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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.

5331-01-244-2117 (31440062-904)

NIIN: 01-244-2117
In stock
NSN: 5331-01-244-2117
FSC Code: 5331
MPN: 31440062904

5331-01-284-6653 (31440062-124)

NIIN: 01-284-6653
In stock
NSN: 5331-01-284-6653
FSC Code: 5331
MPN: 31440062124

5331-01-007-4913 (3-14C147-7)

NIIN: 01-007-4913
In stock
NSN: 5331-01-007-4913
FSC Code: 5331
MPN: 314C1477

5331-00-435-0446 (3-14E515-8)

NIIN: 00-435-0446
In stock
NSN: 5331-00-435-0446
FSC Code: 5331
MPN: 314E5158

5331-01-099-4704 (3-14N219-7)

NIIN: 01-099-4704
In stock
NSN: 5331-01-099-4704
FSC Code: 5331
MPN: 314N2197

5331-01-009-6733 (31500-7029)

NIIN: 01-009-6733
In stock
NSN: 5331-01-009-6733
FSC Code: 5331
MPN: 315007029

5331-01-508-4249 (1051110P-1)

NIIN: 01-508-4249
In stock
NSN: 5331-01-508-4249
FSC Code: 5331
MPN: 1051110P1

5331-01-459-0652 (10520-036)

NIIN: 01-459-0652
In stock
NSN: 5331-01-459-0652
FSC Code: 5331
MPN: 10520036

5331-01-293-8698 (315-10031-3001)

NIIN: 01-293-8698
In stock
NSN: 5331-01-293-8698
FSC Code: 5331
MPN: 315100313001

5331-01-058-4562 (31525-003)

NIIN: 01-058-4562
In stock
NSN: 5331-01-058-4562
FSC Code: 5331
MPN: 31525003

5331-01-182-5513 (31525-20)

NIIN: 01-182-5513
In stock
NSN: 5331-01-182-5513
FSC Code: 5331
MPN: 3152520

5331-01-182-5515 (31525-9)

NIIN: 01-182-5515
In stock
NSN: 5331-01-182-5515
FSC Code: 5331
MPN: 315259

5331-01-277-2191 (315349-000)

NIIN: 01-277-2191
In stock
NSN: 5331-01-277-2191
FSC Code: 5331
MPN: 315349000

5331-01-232-2373 (31544-4CSF7-1FITEM12)

NIIN: 01-232-2373
In stock
NSN: 5331-01-232-2373
FSC Code: 5331
MPN: 315444CSF71FITEM12

5331-00-531-4566 (3-1549-3-26)

NIIN: 00-531-4566
In stock
NSN: 5331-00-531-4566
FSC Code: 5331
MPN: 31549326

5331-00-263-4593 (315S17)

NIIN: 00-263-4593
In stock
NSN: 5331-00-263-4593
FSC Code: 5331
MPN: 315S17

5331-00-263-4584 (315S21)

NIIN: 00-263-4584
In stock
NSN: 5331-00-263-4584
FSC Code: 5331
MPN: 315S21

5331-00-263-4588 (315S9)

NIIN: 00-263-4588
In stock
NSN: 5331-00-263-4588
FSC Code: 5331
MPN: 315S9

5331-00-263-4599 (315S5)

NIIN: 00-263-4599
In stock
NSN: 5331-00-263-4599
FSC Code: 5331
MPN: 315S5

5331-00-263-4601 (315S3)

NIIN: 00-263-4601
In stock
NSN: 5331-00-263-4601
FSC Code: 5331
MPN: 315S3

5331-00-291-3287 (315S26)

NIIN: 00-291-3287
In stock
NSN: 5331-00-291-3287
FSC Code: 5331
MPN: 315S26

5331-01-283-7472 (3160-7)

NIIN: 01-283-7472
In stock
NSN: 5331-01-283-7472
FSC Code: 5331
MPN: 31607

5331-01-313-7872 (316135-01-1)

NIIN: 01-313-7872
In stock
NSN: 5331-01-313-7872
FSC Code: 5331
MPN: 316135011

5331-01-201-0153 (316135-08-9)

NIIN: 01-201-0153
In stock
NSN: 5331-01-201-0153
FSC Code: 5331
MPN: 316135089

5331-01-447-0791 (1-055)

NIIN: 01-447-0791
In stock
NSN: 5331-01-447-0791
FSC Code: 5331
MPN: 1055

5331-01-541-3969 (2-017C1124-70)

NIIN: 01-541-3969
In stock
NSN: 5331-01-541-3969
FSC Code: 5331
MPN: 2017C112470

5331-01-549-8141 (10554998-3)

NIIN: 01-549-8141
In stock
NSN: 5331-01-549-8141
FSC Code: 5331
MPN: 105549983

5331-01-392-3462 (1055V)

NIIN: 01-392-3462
In stock
NSN: 5331-01-392-3462
FSC Code: 5331
MPN: 1055V

5331-01-521-1348 (10561-09)

NIIN: 01-521-1348
In stock
NSN: 5331-01-521-1348
FSC Code: 5331
MPN: 1056109

5331-01-466-0695 (10561-11)

NIIN: 01-466-0695
In stock
NSN: 5331-01-466-0695
FSC Code: 5331
MPN: 1056111

5331-01-195-8878 (3169-N-2EP)

NIIN: 01-195-8878
In stock
NSN: 5331-01-195-8878
FSC Code: 5331
MPN: 3169N2EP

5331-01-024-6302 (3-16E540-8)

NIIN: 01-024-6302
In stock
NSN: 5331-01-024-6302
FSC Code: 5331
MPN: 316E5408

5331-00-973-8160 (3-16L449-6)

NIIN: 00-973-8160
In stock
NSN: 5331-00-973-8160
FSC Code: 5331
MPN: 316L4496

5331-00-086-2460 (3-16E515-8)

NIIN: 00-086-2460
In stock
NSN: 5331-00-086-2460
FSC Code: 5331
MPN: 316E5158

5331-00-801-8530 (3-16TLC)

NIIN: 00-801-8530
In stock
NSN: 5331-00-801-8530
FSC Code: 5331
MPN: 316TLC

5331-01-106-4334 (317044223PIECE12)

NIIN: 01-106-4334
In stock
NSN: 5331-01-106-4334
FSC Code: 5331
MPN: 317044223PIECE12

5331-01-313-7871 (317303-26-0)

NIIN: 01-313-7871
In stock
NSN: 5331-01-313-7871
FSC Code: 5331
MPN: 317303260

5331-01-201-0151 (317303-12-0)

NIIN: 01-201-0151
In stock
NSN: 5331-01-201-0151
FSC Code: 5331
MPN: 317303120

5331-01-129-0632 (3-17330)

NIIN: 01-129-0632
In stock
NSN: 5331-01-129-0632
FSC Code: 5331
MPN: 317330

5331-01-258-8239 (3174291-1)

NIIN: 01-258-8239
In stock
NSN: 5331-01-258-8239
FSC Code: 5331
MPN: 31742911

5331-01-258-8241 (3174291-3)

NIIN: 01-258-8241
In stock
NSN: 5331-01-258-8241
FSC Code: 5331
MPN: 31742913

5331-01-258-8240 (3174291-2)

NIIN: 01-258-8240
In stock
NSN: 5331-01-258-8240
FSC Code: 5331
MPN: 31742912

5331-01-258-8242 (3174291-4)

NIIN: 01-258-8242
In stock
NSN: 5331-01-258-8242
FSC Code: 5331
MPN: 31742914

5331-01-200-6007 (317443-03-8)

NIIN: 01-200-6007
In stock
NSN: 5331-01-200-6007
FSC Code: 5331
MPN: 317443038

5331-01-191-0282 (31-75102-3020-4)

NIIN: 01-191-0282
In stock
NSN: 5331-01-191-0282
FSC Code: 5331
MPN: 317510230204

5331-01-191-0283 (31-75102-3020-4)

NIIN: 01-191-0283
In stock
NSN: 5331-01-191-0283
FSC Code: 5331
MPN: 317510230204

5331-01-190-7441 (31-75102-3020-4)

NIIN: 01-190-7441
In stock
NSN: 5331-01-190-7441
FSC Code: 5331
MPN: 317510230204

5331-01-190-7442 (31-75102-3020-4)

NIIN: 01-190-7442
In stock
NSN: 5331-01-190-7442
FSC Code: 5331
MPN: 317510230204