Skip to content

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.

5331-01-371-3618 (6-A248-SN991632)

NIIN: 01-371-3618
In stock
NSN: 5331-01-371-3618
FSC Code: 5331
MPN: 6A248SN991632

5331-01-323-8858 (D841-4031-100)

NIIN: 01-323-8858
In stock
NSN: 5331-01-323-8858
FSC Code: 5331
MPN: D8414031100

5331-01-371-3620 (6-A252-SN991632)

NIIN: 01-371-3620
In stock
NSN: 5331-01-371-3620
FSC Code: 5331
MPN: 6A252SN991632

5331-01-371-3619 (6-A250-SN991632)

NIIN: 01-371-3619
In stock
NSN: 5331-01-371-3619
FSC Code: 5331
MPN: 6A250SN991632

5331-01-264-1088 (D841-3230)

NIIN: 01-264-1088
In stock
NSN: 5331-01-264-1088
FSC Code: 5331
MPN: D8413230

5331-01-264-1087 (D841-3227)

NIIN: 01-264-1087
In stock
NSN: 5331-01-264-1087
FSC Code: 5331
MPN: D8413227

5331-01-264-1086 (D841-3225)

NIIN: 01-264-1086
In stock
NSN: 5331-01-264-1086
FSC Code: 5331
MPN: D8413225

5331-01-263-3851 (D841-3209)

NIIN: 01-263-3851
In stock
NSN: 5331-01-263-3851
FSC Code: 5331
MPN: D8413209

5331-01-263-3853 (D841-3220)

NIIN: 01-263-3853
In stock
NSN: 5331-01-263-3853
FSC Code: 5331
MPN: D8413220

5331-01-263-3852 (D841-3210)

NIIN: 01-263-3852
In stock
NSN: 5331-01-263-3852
FSC Code: 5331
MPN: D8413210

5331-01-312-7167 (D841-1066)

NIIN: 01-312-7167
In stock
NSN: 5331-01-312-7167
FSC Code: 5331
MPN: D8411066

5331-00-796-9460 (D82-2)

NIIN: 00-796-9460
In stock
NSN: 5331-00-796-9460
FSC Code: 5331
MPN: D822

5331-01-266-4461 (D-812699-1)

NIIN: 01-266-4461
In stock
NSN: 5331-01-266-4461
FSC Code: 5331
MPN: D8126991

5331-01-150-1956 (D802-1971-88)

NIIN: 01-150-1956
In stock
NSN: 5331-01-150-1956
FSC Code: 5331
MPN: D802197188

5331-01-151-1449 (D802-1971-89)

NIIN: 01-151-1449
In stock
NSN: 5331-01-151-1449
FSC Code: 5331
MPN: D802197189

5331-01-137-8070 (D801-1099-3)

NIIN: 01-137-8070
In stock
NSN: 5331-01-137-8070
FSC Code: 5331
MPN: D80110993

5331-01-137-5715 (D801-1966-41)

NIIN: 01-137-5715
In stock
NSN: 5331-01-137-5715
FSC Code: 5331
MPN: D801196641

5331-01-104-0116 (D7NN-3D587-A)

NIIN: 01-104-0116
In stock
NSN: 5331-01-104-0116
FSC Code: 5331
MPN: D7NN3D587A

5331-01-137-5717 (D794-1973-10)

NIIN: 01-137-5717
In stock
NSN: 5331-01-137-5717
FSC Code: 5331
MPN: D794197310

5331-01-137-6354 (D794-1971-95)

NIIN: 01-137-6354
In stock
NSN: 5331-01-137-6354
FSC Code: 5331
MPN: D794197195

5331-01-137-6355 (D794-1971-96)

NIIN: 01-137-6355
In stock
NSN: 5331-01-137-6355
FSC Code: 5331
MPN: D794197196

5331-01-137-5718 (D794-1034-12)

NIIN: 01-137-5718
In stock
NSN: 5331-01-137-5718
FSC Code: 5331
MPN: D794103412

5331-01-137-6353 (D794-1971-94)

NIIN: 01-137-6353
In stock
NSN: 5331-01-137-6353
FSC Code: 5331
MPN: D794197194

5331-01-137-6352 (D794-1971-93)

NIIN: 01-137-6352
In stock
NSN: 5331-01-137-6352
FSC Code: 5331
MPN: D794197193

5331-01-137-5724 (D794-1099-4)

NIIN: 01-137-5724
In stock
NSN: 5331-01-137-5724
FSC Code: 5331
MPN: D79410994

5331-01-137-5719 (D791-2508-9)

NIIN: 01-137-5719
In stock
NSN: 5331-01-137-5719
FSC Code: 5331
MPN: D79125089

5331-01-137-5716 (D791-1971-92)

NIIN: 01-137-5716
In stock
NSN: 5331-01-137-5716
FSC Code: 5331
MPN: D791197192

5331-01-137-5722 (D791-1228-11)

NIIN: 01-137-5722
In stock
NSN: 5331-01-137-5722
FSC Code: 5331
MPN: D791122811

5331-01-137-8068 (D791-1226-10)

NIIN: 01-137-8068
In stock
NSN: 5331-01-137-8068
FSC Code: 5331
MPN: D791122610

5331-01-137-8067 (D791-1226-5)

NIIN: 01-137-8067
In stock
NSN: 5331-01-137-8067
FSC Code: 5331
MPN: D79112265

5331-01-137-5721 (D791-1228-6)

NIIN: 01-137-5721
In stock
NSN: 5331-01-137-5721
FSC Code: 5331
MPN: D79112286

5331-01-137-8069 (D791-1207-3)

NIIN: 01-137-8069
In stock
NSN: 5331-01-137-8069
FSC Code: 5331
MPN: D79112073

5331-01-303-5377 (D77440)

NIIN: 01-303-5377
In stock
NSN: 5331-01-303-5377
FSC Code: 5331
MPN: D77440

5331-01-481-7683 (6994557003-1)

NIIN: 01-481-7683
In stock
NSN: 5331-01-481-7683
FSC Code: 5331
MPN: 69945570031

5331-00-482-4441 (D75370)

NIIN: 00-482-4441
In stock
NSN: 5331-00-482-4441
FSC Code: 5331
MPN: D75370

5331-01-432-4942 (6990481-3)

NIIN: 01-432-4942
In stock
NSN: 5331-01-432-4942
FSC Code: 5331
MPN: 69904813

5331-01-432-4944 (6990481-4)

NIIN: 01-432-4944
In stock
NSN: 5331-01-432-4944
FSC Code: 5331
MPN: 69904814

5331-01-432-3930 (6990481-2)

NIIN: 01-432-3930
In stock
NSN: 5331-01-432-3930
FSC Code: 5331
MPN: 69904812

5331-01-432-3927 (6990481-5)

NIIN: 01-432-3927
In stock
NSN: 5331-01-432-3927
FSC Code: 5331
MPN: 69904815

5331-01-492-0280 (69890-121)

NIIN: 01-492-0280
In stock
NSN: 5331-01-492-0280
FSC Code: 5331
MPN: 69890121

5331-01-329-1885 (D71460)

NIIN: 01-329-1885
In stock
NSN: 5331-01-329-1885
FSC Code: 5331
MPN: D71460

5331-01-249-9553 (D71437)

NIIN: 01-249-9553
In stock
NSN: 5331-01-249-9553
FSC Code: 5331
MPN: D71437

5331-00-860-2586 (D70342)

NIIN: 00-860-2586
In stock
NSN: 5331-00-860-2586
FSC Code: 5331
MPN: D70342

5331-01-166-1579 (D-67500-97)

NIIN: 01-166-1579
In stock
NSN: 5331-01-166-1579
FSC Code: 5331
MPN: D6750097

5331-01-308-7358 (D-67500-5)

NIIN: 01-308-7358
In stock
NSN: 5331-01-308-7358
FSC Code: 5331
MPN: D675005

5331-00-890-5781 (D-67500-24)

NIIN: 00-890-5781
In stock
NSN: 5331-00-890-5781
FSC Code: 5331
MPN: D6750024

5331-01-263-1082 (D-67500-96)

NIIN: 01-263-1082
In stock
NSN: 5331-01-263-1082
FSC Code: 5331
MPN: D6750096

5331-01-175-6751 (D-67500-30)

NIIN: 01-175-6751
In stock
NSN: 5331-01-175-6751
FSC Code: 5331
MPN: D6750030