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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.

5331-01-221-9647 (0000-3170)

NIIN: 01-221-9647
In stock
NSN: 5331-01-221-9647
FSC Code: 5331
MPN: 00003170

5331-00-760-7168 (000047)

NIIN: 00-760-7168
In stock
NSN: 5331-00-760-7168
FSC Code: 5331
MPN: 000047

5331-01-293-0917 (000050555-000)

NIIN: 01-293-0917
In stock
NSN: 5331-01-293-0917
FSC Code: 5331
MPN: 000050555000

5331-01-244-3867 (00006110334547)

NIIN: 01-244-3867
In stock
NSN: 5331-01-244-3867
FSC Code: 5331
MPN: 00006110334547

5331-01-278-9483 (000073X0057)

NIIN: 01-278-9483
In stock
NSN: 5331-01-278-9483
FSC Code: 5331
MPN: 000073X0057

5331-01-267-1178 (000073X0206)

NIIN: 01-267-1178
In stock
NSN: 5331-01-267-1178
FSC Code: 5331
MPN: 000073X0206

5331-01-161-4498 (000073X0336)

NIIN: 01-161-4498
In stock
NSN: 5331-01-161-4498
FSC Code: 5331
MPN: 000073X0336

5331-01-284-7642 (000073X0037)

NIIN: 01-284-7642
In stock
NSN: 5331-01-284-7642
FSC Code: 5331
MPN: 000073X0037

5331-01-285-0479 (000073X0336)

NIIN: 01-285-0479
In stock
NSN: 5331-01-285-0479
FSC Code: 5331
MPN: 000073X0336

5331-01-268-2614 (000073X0346)

NIIN: 01-268-2614
In stock
NSN: 5331-01-268-2614
FSC Code: 5331
MPN: 000073X0346

5331-01-267-3076 (000073X0205)

NIIN: 01-267-3076
In stock
NSN: 5331-01-267-3076
FSC Code: 5331
MPN: 000073X0205

5331-01-285-4801 (000073X0131)

NIIN: 01-285-4801
In stock
NSN: 5331-01-285-4801
FSC Code: 5331
MPN: 000073X0131

5331-01-039-3075 (000073X0131)

NIIN: 01-039-3075
In stock
NSN: 5331-01-039-3075
FSC Code: 5331
MPN: 000073X0131

5331-01-285-0480 (000073X0337)

NIIN: 01-285-0480
In stock
NSN: 5331-01-285-0480
FSC Code: 5331
MPN: 000073X0337

5331-00-579-6495 (00008-447)

NIIN: 00-579-6495
In stock
NSN: 5331-00-579-6495
FSC Code: 5331
MPN: 00008447

5331-01-264-4237 (00008-447)

NIIN: 01-264-4237
In stock
NSN: 5331-01-264-4237
FSC Code: 5331
MPN: 00008447

5331-01-306-8630 (00008-825-50026)

NIIN: 01-306-8630
In stock
NSN: 5331-01-306-8630
FSC Code: 5331
MPN: 0000882550026

5331-00-121-7978 (0000ZZZ008-1)

NIIN: 00-121-7978
In stock
NSN: 5331-00-121-7978
FSC Code: 5331
MPN: 0000ZZZ0081

5331-01-122-0336 (0001.0002.R)

NIIN: 01-122-0336
In stock
NSN: 5331-01-122-0336
FSC Code: 5331
MPN: 00010002R

5331-01-220-9578 (0001.0033.R)

NIIN: 01-220-9578
In stock
NSN: 5331-01-220-9578
FSC Code: 5331
MPN: 00010033R

5331-00-269-0772 (0001.0024.R)

NIIN: 00-269-0772
In stock
NSN: 5331-00-269-0772
FSC Code: 5331
MPN: 00010024R

5331-01-268-6884 (0001.0014.R)

NIIN: 01-268-6884
In stock
NSN: 5331-01-268-6884
FSC Code: 5331
MPN: 00010014R

5331-01-240-2549 (0001.1006.R)

NIIN: 01-240-2549
In stock
NSN: 5331-01-240-2549
FSC Code: 5331
MPN: 00011006R

5331-01-016-7550 (0001.0038.R)

NIIN: 01-016-7550
In stock
NSN: 5331-01-016-7550
FSC Code: 5331
MPN: 00010038R

5331-01-067-6930 (0001-0006R)

NIIN: 01-067-6930
In stock
NSN: 5331-01-067-6930
FSC Code: 5331
MPN: 00010006R

5331-01-013-1453 (0001-0014R)

NIIN: 01-013-1453
In stock
NSN: 5331-01-013-1453
FSC Code: 5331
MPN: 00010014R

5331-00-076-3752 (0001-0028R)

NIIN: 00-076-3752
In stock
NSN: 5331-00-076-3752
FSC Code: 5331
MPN: 00010028R

5331-01-301-2076 (000-1001)

NIIN: 01-301-2076
In stock
NSN: 5331-01-301-2076
FSC Code: 5331
MPN: 0001001

5331-00-641-0778 (0001-0029R)

NIIN: 00-641-0778
In stock
NSN: 5331-00-641-0778
FSC Code: 5331
MPN: 00010029R

5331-00-263-9395 (0001-0028R)

NIIN: 00-263-9395
In stock
NSN: 5331-00-263-9395
FSC Code: 5331
MPN: 00010028R

5331-00-248-3838 (0001-0002R)

NIIN: 00-248-3838
In stock
NSN: 5331-00-248-3838
FSC Code: 5331
MPN: 00010002R

5331-01-220-3114 (0001-0029R)

NIIN: 01-220-3114
In stock
NSN: 5331-01-220-3114
FSC Code: 5331
MPN: 00010029R

5331-00-292-0580 (0001-0006R)

NIIN: 00-292-0580
In stock
NSN: 5331-00-292-0580
FSC Code: 5331
MPN: 00010006R

5331-00-166-8391 (0001-0039R)

NIIN: 00-166-8391
In stock
NSN: 5331-00-166-8391
FSC Code: 5331
MPN: 00010039R

5331-01-199-6161 (0-001-012-47)

NIIN: 01-199-6161
In stock
NSN: 5331-01-199-6161
FSC Code: 5331
MPN: 000101247

5331-01-292-0394 (000111EE)

NIIN: 01-292-0394
In stock
NSN: 5331-01-292-0394
FSC Code: 5331
MPN: 000111EE

5331-00-349-8017 (00011200MG)

NIIN: 00-349-8017
In stock
NSN: 5331-00-349-8017
FSC Code: 5331
MPN: 00011200MG

5331-01-230-8831 (000110ED)

NIIN: 01-230-8831
In stock
NSN: 5331-01-230-8831
FSC Code: 5331
MPN: 000110ED

5331-00-477-1710 (000112EB)

NIIN: 00-477-1710
In stock
NSN: 5331-00-477-1710
FSC Code: 5331
MPN: 000112EB

5331-00-256-3067 (00011300MG)

NIIN: 00-256-3067
In stock
NSN: 5331-00-256-3067
FSC Code: 5331
MPN: 00011300MG

5331-00-235-0922 (000112ED)

NIIN: 00-235-0922
In stock
NSN: 5331-00-235-0922
FSC Code: 5331
MPN: 000112ED

5331-01-271-5152 (000113000G)

NIIN: 01-271-5152
In stock
NSN: 5331-01-271-5152
FSC Code: 5331
MPN: 000113000G

5331-00-477-1675 (000113EA)

NIIN: 00-477-1675
In stock
NSN: 5331-00-477-1675
FSC Code: 5331
MPN: 000113EA

5331-00-579-7916 (000115EB)

NIIN: 00-579-7916
In stock
NSN: 5331-00-579-7916
FSC Code: 5331
MPN: 000115EB

5331-00-321-9267 (000114ED)

NIIN: 00-321-9267
In stock
NSN: 5331-00-321-9267
FSC Code: 5331
MPN: 000114ED

5331-01-105-9153 (000115EE)

NIIN: 01-105-9153
In stock
NSN: 5331-01-105-9153
FSC Code: 5331
MPN: 000115EE

5331-00-451-3034 (00011500MG)

NIIN: 00-451-3034
In stock
NSN: 5331-00-451-3034
FSC Code: 5331
MPN: 00011500MG

5331-00-166-1063 (000114EE)

NIIN: 00-166-1063
In stock
NSN: 5331-00-166-1063
FSC Code: 5331
MPN: 000114EE