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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.

5331-01-107-4958 (00039648)

NIIN: 01-107-4958
In stock
NSN: 5331-01-107-4958
FSC Code: 5331
MPN: 00039648

5331-01-312-3739 (0004-1917-740)

NIIN: 01-312-3739
In stock
NSN: 5331-01-312-3739
FSC Code: 5331
MPN: 00041917740

5331-01-280-6783 (0004-2033V835-75)

NIIN: 01-280-6783
In stock
NSN: 5331-01-280-6783
FSC Code: 5331
MPN: 00042033V83575

5331-01-312-3738 (0004-2361-758)

NIIN: 01-312-3738
In stock
NSN: 5331-01-312-3738
FSC Code: 5331
MPN: 00042361758

5331-00-451-9179 (000-450-00ML)

NIIN: 00-451-9179
In stock
NSN: 5331-00-451-9179
FSC Code: 5331
MPN: 00045000ML

5331-00-435-9014 (00045300ML)

NIIN: 00-435-9014
In stock
NSN: 5331-00-435-9014
FSC Code: 5331
MPN: 00045300ML

5331-01-047-6303 (00045800ML)

NIIN: 01-047-6303
In stock
NSN: 5331-01-047-6303
FSC Code: 5331
MPN: 00045800ML

5331-01-243-9449 (0004620560)

NIIN: 01-243-9449
In stock
NSN: 5331-01-243-9449
FSC Code: 5331
MPN: 0004620560

5331-01-256-9742 (0004-7032V835-75)

NIIN: 01-256-9742
In stock
NSN: 5331-01-256-9742
FSC Code: 5331
MPN: 00047032V83575

5331-01-254-9182 (0005-0026V835-75)

NIIN: 01-254-9182
In stock
NSN: 5331-01-254-9182
FSC Code: 5331
MPN: 00050026V83575

5331-01-213-9817 (00049)

NIIN: 01-213-9817
In stock
NSN: 5331-01-213-9817
FSC Code: 5331
MPN: 00049

5331-01-005-8366 (00050-447)

NIIN: 01-005-8366
In stock
NSN: 5331-01-005-8366
FSC Code: 5331
MPN: 00050447

5331-00-003-0697 (000572-111)

NIIN: 00-003-0697
In stock
NSN: 5331-00-003-0697
FSC Code: 5331
MPN: 000572111

5331-00-135-5061 (0006-11-0017)

NIIN: 00-135-5061
In stock
NSN: 5331-00-135-5061
FSC Code: 5331
MPN: 0006110017

5331-00-133-1990 (0006-11-0015)

NIIN: 00-133-1990
In stock
NSN: 5331-00-133-1990
FSC Code: 5331
MPN: 0006110015

5331-01-244-4532 (0006-11-0327)

NIIN: 01-244-4532
In stock
NSN: 5331-01-244-4532
FSC Code: 5331
MPN: 0006110327

5331-00-132-7805 (0006-11-0235)

NIIN: 00-132-7805
In stock
NSN: 5331-00-132-7805
FSC Code: 5331
MPN: 0006110235

5331-00-132-7806 (0006-11-0240)

NIIN: 00-132-7806
In stock
NSN: 5331-00-132-7806
FSC Code: 5331
MPN: 0006110240

5331-00-421-9387 (00068-447)

NIIN: 00-421-9387
In stock
NSN: 5331-00-421-9387
FSC Code: 5331
MPN: 00068447

5331-01-312-3740 (0007-2124-750)

NIIN: 01-312-3740
In stock
NSN: 5331-01-312-3740
FSC Code: 5331
MPN: 00072124750

5331-01-312-3742 (0007-1988-750)

NIIN: 01-312-3742
In stock
NSN: 5331-01-312-3742
FSC Code: 5331
MPN: 00071988750

5331-01-312-3741 (0007-2560-750)

NIIN: 01-312-3741
In stock
NSN: 5331-01-312-3741
FSC Code: 5331
MPN: 00072560750

5331-01-205-9801 (00074)

NIIN: 01-205-9801
In stock
NSN: 5331-01-205-9801
FSC Code: 5331
MPN: 00074

5331-00-075-3266 (000799)

NIIN: 00-075-3266
In stock
NSN: 5331-00-075-3266
FSC Code: 5331
MPN: 000799

5331-01-312-6974 (000800016-017)

NIIN: 01-312-6974
In stock
NSN: 5331-01-312-6974
FSC Code: 5331
MPN: 000800016017

5331-01-129-4332 (0-009-00)

NIIN: 01-129-4332
In stock
NSN: 5331-01-129-4332
FSC Code: 5331
MPN: 000900

5331-00-916-9800 (0009-0020V709-9)

NIIN: 00-916-9800
In stock
NSN: 5331-00-916-9800
FSC Code: 5331
MPN: 00090020V7099

5331-00-436-1938 (000902EB)

NIIN: 00-436-1938
In stock
NSN: 5331-00-436-1938
FSC Code: 5331
MPN: 000902EB

5331-01-334-9946 (000902T)

NIIN: 01-334-9946
In stock
NSN: 5331-01-334-9946
FSC Code: 5331
MPN: 000902T

5331-01-253-7146 (000903EE)

NIIN: 01-253-7146
In stock
NSN: 5331-01-253-7146
FSC Code: 5331
MPN: 000903EE

5331-01-292-1424 (000904EE)

NIIN: 01-292-1424
In stock
NSN: 5331-01-292-1424
FSC Code: 5331
MPN: 000904EE

5331-00-477-1797 (000904EB)

NIIN: 00-477-1797
In stock
NSN: 5331-00-477-1797
FSC Code: 5331
MPN: 000904EB

5331-00-167-5173 (000908)

NIIN: 00-167-5173
In stock
NSN: 5331-00-167-5173
FSC Code: 5331
MPN: 000908

5331-01-176-3928 (000904EE)

NIIN: 01-176-3928
In stock
NSN: 5331-01-176-3928
FSC Code: 5331
MPN: 000904EE

5331-00-810-1163 (000916)

NIIN: 00-810-1163
In stock
NSN: 5331-00-810-1163
FSC Code: 5331
MPN: 000916

5331-01-151-5065 (000920EB)

NIIN: 01-151-5065
In stock
NSN: 5331-01-151-5065
FSC Code: 5331
MPN: 000920EB

5331-01-322-6920 (000948)

NIIN: 01-322-6920
In stock
NSN: 5331-01-322-6920
FSC Code: 5331
MPN: 000948

5331-01-313-3569 (0009870446)

NIIN: 01-313-3569
In stock
NSN: 5331-01-313-3569
FSC Code: 5331
MPN: 0009870446

5331-01-107-4954 (000991047-002)

NIIN: 01-107-4954
In stock
NSN: 5331-01-107-4954
FSC Code: 5331
MPN: 000991047002

5331-01-237-4958 (000991624-000)

NIIN: 01-237-4958
In stock
NSN: 5331-01-237-4958
FSC Code: 5331
MPN: 000991624000

5331-01-237-9171 (000991625-000)

NIIN: 01-237-9171
In stock
NSN: 5331-01-237-9171
FSC Code: 5331
MPN: 000991625000

5331-01-005-2309 (000991713-001)

NIIN: 01-005-2309
In stock
NSN: 5331-01-005-2309
FSC Code: 5331
MPN: 000991713001

5331-01-005-3214 (000991713-004)

NIIN: 01-005-3214
In stock
NSN: 5331-01-005-3214
FSC Code: 5331
MPN: 000991713004

5331-01-238-5865 (0009971348)

NIIN: 01-238-5865
In stock
NSN: 5331-01-238-5865
FSC Code: 5331
MPN: 0009971348

5331-01-022-1310 (0009973045)

NIIN: 01-022-1310
In stock
NSN: 5331-01-022-1310
FSC Code: 5331
MPN: 0009973045

5331-01-024-4643 (0009974045)

NIIN: 01-024-4643
In stock
NSN: 5331-01-024-4643
FSC Code: 5331
MPN: 0009974045

5331-01-175-5546 (0009974848)

NIIN: 01-175-5546
In stock
NSN: 5331-01-175-5546
FSC Code: 5331
MPN: 0009974848

5331-01-171-4705 (0009974748)

NIIN: 01-171-4705
In stock
NSN: 5331-01-171-4705
FSC Code: 5331
MPN: 0009974748