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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.

5331-01-178-1762 (954521-6)

NIIN: 01-178-1762
In stock
NSN: 5331-01-178-1762
FSC Code: 5331
MPN: 9545216

5331-01-024-9767 (95450V2)

NIIN: 01-024-9767
In stock
NSN: 5331-01-024-9767
FSC Code: 5331
MPN: 95450V2

5331-01-478-2488 (V0747-75 5-058)

NIIN: 01-478-2488
In stock
NSN: 5331-01-478-2488
FSC Code: 5331
MPN: V0747755058

5331-01-480-7850 (5-058V709-90)

NIIN: 01-480-7850
In stock
NSN: 5331-01-480-7850
FSC Code: 5331
MPN: 5058V70990

5331-00-802-0798 (9-54000-001)

NIIN: 00-802-0798
In stock
NSN: 5331-00-802-0798
FSC Code: 5331
MPN: 954000001

5331-00-443-1104 (9-540004-02)

NIIN: 00-443-1104
In stock
NSN: 5331-00-443-1104
FSC Code: 5331
MPN: 954000402

5331-01-457-9148 (5-056;)

NIIN: 01-457-9148
In stock
NSN: 5331-01-457-9148
FSC Code: 5331
MPN: 5056

5331-01-208-3768 (953553-013)

NIIN: 01-208-3768
In stock
NSN: 5331-01-208-3768
FSC Code: 5331
MPN: 953553013

5331-00-510-8381 (953542-5)

NIIN: 00-510-8381
In stock
NSN: 5331-00-510-8381
FSC Code: 5331
MPN: 9535425

5331-00-534-2170 (953542-8)

NIIN: 00-534-2170
In stock
NSN: 5331-00-534-2170
FSC Code: 5331
MPN: 9535428

5331-00-593-4484 (953542-12)

NIIN: 00-593-4484
In stock
NSN: 5331-00-593-4484
FSC Code: 5331
MPN: 95354212

5331-01-045-4257 (953541-22)

NIIN: 01-045-4257
In stock
NSN: 5331-01-045-4257
FSC Code: 5331
MPN: 95354122

5331-01-060-8188 (953541-130)

NIIN: 01-060-8188
In stock
NSN: 5331-01-060-8188
FSC Code: 5331
MPN: 953541130

5331-01-060-9612 (953541-18)

NIIN: 01-060-9612
In stock
NSN: 5331-01-060-9612
FSC Code: 5331
MPN: 95354118

5331-00-477-3588 (953541-125)

NIIN: 00-477-3588
In stock
NSN: 5331-00-477-3588
FSC Code: 5331
MPN: 953541125

5331-00-149-8818 (953523-8)

NIIN: 00-149-8818
In stock
NSN: 5331-00-149-8818
FSC Code: 5331
MPN: 9535238

5331-00-415-6803 (953523-9)

NIIN: 00-415-6803
In stock
NSN: 5331-00-415-6803
FSC Code: 5331
MPN: 9535239

5331-00-991-8377 (953520-6)

NIIN: 00-991-8377
In stock
NSN: 5331-00-991-8377
FSC Code: 5331
MPN: 9535206

5331-00-392-2552 (953524-7)

NIIN: 00-392-2552
In stock
NSN: 5331-00-392-2552
FSC Code: 5331
MPN: 9535247

5331-00-478-0670 (953523-7)

NIIN: 00-478-0670
In stock
NSN: 5331-00-478-0670
FSC Code: 5331
MPN: 9535237

5331-00-991-8375 (953520-12)

NIIN: 00-991-8375
In stock
NSN: 5331-00-991-8375
FSC Code: 5331
MPN: 95352012

5331-00-938-4289 (953519-9)

NIIN: 00-938-4289
In stock
NSN: 5331-00-938-4289
FSC Code: 5331
MPN: 9535199

5331-00-097-6893 (953520-16)

NIIN: 00-097-6893
In stock
NSN: 5331-00-097-6893
FSC Code: 5331
MPN: 95352016

5331-00-987-1925 (953520-20)

NIIN: 00-987-1925
In stock
NSN: 5331-00-987-1925
FSC Code: 5331
MPN: 95352020

5331-00-938-6853 (953519-7)

NIIN: 00-938-6853
In stock
NSN: 5331-00-938-6853
FSC Code: 5331
MPN: 9535197

5331-00-938-6851 (953519-270)

NIIN: 00-938-6851
In stock
NSN: 5331-00-938-6851
FSC Code: 5331
MPN: 953519270

5331-00-556-7436 (953519-4)

NIIN: 00-556-7436
In stock
NSN: 5331-00-556-7436
FSC Code: 5331
MPN: 9535194

5331-00-938-6852 (953519-28)

NIIN: 00-938-6852
In stock
NSN: 5331-00-938-6852
FSC Code: 5331
MPN: 95351928

5331-00-938-4283 (953519-21)

NIIN: 00-938-4283
In stock
NSN: 5331-00-938-4283
FSC Code: 5331
MPN: 95351921

5331-00-938-4286 (953519-24)

NIIN: 00-938-4286
In stock
NSN: 5331-00-938-4286
FSC Code: 5331
MPN: 95351924

5331-00-938-6850 (953519-25)

NIIN: 00-938-6850
In stock
NSN: 5331-00-938-6850
FSC Code: 5331
MPN: 95351925

5331-00-938-4282 (953519-17)

NIIN: 00-938-4282
In stock
NSN: 5331-00-938-4282
FSC Code: 5331
MPN: 95351917

5331-00-938-4284 (953519-22)

NIIN: 00-938-4284
In stock
NSN: 5331-00-938-4284
FSC Code: 5331
MPN: 95351922

5331-00-938-4285 (953519-23)

NIIN: 00-938-4285
In stock
NSN: 5331-00-938-4285
FSC Code: 5331
MPN: 95351923

5331-00-997-3282 (953519-139)

NIIN: 00-997-3282
In stock
NSN: 5331-00-997-3282
FSC Code: 5331
MPN: 953519139

5331-00-392-2502 (953519-136)

NIIN: 00-392-2502
In stock
NSN: 5331-00-392-2502
FSC Code: 5331
MPN: 953519136

5331-00-879-3866 (953519-20)

NIIN: 00-879-3866
In stock
NSN: 5331-00-879-3866
FSC Code: 5331
MPN: 95351920

5331-00-556-7435 (953519-19)

NIIN: 00-556-7435
In stock
NSN: 5331-00-556-7435
FSC Code: 5331
MPN: 95351919

5331-00-938-4281 (953519-16)

NIIN: 00-938-4281
In stock
NSN: 5331-00-938-4281
FSC Code: 5331
MPN: 95351916

5331-00-135-3352 (953519-18)

NIIN: 00-135-3352
In stock
NSN: 5331-00-135-3352
FSC Code: 5331
MPN: 95351918

5331-00-997-3284 (953519-15)

NIIN: 00-997-3284
In stock
NSN: 5331-00-997-3284
FSC Code: 5331
MPN: 95351915

5331-00-343-9973 (953519-138)

NIIN: 00-343-9973
In stock
NSN: 5331-00-343-9973
FSC Code: 5331
MPN: 953519138

5331-00-395-8032 (953519-135)

NIIN: 00-395-8032
In stock
NSN: 5331-00-395-8032
FSC Code: 5331
MPN: 953519135

5331-00-135-7680 (953519-133)

NIIN: 00-135-7680
In stock
NSN: 5331-00-135-7680
FSC Code: 5331
MPN: 953519133

5331-00-938-9284 (953519-127)

NIIN: 00-938-9284
In stock
NSN: 5331-00-938-9284
FSC Code: 5331
MPN: 953519127

5331-00-856-0829 (953519-132)

NIIN: 00-856-0829
In stock
NSN: 5331-00-856-0829
FSC Code: 5331
MPN: 953519132

5331-00-115-9404 (953519-11)

NIIN: 00-115-9404
In stock
NSN: 5331-00-115-9404
FSC Code: 5331
MPN: 95351911

5331-00-938-4279 (953519-131)

NIIN: 00-938-4279
In stock
NSN: 5331-00-938-4279
FSC Code: 5331
MPN: 953519131