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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.

5331-00-833-8888 (45Z91D102)

NIIN: 00-833-8888
In stock
NSN: 5331-00-833-8888
FSC Code: 5331
MPN: 45Z91D102

5331-01-211-0316 (45Z347D214)

NIIN: 01-211-0316
In stock
NSN: 5331-01-211-0316
FSC Code: 5331
MPN: 45Z347D214

5331-01-211-0469 (45Z347D133)

NIIN: 01-211-0469
In stock
NSN: 5331-01-211-0469
FSC Code: 5331
MPN: 45Z347D133

5331-01-263-3854 (45Z415)

NIIN: 01-263-3854
In stock
NSN: 5331-01-263-3854
FSC Code: 5331
MPN: 45Z415

5331-00-436-1940 (45Z108)

NIIN: 00-436-1940
In stock
NSN: 5331-00-436-1940
FSC Code: 5331
MPN: 45Z108

5331-01-308-0107 (45Z343D81)

NIIN: 01-308-0107
In stock
NSN: 5331-01-308-0107
FSC Code: 5331
MPN: 45Z343D81

5331-01-022-1848 (45N24)

NIIN: 01-022-1848
In stock
NSN: 5331-01-022-1848
FSC Code: 5331
MPN: 45N24

5331-12-304-3697 (700429015004)

NIIN: 12-304-3697
In stock
NSN: 5331-12-304-3697
FSC Code: 5331
MPN: 700429015004

5331-01-362-7251 (15X1.5)

NIIN: 01-362-7251
In stock
NSN: 5331-01-362-7251
FSC Code: 5331
MPN: 15X15

5331-01-542-3137 (15X2)

NIIN: 01-542-3137
In stock
NSN: 5331-01-542-3137
FSC Code: 5331
MPN: 15X2

5331-00-955-9646 (45C3317-235)

NIIN: 00-955-9646
In stock
NSN: 5331-00-955-9646
FSC Code: 5331
MPN: 45C3317235

5331-00-999-2723 (45-94596)

NIIN: 00-999-2723
In stock
NSN: 5331-00-999-2723
FSC Code: 5331
MPN: 4594596

5331-00-702-2739 (459-3957)

NIIN: 00-702-2739
In stock
NSN: 5331-00-702-2739
FSC Code: 5331
MPN: 4593957

5331-01-358-6580 (5331PL0837758)

NIIN: 01-358-6580
In stock
NSN: 5331-01-358-6580
FSC Code: 5331
MPN: 5331PL0837758

5331-01-360-2987 (855002P0272)

NIIN: 01-360-2987
In stock
NSN: 5331-01-360-2987
FSC Code: 5331
MPN: 855002P0272

5331-01-389-1242 (15F2C-14IN)

NIIN: 01-389-1242
In stock
NSN: 5331-01-389-1242
FSC Code: 5331
MPN: 15F2C14IN

5331-01-434-6800 (15F2-10.00IN)

NIIN: 01-434-6800
In stock
NSN: 5331-01-434-6800
FSC Code: 5331
MPN: 15F21000IN

5331-00-935-6070 (458090-4)

NIIN: 00-935-6070
In stock
NSN: 5331-00-935-6070
FSC Code: 5331
MPN: 4580904

5331-01-422-3187 (15A00355-0000)

NIIN: 01-422-3187
In stock
NSN: 5331-01-422-3187
FSC Code: 5331
MPN: 15A003550000

5331-01-392-2704 (15A00289-0000)

NIIN: 01-392-2704
In stock
NSN: 5331-01-392-2704
FSC Code: 5331
MPN: 15A002890000

5331-01-437-0428 (15A00249-0000)

NIIN: 01-437-0428
In stock
NSN: 5331-01-437-0428
FSC Code: 5331
MPN: 15A002490000

5331-01-379-8131 (15A00202-0000)

NIIN: 01-379-8131
In stock
NSN: 5331-01-379-8131
FSC Code: 5331
MPN: 15A002020000

5331-01-315-8737 (45775-261-09)

NIIN: 01-315-8737
In stock
NSN: 5331-01-315-8737
FSC Code: 5331
MPN: 4577526109

5331-00-003-9159 (457-60-014)

NIIN: 00-003-9159
In stock
NSN: 5331-00-003-9159
FSC Code: 5331
MPN: 45760014

5331-00-403-7655 (457-5520)

NIIN: 00-403-7655
In stock
NSN: 5331-00-403-7655
FSC Code: 5331
MPN: 4575520

5331-00-139-0207 (457-27)

NIIN: 00-139-0207
In stock
NSN: 5331-00-139-0207
FSC Code: 5331
MPN: 45727

5331-01-522-6259 (159-9322)

NIIN: 01-522-6259
In stock
NSN: 5331-01-522-6259
FSC Code: 5331
MPN: 1599322

5331-00-446-0095 (45-68736)

NIIN: 00-446-0095
In stock
NSN: 5331-00-446-0095
FSC Code: 5331
MPN: 4568736

5331-00-446-2667 (45-68636)

NIIN: 00-446-2667
In stock
NSN: 5331-00-446-2667
FSC Code: 5331
MPN: 4568636

5331-01-332-3268 (456679-1)

NIIN: 01-332-3268
In stock
NSN: 5331-01-332-3268
FSC Code: 5331
MPN: 4566791

5331-01-225-5240 (4564904EB)

NIIN: 01-225-5240
In stock
NSN: 5331-01-225-5240
FSC Code: 5331
MPN: 4564904EB

5331-01-260-4677 (4564236EM)

NIIN: 01-260-4677
In stock
NSN: 5331-01-260-4677
FSC Code: 5331
MPN: 4564236EM

5331-01-317-6278 (4564-223EU)

NIIN: 01-317-6278
In stock
NSN: 5331-01-317-6278
FSC Code: 5331
MPN: 4564223EU

5331-01-183-0990 (4564-224,FG)

NIIN: 01-183-0990
In stock
NSN: 5331-01-183-0990
FSC Code: 5331
MPN: 4564224FG

5331-01-244-7585 (4564213EGG)

NIIN: 01-244-7585
In stock
NSN: 5331-01-244-7585
FSC Code: 5331
MPN: 4564213EGG

5331-01-249-3719 (4564222EGG)

NIIN: 01-249-3719
In stock
NSN: 5331-01-249-3719
FSC Code: 5331
MPN: 4564222EGG

5331-01-331-7153 (4564-228)

NIIN: 01-331-7153
In stock
NSN: 5331-01-331-7153
FSC Code: 5331
MPN: 4564228

5331-99-885-1130 (BS4518-1595-30)

NIIN: 99-885-1130
In stock
NSN: 5331-99-885-1130
FSC Code: 5331
MPN: BS4518159530

5331-01-331-7154 (4564-218)

NIIN: 01-331-7154
In stock
NSN: 5331-01-331-7154
FSC Code: 5331
MPN: 4564218

5331-01-258-9143 (4564222EM)

NIIN: 01-258-9143
In stock
NSN: 5331-01-258-9143
FSC Code: 5331
MPN: 4564222EM

5331-01-222-8975 (4564133EFF)

NIIN: 01-222-8975
In stock
NSN: 5331-01-222-8975
FSC Code: 5331
MPN: 4564133EFF

5331-01-278-1749 (4564216FG)

NIIN: 01-278-1749
In stock
NSN: 5331-01-278-1749
FSC Code: 5331
MPN: 4564216FG

5331-01-280-8008 (4564125FG)

NIIN: 01-280-8008
In stock
NSN: 5331-01-280-8008
FSC Code: 5331
MPN: 4564125FG

5331-01-225-5238 (4564-123EU)

NIIN: 01-225-5238
In stock
NSN: 5331-01-225-5238
FSC Code: 5331
MPN: 4564123EU

5331-01-280-8007 (4564120FG)

NIIN: 01-280-8007
In stock
NSN: 5331-01-280-8007
FSC Code: 5331
MPN: 4564120FG

5331-01-254-7283 (4564120EB)

NIIN: 01-254-7283
In stock
NSN: 5331-01-254-7283
FSC Code: 5331
MPN: 4564120EB

5331-01-258-9144 (4564114EM)

NIIN: 01-258-9144
In stock
NSN: 5331-01-258-9144
FSC Code: 5331
MPN: 4564114EM

5331-01-322-6922 (4564115EU)

NIIN: 01-322-6922
In stock
NSN: 5331-01-322-6922
FSC Code: 5331
MPN: 4564115EU