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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.

5331-01-136-6079 (560-001-360)

NIIN: 01-136-6079
In stock
NSN: 5331-01-136-6079
FSC Code: 5331
MPN: 560001360

5331-01-259-6186 (55S-0161M-004)

NIIN: 01-259-6186
In stock
NSN: 5331-01-259-6186
FSC Code: 5331
MPN: 55S0161M004

5331-99-668-7799 (G406/8054/1049)

NIIN: 99-668-7799
In stock
NSN: 5331-99-668-7799
FSC Code: 5331
MPN: G40680541049

5331-01-439-0079 (204-0113)

NIIN: 01-439-0079
In stock
NSN: 5331-01-439-0079
FSC Code: 5331
MPN: 2040113

5331-01-296-2887 (5598650-1)

NIIN: 01-296-2887
In stock
NSN: 5331-01-296-2887
FSC Code: 5331
MPN: 55986501

5331-01-367-6228 (20-3936)

NIIN: 01-367-6228
In stock
NSN: 5331-01-367-6228
FSC Code: 5331
MPN: 203936

5331-01-428-3645 (203-927-011-730-000)

NIIN: 01-428-3645
In stock
NSN: 5331-01-428-3645
FSC Code: 5331
MPN: 203927011730000

5331-01-453-9940 (2-038-L6413)

NIIN: 01-453-9940
In stock
NSN: 5331-01-453-9940
FSC Code: 5331
MPN: 2038L6413

5331-01-356-5025 (2-038-NB)

NIIN: 01-356-5025
In stock
NSN: 5331-01-356-5025
FSC Code: 5331
MPN: 2038NB

5331-00-915-6397 (5594PC12-31N)

NIIN: 00-915-6397
In stock
NSN: 5331-00-915-6397
FSC Code: 5331
MPN: 5594PC1231N

5331-01-369-1886 (MIL-DTL-25988/3)

NIIN: 01-369-1886
In stock
NSN: 5331-01-369-1886
FSC Code: 5331
MPN: MILDTL259883

5331-01-483-9127 (820-5295960PC25G)

NIIN: 01-483-9127
In stock
NSN: 5331-01-483-9127
FSC Code: 5331
MPN: 8205295960PC25G

5331-01-553-4315 (2-037-47-071)

NIIN: 01-553-4315
In stock
NSN: 5331-01-553-4315
FSC Code: 5331
MPN: 203747071

5331-01-492-7052 (2-037L1218-80)

NIIN: 01-492-7052
In stock
NSN: 5331-01-492-7052
FSC Code: 5331
MPN: 2037L121880

5331-01-453-9959 (2-036-L6413)

NIIN: 01-453-9959
In stock
NSN: 5331-01-453-9959
FSC Code: 5331
MPN: 2036L6413

5331-01-507-0289 (2-037)

NIIN: 01-507-0289
In stock
NSN: 5331-01-507-0289
FSC Code: 5331
MPN: 2037

5331-01-504-2779 (2-036L1223-60)

NIIN: 01-504-2779
In stock
NSN: 5331-01-504-2779
FSC Code: 5331
MPN: 2036L122360

5331-00-242-7403 (55-906-6-8309)

NIIN: 00-242-7403
In stock
NSN: 5331-00-242-7403
FSC Code: 5331
MPN: 5590668309

5331-00-459-4689 (55-906-2-8309)

NIIN: 00-459-4689
In stock
NSN: 5331-00-459-4689
FSC Code: 5331
MPN: 5590628309

5331-01-355-3156 (AMS-R-83285GR80/AS568-213)

NIIN: 01-355-3156
In stock
NSN: 5331-01-355-3156
FSC Code: 5331
MPN: AMSR83285GR80AS568213

5331-01-224-1472 (55-906-8-8309)

NIIN: 01-224-1472
In stock
NSN: 5331-01-224-1472
FSC Code: 5331
MPN: 5590688309

5331-01-129-9669 (5589B087TDA)

NIIN: 01-129-9669
In stock
NSN: 5331-01-129-9669
FSC Code: 5331
MPN: 5589B087TDA

5331-01-512-4567 (BULLETIN)

NIIN: 01-512-4567
In stock
NSN: 5331-01-512-4567
FSC Code: 5331
MPN: BULLETIN

5331-01-493-3706 (STS047V047AL036CP)

NIIN: 01-493-3706
In stock
NSN: 5331-01-493-3706
FSC Code: 5331
MPN: STS047V047AL036CP

5331-01-553-4314 (2-035-47-071)

NIIN: 01-553-4314
In stock
NSN: 5331-01-553-4314
FSC Code: 5331
MPN: 203547071

5331-01-481-4016 (WR-112-HALF)

NIIN: 01-481-4016
In stock
NSN: 5331-01-481-4016
FSC Code: 5331
MPN: WR112HALF

5331-01-361-5424 (2-034N756-75)

NIIN: 01-361-5424
In stock
NSN: 5331-01-361-5424
FSC Code: 5331
MPN: 2034N75675

5331-01-340-3911 (203428-5)

NIIN: 01-340-3911
In stock
NSN: 5331-01-340-3911
FSC Code: 5331
MPN: 2034285

5331-01-423-4994 (PRP-568-033-5601-70)

NIIN: 01-423-4994
In stock
NSN: 5331-01-423-4994
FSC Code: 5331
MPN: PRP568033560170

5331-01-483-9124 (820-5295960PC34G)

NIIN: 01-483-9124
In stock
NSN: 5331-01-483-9124
FSC Code: 5331
MPN: 8205295960PC34G

5331-01-423-9862 (MIL-DTL-25988/3)

NIIN: 01-423-9862
In stock
NSN: 5331-01-423-9862
FSC Code: 5331
MPN: MILDTL259883

5331-01-502-2922 (2-032L1120-70)

NIIN: 01-502-2922
In stock
NSN: 5331-01-502-2922
FSC Code: 5331
MPN: 2032L112070

5331-01-322-6917 (557-S-8)

NIIN: 01-322-6917
In stock
NSN: 5331-01-322-6917
FSC Code: 5331
MPN: 557S8

5331-00-202-3976 (557S2)

NIIN: 00-202-3976
In stock
NSN: 5331-00-202-3976
FSC Code: 5331
MPN: 557S2

5331-01-059-1138 (5-57B612-70)

NIIN: 01-059-1138
In stock
NSN: 5331-01-059-1138
FSC Code: 5331
MPN: 557B61270

5331-00-328-1259 (557S3)

NIIN: 00-328-1259
In stock
NSN: 5331-00-328-1259
FSC Code: 5331
MPN: 557S3

5331-01-093-9705 (5-573-N507-90)

NIIN: 01-093-9705
In stock
NSN: 5331-01-093-9705
FSC Code: 5331
MPN: 5573N50790

5331-01-020-9700 (5-573V747-75)

NIIN: 01-020-9700
In stock
NSN: 5331-01-020-9700
FSC Code: 5331
MPN: 5573V74775

5331-01-393-0772 (2-031S604-70)

NIIN: 01-393-0772
In stock
NSN: 5331-01-393-0772
FSC Code: 5331
MPN: 2031S60470

5331-01-381-3876 (2-031A)

NIIN: 01-381-3876
In stock
NSN: 5331-01-381-3876
FSC Code: 5331
MPN: 2031A

5331-01-491-7198 (W006001-023)

NIIN: 01-491-7198
In stock
NSN: 5331-01-491-7198
FSC Code: 5331
MPN: W006001023

5331-01-474-4939 (2031D90)

NIIN: 01-474-4939
In stock
NSN: 5331-01-474-4939
FSC Code: 5331
MPN: 2031D90

5331-01-467-3373 (20315J)

NIIN: 01-467-3373
In stock
NSN: 5331-01-467-3373
FSC Code: 5331
MPN: 20315J

5331-01-070-1736 (5-567N304-75)

NIIN: 01-070-1736
In stock
NSN: 5331-01-070-1736
FSC Code: 5331
MPN: 5567N30475

5331-01-453-9582 (203-0703)

NIIN: 01-453-9582
In stock
NSN: 5331-01-453-9582
FSC Code: 5331
MPN: 2030703

5331-01-461-8661 (2-030C0873-70)

NIIN: 01-461-8661
In stock
NSN: 5331-01-461-8661
FSC Code: 5331
MPN: 2030C087370

5331-01-533-9644 (203-0704)

NIIN: 01-533-9644
In stock
NSN: 5331-01-533-9644
FSC Code: 5331
MPN: 2030704

5331-01-533-9631 (203-0701)

NIIN: 01-533-9631
In stock
NSN: 5331-01-533-9631
FSC Code: 5331
MPN: 2030701