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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.

5331-00-802-8902 (63-00036-1)

NIIN: 00-802-8902
In stock
NSN: 5331-00-802-8902
FSC Code: 5331
MPN: 63000361

5331-01-206-2138 (62S-25)

NIIN: 01-206-2138
In stock
NSN: 5331-01-206-2138
FSC Code: 5331
MPN: 62S25

5331-01-572-7937 (25-38101)

NIIN: 01-572-7937
In stock
NSN: 5331-01-572-7937
FSC Code: 5331
MPN: 2538101

5331-00-516-6310 (62G008MPC12)

NIIN: 00-516-6310
In stock
NSN: 5331-00-516-6310
FSC Code: 5331
MPN: 62G008MPC12

5331-01-353-9384 (2536820-614)

NIIN: 01-353-9384
In stock
NSN: 5331-01-353-9384
FSC Code: 5331
MPN: 2536820614

5331-01-134-5814 (62G-0008M-1)

NIIN: 01-134-5814
In stock
NSN: 5331-01-134-5814
FSC Code: 5331
MPN: 62G0008M1

5331-01-392-9470 (25-36318)

NIIN: 01-392-9470
In stock
NSN: 5331-01-392-9470
FSC Code: 5331
MPN: 2536318

5331-01-534-8751 (25-36390)

NIIN: 01-534-8751
In stock
NSN: 5331-01-534-8751
FSC Code: 5331
MPN: 2536390

5331-01-501-6327 (25-35027)

NIIN: 01-501-6327
In stock
NSN: 5331-01-501-6327
FSC Code: 5331
MPN: 2535027

5331-01-462-7789 (25-35126)

NIIN: 01-462-7789
In stock
NSN: 5331-01-462-7789
FSC Code: 5331
MPN: 2535126

5331-01-501-6332 (25-34821)

NIIN: 01-501-6332
In stock
NSN: 5331-01-501-6332
FSC Code: 5331
MPN: 2534821

5331-00-070-2369 (6-298-29)

NIIN: 00-070-2369
In stock
NSN: 5331-00-070-2369
FSC Code: 5331
MPN: 629829

5331-01-462-7453 (25-33466)

NIIN: 01-462-7453
In stock
NSN: 5331-01-462-7453
FSC Code: 5331
MPN: 2533466

5331-01-507-9058 (2532499-248)

NIIN: 01-507-9058
In stock
NSN: 5331-01-507-9058
FSC Code: 5331
MPN: 2532499248

5331-01-507-9054 (2532499-235)

NIIN: 01-507-9054
In stock
NSN: 5331-01-507-9054
FSC Code: 5331
MPN: 2532499235

5331-01-507-9057 (2532499-243)

NIIN: 01-507-9057
In stock
NSN: 5331-01-507-9057
FSC Code: 5331
MPN: 2532499243

5331-01-572-7936 (25-32509)

NIIN: 01-572-7936
In stock
NSN: 5331-01-572-7936
FSC Code: 5331
MPN: 2532509

5331-01-507-9056 (2532499-241)

NIIN: 01-507-9056
In stock
NSN: 5331-01-507-9056
FSC Code: 5331
MPN: 2532499241

5331-01-507-9053 (2532499-217)

NIIN: 01-507-9053
In stock
NSN: 5331-01-507-9053
FSC Code: 5331
MPN: 2532499217

5331-01-507-9055 (2532499-239)

NIIN: 01-507-9055
In stock
NSN: 5331-01-507-9055
FSC Code: 5331
MPN: 2532499239

5331-01-379-6045 (25311-801-17)

NIIN: 01-379-6045
In stock
NSN: 5331-01-379-6045
FSC Code: 5331
MPN: 2531180117

5331-01-379-8948 (25311-007-21)

NIIN: 01-379-8948
In stock
NSN: 5331-01-379-8948
FSC Code: 5331
MPN: 2531100721

5331-01-509-4318 (25-30641)

NIIN: 01-509-4318
In stock
NSN: 5331-01-509-4318
FSC Code: 5331
MPN: 2530641

5331-01-501-6329 (25-29845)

NIIN: 01-501-6329
In stock
NSN: 5331-01-501-6329
FSC Code: 5331
MPN: 2529845

5331-01-455-7374 (2526677-3)

NIIN: 01-455-7374
In stock
NSN: 5331-01-455-7374
FSC Code: 5331
MPN: 25266773

5331-00-951-1888 (6279R61-6)

NIIN: 00-951-1888
In stock
NSN: 5331-00-951-1888
FSC Code: 5331
MPN: 6279R616

5331-00-951-1889 (6279R61-5)

NIIN: 00-951-1889
In stock
NSN: 5331-00-951-1889
FSC Code: 5331
MPN: 6279R615

5331-00-951-1886 (6279R61-8)

NIIN: 00-951-1886
In stock
NSN: 5331-00-951-1886
FSC Code: 5331
MPN: 6279R618

5331-01-368-7482 (25-237)

NIIN: 01-368-7482
In stock
NSN: 5331-01-368-7482
FSC Code: 5331
MPN: 25237

5331-01-504-6856 (25227-363)

NIIN: 01-504-6856
In stock
NSN: 5331-01-504-6856
FSC Code: 5331
MPN: 25227363

5331-01-407-7183 (25221-13)

NIIN: 01-407-7183
In stock
NSN: 5331-01-407-7183
FSC Code: 5331
MPN: 2522113

5331-01-393-2895 (25-21836)

NIIN: 01-393-2895
In stock
NSN: 5331-01-393-2895
FSC Code: 5331
MPN: 2521836

5331-01-501-6334 (25-20826)

NIIN: 01-501-6334
In stock
NSN: 5331-01-501-6334
FSC Code: 5331
MPN: 2520826

5331-01-372-8342 (2-520-020-830-00)

NIIN: 01-372-8342
In stock
NSN: 5331-01-372-8342
FSC Code: 5331
MPN: 252002083000

5331-01-417-7760 (2-520-018-830)

NIIN: 01-417-7760
In stock
NSN: 5331-01-417-7760
FSC Code: 5331
MPN: 2520018830

5331-01-501-6322 (25-20195)

NIIN: 01-501-6322
In stock
NSN: 5331-01-501-6322
FSC Code: 5331
MPN: 2520195

5331-01-389-0993 (25-17645)

NIIN: 01-389-0993
In stock
NSN: 5331-01-389-0993
FSC Code: 5331
MPN: 2517645

5331-01-389-0088 (25-17625)

NIIN: 01-389-0088
In stock
NSN: 5331-01-389-0088
FSC Code: 5331
MPN: 2517625

5331-01-447-4034 (251-70-BN)

NIIN: 01-447-4034
In stock
NSN: 5331-01-447-4034
FSC Code: 5331
MPN: 25170BN

5331-01-561-1024 (25-167)

NIIN: 01-561-1024
In stock
NSN: 5331-01-561-1024
FSC Code: 5331
MPN: 25167

5331-01-501-6336 (25-16524)

NIIN: 01-501-6336
In stock
NSN: 5331-01-501-6336
FSC Code: 5331
MPN: 2516524

5331-01-528-9781 (25-16131-3)

NIIN: 01-528-9781
In stock
NSN: 5331-01-528-9781
FSC Code: 5331
MPN: 25161313

5331-01-537-1662 (25-16131-9)

NIIN: 01-537-1662
In stock
NSN: 5331-01-537-1662
FSC Code: 5331
MPN: 25161319

5331-01-537-1735 (25-16177-2)

NIIN: 01-537-1735
In stock
NSN: 5331-01-537-1735
FSC Code: 5331
MPN: 25161772

5331-01-537-1744 (25-16131-8)

NIIN: 01-537-1744
In stock
NSN: 5331-01-537-1744
FSC Code: 5331
MPN: 25161318

5331-01-537-1660 (25-16131-2)

NIIN: 01-537-1660
In stock
NSN: 5331-01-537-1660
FSC Code: 5331
MPN: 25161312

5331-01-537-1742 (25-16131-4)

NIIN: 01-537-1742
In stock
NSN: 5331-01-537-1742
FSC Code: 5331
MPN: 25161314

5331-01-537-1642 (25-16178-2)

NIIN: 01-537-1642
In stock
NSN: 5331-01-537-1642
FSC Code: 5331
MPN: 25161782