)

NIIN: 01-133-5857
In stock
NSN: 5331-01-133-5857
FSC Code: 5331
MPN: M259882226

5331-00-179-9444 (M25988/2-204)

NIIN: 00-179-9444
In stock
NSN: 5331-00-179-9444
FSC Code: 5331
MPN: M259882204

5331-01-281-6512 (M25988/2-158)

NIIN: 01-281-6512
In stock
NSN: 5331-01-281-6512
FSC Code: 5331
MPN: M259882158

5331-01-282-5693 (M25988/2-218)

NIIN: 01-282-5693
In stock
NSN: 5331-01-282-5693
FSC Code: 5331
MPN: M259882218

5331-00-401-4801 (M25988/2-167)

NIIN: 00-401-4801
In stock
NSN: 5331-00-401-4801
FSC Code: 5331
MPN: M259882167

5331-01-133-5856 (M25988/2-222)

NIIN: 01-133-5856
In stock
NSN: 5331-01-133-5856
FSC Code: 5331
MPN: M259882222

5331-00-191-3558 (M25988/2-165)

NIIN: 00-191-3558
In stock
NSN: 5331-00-191-3558
FSC Code: 5331
MPN: M259882165

5331-00-419-0540 (M25988/2-153)

NIIN: 00-419-0540
In stock
NSN: 5331-00-419-0540
FSC Code: 5331
MPN: M259882153

5331-01-087-8826 (M25988/2-210)

NIIN: 01-087-8826
In stock
NSN: 5331-01-087-8826
FSC Code: 5331
MPN: M259882210

5331-01-079-7308 (M25988/2-154)

NIIN: 01-079-7308
In stock
NSN: 5331-01-079-7308
FSC Code: 5331
MPN: M259882154

5331-00-231-7702 (M25988/2-146)

NIIN: 00-231-7702
In stock
NSN: 5331-00-231-7702
FSC Code: 5331
MPN: M259882146

5331-01-282-3405 (M25988/2-135)

NIIN: 01-282-3405
In stock
NSN: 5331-01-282-3405
FSC Code: 5331
MPN: M259882135

5331-01-325-6041 (M25988/2-139)

NIIN: 01-325-6041
In stock
NSN: 5331-01-325-6041
FSC Code: 5331
MPN: M259882139