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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.

5331-01-315-8737 (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

5331-01-317-6279 (4564-115,EU)

NIIN: 01-317-6279
In stock
NSN: 5331-01-317-6279
FSC Code: 5331
MPN: 4564115EU

5331-01-331-7152 (4562-228)

NIIN: 01-331-7152
In stock
NSN: 5331-01-331-7152
FSC Code: 5331
MPN: 4562228

5331-01-312-0157 (4562-112003)

NIIN: 01-312-0157
In stock
NSN: 5331-01-312-0157
FSC Code: 5331
MPN: 4562112003

5331-01-292-4008 (4557-ND)

NIIN: 01-292-4008
In stock
NSN: 5331-01-292-4008
FSC Code: 5331
MPN: 4557ND

5331-01-142-3510 (45528345-80)

NIIN: 01-142-3510
In stock
NSN: 5331-01-142-3510
FSC Code: 5331
MPN: 4552834580

5331-01-296-7692 (45528345-60)

NIIN: 01-296-7692
In stock
NSN: 5331-01-296-7692
FSC Code: 5331
MPN: 4552834560

5331-01-564-5863 (1590ORING-100)

NIIN: 01-564-5863
In stock
NSN: 5331-01-564-5863
FSC Code: 5331
MPN: 1590ORING100

5331-01-424-1453 (65107-K-992)

NIIN: 01-424-1453
In stock
NSN: 5331-01-424-1453
FSC Code: 5331
MPN: 65107K992

5331-01-173-3420 (45506-15)

NIIN: 01-173-3420
In stock
NSN: 5331-01-173-3420
FSC Code: 5331
MPN: 4550615

5331-01-173-3419 (45506-15)

NIIN: 01-173-3419
In stock
NSN: 5331-01-173-3419
FSC Code: 5331
MPN: 4550615

5331-01-173-0156 (455-0376)

NIIN: 01-173-0156
In stock
NSN: 5331-01-173-0156
FSC Code: 5331
MPN: 4550376

5331-01-441-6723 (158882PL)

NIIN: 01-441-6723
In stock
NSN: 5331-01-441-6723
FSC Code: 5331
MPN: 158882PL

5331-01-527-3419 (158860805NVI)

NIIN: 01-527-3419
In stock
NSN: 5331-01-527-3419
FSC Code: 5331
MPN: 158860805NVI

5331-01-527-3425 (158860815NVI)

NIIN: 01-527-3425
In stock
NSN: 5331-01-527-3425
FSC Code: 5331
MPN: 158860815NVI

5331-01-527-3399 (158861402NBN70)

NIIN: 01-527-3399
In stock
NSN: 5331-01-527-3399
FSC Code: 5331
MPN: 158861402NBN70

5331-01-527-3412 (158860802NVI)

NIIN: 01-527-3412
In stock
NSN: 5331-01-527-3412
FSC Code: 5331
MPN: 158860802NVI

5331-01-527-3406 (158860117NBN70)

NIIN: 01-527-3406
In stock
NSN: 5331-01-527-3406
FSC Code: 5331
MPN: 158860117NBN70

5331-00-838-8596 (45427996-09)

NIIN: 00-838-8596
In stock
NSN: 5331-00-838-8596
FSC Code: 5331
MPN: 4542799609

5331-01-527-3403 (158860116NBN70)

NIIN: 01-527-3403
In stock
NSN: 5331-01-527-3403
FSC Code: 5331
MPN: 158860116NBN70

5331-01-527-3392 (158860404NBN70)

NIIN: 01-527-3392
In stock
NSN: 5331-01-527-3392
FSC Code: 5331
MPN: 158860404NBN70

5331-01-527-3420 (158860807NVI)

NIIN: 01-527-3420
In stock
NSN: 5331-01-527-3420
FSC Code: 5331
MPN: 158860807NVI

5331-01-527-3394 (158860702NBN70)

NIIN: 01-527-3394
In stock
NSN: 5331-01-527-3394
FSC Code: 5331
MPN: 158860702NBN70