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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.

5331-01-226-9507 (230-927-134-730-000)

NIIN: 01-226-9507
In stock
NSN: 5331-01-226-9507
FSC Code: 5331
MPN: 230927134730000

5331-01-314-2964 (230-927-133-730-000)

NIIN: 01-314-2964
In stock
NSN: 5331-01-314-2964
FSC Code: 5331
MPN: 230927133730000

5331-01-276-0760 (230-927-130-730-000)

NIIN: 01-276-0760
In stock
NSN: 5331-01-276-0760
FSC Code: 5331
MPN: 230927130730000

5331-01-314-3836 (230-927-129-730-000)

NIIN: 01-314-3836
In stock
NSN: 5331-01-314-3836
FSC Code: 5331
MPN: 230927129730000

5331-01-286-3478 (230-927-135-730-000)

NIIN: 01-286-3478
In stock
NSN: 5331-01-286-3478
FSC Code: 5331
MPN: 230927135730000

5331-01-214-3768 (230-927-114-730-000)

NIIN: 01-214-3768
In stock
NSN: 5331-01-214-3768
FSC Code: 5331
MPN: 230927114730000

5331-01-276-0759 (230-927-139-730-000)

NIIN: 01-276-0759
In stock
NSN: 5331-01-276-0759
FSC Code: 5331
MPN: 230927139730000

5331-01-040-2113 (230-927-223-730-000)

NIIN: 01-040-2113
In stock
NSN: 5331-01-040-2113
FSC Code: 5331
MPN: 230927223730000

5331-12-166-3385 (RDR10X2BDIN3770FP70)

NIIN: 12-166-3385
In stock
NSN: 5331-12-166-3385
FSC Code: 5331
MPN: RDR10X2BDIN3770FP70

5331-01-288-8986 (230-927-168-730-000)

NIIN: 01-288-8986
In stock
NSN: 5331-01-288-8986
FSC Code: 5331
MPN: 230927168730000

5331-01-304-2372 (230-927-213-730-000)

NIIN: 01-304-2372
In stock
NSN: 5331-01-304-2372
FSC Code: 5331
MPN: 230927213730000

5331-01-437-0429 (ZUS.4WRZ16.-51ITEM)

NIIN: 01-437-0429
In stock
NSN: 5331-01-437-0429
FSC Code: 5331
MPN: ZUS4WRZ1651ITEM

5331-01-296-1954 (230-927-266-730-000)

NIIN: 01-296-1954
In stock
NSN: 5331-01-296-1954
FSC Code: 5331
MPN: 230927266730000

5331-01-266-4062 (230-927-261-730-000)

NIIN: 01-266-4062
In stock
NSN: 5331-01-266-4062
FSC Code: 5331
MPN: 230927261730000

5331-01-296-6446 (230-927-224-730-000)

NIIN: 01-296-6446
In stock
NSN: 5331-01-296-6446
FSC Code: 5331
MPN: 230927224730000

5331-01-240-7871 (230-927-227-730-000)

NIIN: 01-240-7871
In stock
NSN: 5331-01-240-7871
FSC Code: 5331
MPN: 230927227730000

5331-01-281-9002 (230-927-206-730-000)

NIIN: 01-281-9002
In stock
NSN: 5331-01-281-9002
FSC Code: 5331
MPN: 230927206730000

5331-01-439-9769 (ZUS.4WRZ16.-51)

NIIN: 01-439-9769
In stock
NSN: 5331-01-439-9769
FSC Code: 5331
MPN: ZUS4WRZ1651

5331-01-277-4869 (230-927-211-730-000)

NIIN: 01-277-4869
In stock
NSN: 5331-01-277-4869
FSC Code: 5331
MPN: 230927211730000

5331-01-440-3113 (ZUS.4WRZ16.-51)

NIIN: 01-440-3113
In stock
NSN: 5331-01-440-3113
FSC Code: 5331
MPN: ZUS4WRZ1651

5331-01-229-3505 (230-927-337-730-000)

NIIN: 01-229-3505
In stock
NSN: 5331-01-229-3505
FSC Code: 5331
MPN: 230927337730000

5331-01-240-7872 (230-927-222-730-000)

NIIN: 01-240-7872
In stock
NSN: 5331-01-240-7872
FSC Code: 5331
MPN: 230927222730000

5331-01-440-3114 (ZUS.4WRZ16.-51)

NIIN: 01-440-3114
In stock
NSN: 5331-01-440-3114
FSC Code: 5331
MPN: ZUS4WRZ1651

5331-00-411-2976 (230-928-040-050-000)

NIIN: 00-411-2976
In stock
NSN: 5331-00-411-2976
FSC Code: 5331
MPN: 230928040050000

5331-01-240-7870 (230-927-274-730-000)

NIIN: 01-240-7870
In stock
NSN: 5331-01-240-7870
FSC Code: 5331
MPN: 230927274730000

5331-01-277-4870 (230-928-420-105-001)

NIIN: 01-277-4870
In stock
NSN: 5331-01-277-4870
FSC Code: 5331
MPN: 230928420105001

5331-01-307-4223 (230-935-420-104-021)

NIIN: 01-307-4223
In stock
NSN: 5331-01-307-4223
FSC Code: 5331
MPN: 230935420104021

5331-01-006-0302 (2-309V0747-75)

NIIN: 01-006-0302
In stock
NSN: 5331-01-006-0302
FSC Code: 5331
MPN: 2309V074775

5331-01-535-7142 (00-439990)

NIIN: 01-535-7142
In stock
NSN: 5331-01-535-7142
FSC Code: 5331
MPN: 00439990

5331-14-302-4571 (00447B7800A20B8)

NIIN: 14-302-4571
In stock
NSN: 5331-14-302-4571
FSC Code: 5331
MPN: 00447B7800A20B8

5331-01-304-9259 (2-31003-260)

NIIN: 01-304-9259
In stock
NSN: 5331-01-304-9259
FSC Code: 5331
MPN: 231003260

5331-01-509-8607 (004922.650.000)

NIIN: 01-509-8607
In stock
NSN: 5331-01-509-8607
FSC Code: 5331
MPN: 004922650000

5331-14-265-3865 (00490B9000A50D6)

NIIN: 14-265-3865
In stock
NSN: 5331-14-265-3865
FSC Code: 5331
MPN: 00490B9000A50D6

5331-01-005-3705 (2-311)

NIIN: 01-005-3705
In stock
NSN: 5331-01-005-3705
FSC Code: 5331
MPN: 2311

5331-01-005-3703 (2-310V0747-75)

NIIN: 01-005-3703
In stock
NSN: 5331-01-005-3703
FSC Code: 5331
MPN: 2310V074775

5331-01-088-8906 (2311-0078)

NIIN: 01-088-8906
In stock
NSN: 5331-01-088-8906
FSC Code: 5331
MPN: 23110078

5331-01-022-3839 (2311-0127)

NIIN: 01-022-3839
In stock
NSN: 5331-01-022-3839
FSC Code: 5331
MPN: 23110127

5331-01-022-5625 (2311-0137)

NIIN: 01-022-5625
In stock
NSN: 5331-01-022-5625
FSC Code: 5331
MPN: 23110137

5331-00-505-3833 (2311-0108)

NIIN: 00-505-3833
In stock
NSN: 5331-00-505-3833
FSC Code: 5331
MPN: 23110108

5331-01-022-8136 (2311-0147)

NIIN: 01-022-8136
In stock
NSN: 5331-01-022-8136
FSC Code: 5331
MPN: 23110147

5331-01-022-3097 (2311-0347)

NIIN: 01-022-3097
In stock
NSN: 5331-01-022-3097
FSC Code: 5331
MPN: 23110347

5331-01-022-5626 (2311-0247)

NIIN: 01-022-5626
In stock
NSN: 5331-01-022-5626
FSC Code: 5331
MPN: 23110247

5331-01-022-0363 (2311-0287)

NIIN: 01-022-0363
In stock
NSN: 5331-01-022-0363
FSC Code: 5331
MPN: 23110287

5331-00-505-3912 (2311-1178)

NIIN: 00-505-3912
In stock
NSN: 5331-00-505-3912
FSC Code: 5331
MPN: 23111178

5331-01-126-9088 (2311-1177)

NIIN: 01-126-9088
In stock
NSN: 5331-01-126-9088
FSC Code: 5331
MPN: 23111177

5331-01-022-0362 (2311-1267)

NIIN: 01-022-0362
In stock
NSN: 5331-01-022-0362
FSC Code: 5331
MPN: 23111267

5331-00-412-1156 (23111-99-0323)

NIIN: 00-412-1156
In stock
NSN: 5331-00-412-1156
FSC Code: 5331
MPN: 23111990323

5331-01-379-4388 (0050B70218)

NIIN: 01-379-4388
In stock
NSN: 5331-01-379-4388
FSC Code: 5331
MPN: 0050B70218