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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.

5331-01-499-1380 (649-788-415-0)

NIIN: 01-499-1380
In stock
NSN: 5331-01-499-1380
FSC Code: 5331
MPN: 6497884150

5331-01-194-4705 (CA14481)

NIIN: 01-194-4705
In stock
NSN: 5331-01-194-4705
FSC Code: 5331
MPN: CA14481

5331-01-136-6137 (CA13847-PC255)

NIIN: 01-136-6137
In stock
NSN: 5331-01-136-6137
FSC Code: 5331
MPN: CA13847PC255

5331-01-217-6998 (CA14263)

NIIN: 01-217-6998
In stock
NSN: 5331-01-217-6998
FSC Code: 5331
MPN: CA14263

5331-01-193-9392 (CA11554)

NIIN: 01-193-9392
In stock
NSN: 5331-01-193-9392
FSC Code: 5331
MPN: CA11554

5331-01-033-2536 (CA110-239)

NIIN: 01-033-2536
In stock
NSN: 5331-01-033-2536
FSC Code: 5331
MPN: CA110239

5331-01-188-7632 (CA11057-255)

NIIN: 01-188-7632
In stock
NSN: 5331-01-188-7632
FSC Code: 5331
MPN: CA11057255

5331-01-195-8876 (CA10976-70)

NIIN: 01-195-8876
In stock
NSN: 5331-01-195-8876
FSC Code: 5331
MPN: CA1097670

5331-01-199-6262 (CA10999)

NIIN: 01-199-6262
In stock
NSN: 5331-01-199-6262
FSC Code: 5331
MPN: CA10999

5331-01-079-9955 (CA-048591)

NIIN: 01-079-9955
In stock
NSN: 5331-01-079-9955
FSC Code: 5331
MPN: CA048591

5331-01-458-8138 (645001Q237)

NIIN: 01-458-8138
In stock
NSN: 5331-01-458-8138
FSC Code: 5331
MPN: 645001Q237

5331-01-018-7133 (C9NN-C855-B)

NIIN: 01-018-7133
In stock
NSN: 5331-01-018-7133
FSC Code: 5331
MPN: C9NNC855B

5331-01-358-7947 (6445Z88)

NIIN: 01-358-7947
In stock
NSN: 5331-01-358-7947
FSC Code: 5331
MPN: 6445Z88

5331-01-379-0526 (6445Z89)

NIIN: 01-379-0526
In stock
NSN: 5331-01-379-0526
FSC Code: 5331
MPN: 6445Z89

5331-01-411-2363 (64-46-15)

NIIN: 01-411-2363
In stock
NSN: 5331-01-411-2363
FSC Code: 5331
MPN: 644615

5331-01-472-7267 (644260-403)

NIIN: 01-472-7267
In stock
NSN: 5331-01-472-7267
FSC Code: 5331
MPN: 644260403

5331-01-536-0168 (644260-401)

NIIN: 01-536-0168
In stock
NSN: 5331-01-536-0168
FSC Code: 5331
MPN: 644260401

5331-01-225-8560 (C93601-810018)

NIIN: 01-225-8560
In stock
NSN: 5331-01-225-8560
FSC Code: 5331
MPN: C93601810018

5331-01-225-8561 (C93602-870055)

NIIN: 01-225-8561
In stock
NSN: 5331-01-225-8561
FSC Code: 5331
MPN: C93602870055

5331-00-291-2394 (C93174ISSUE2)

NIIN: 00-291-2394
In stock
NSN: 5331-00-291-2394
FSC Code: 5331
MPN: C93174ISSUE2

5331-00-830-2683 (C914-41-70)

NIIN: 00-830-2683
In stock
NSN: 5331-00-830-2683
FSC Code: 5331
MPN: C9144170

5331-00-913-6598 (C914-4-70)

NIIN: 00-913-6598
In stock
NSN: 5331-00-913-6598
FSC Code: 5331
MPN: C914470

5331-00-279-9319 (C90ST0109-03)

NIIN: 00-279-9319
In stock
NSN: 5331-00-279-9319
FSC Code: 5331
MPN: C90ST010903

5331-01-190-1876 (C9)

NIIN: 01-190-1876
In stock
NSN: 5331-01-190-1876
FSC Code: 5331
MPN: C9

5331-01-329-3766 (C-89-004)

NIIN: 01-329-3766
In stock
NSN: 5331-01-329-3766
FSC Code: 5331
MPN: C89004

5331-01-210-5691 (C867-7301)

NIIN: 01-210-5691
In stock
NSN: 5331-01-210-5691
FSC Code: 5331
MPN: C8677301

5331-01-264-3744 (C-8529042)

NIIN: 01-264-3744
In stock
NSN: 5331-01-264-3744
FSC Code: 5331
MPN: C8529042

5331-01-066-9264 (C-8541678)

NIIN: 01-066-9264
In stock
NSN: 5331-01-066-9264
FSC Code: 5331
MPN: C8541678

5331-01-255-6586 (C7NN-9H515-A)

NIIN: 01-255-6586
In stock
NSN: 5331-01-255-6586
FSC Code: 5331
MPN: C7NN9H515A

5331-00-141-4231 (C746575SUB2PT8)

NIIN: 00-141-4231
In stock
NSN: 5331-00-141-4231
FSC Code: 5331
MPN: C746575SUB2PT8

5331-00-171-6069 (C742595-99REV19)

NIIN: 00-171-6069
In stock
NSN: 5331-00-171-6069
FSC Code: 5331
MPN: C74259599REV19

5331-00-599-6485 (C742595PT87)

NIIN: 00-599-6485
In stock
NSN: 5331-00-599-6485
FSC Code: 5331
MPN: C742595PT87

5331-00-297-2467 (C742595-168)

NIIN: 00-297-2467
In stock
NSN: 5331-00-297-2467
FSC Code: 5331
MPN: C742595168

5331-01-225-8559 (C70123-66130)

NIIN: 01-225-8559
In stock
NSN: 5331-01-225-8559
FSC Code: 5331
MPN: C7012366130

5331-01-210-6557 (C70111-11460)

NIIN: 01-210-6557
In stock
NSN: 5331-01-210-6557
FSC Code: 5331
MPN: C7011111460

5331-01-192-2122 (C7)

NIIN: 01-192-2122
In stock
NSN: 5331-01-192-2122
FSC Code: 5331
MPN: C7

5331-12-192-7298 (6-414-0310)

NIIN: 12-192-7298
In stock
NSN: 5331-12-192-7298
FSC Code: 5331
MPN: 64140310

5331-01-053-1452 (C68973-112)

NIIN: 01-053-1452
In stock
NSN: 5331-01-053-1452
FSC Code: 5331
MPN: C68973112

5331-00-527-8700 (C685977-3)

NIIN: 00-527-8700
In stock
NSN: 5331-00-527-8700
FSC Code: 5331
MPN: C6859773

5331-00-527-8701 (C685977-1)

NIIN: 00-527-8701
In stock
NSN: 5331-00-527-8701
FSC Code: 5331
MPN: C6859771

5331-00-527-8702 (C685977-2)

NIIN: 00-527-8702
In stock
NSN: 5331-00-527-8702
FSC Code: 5331
MPN: C6859772

5331-01-338-5552 (C65)

NIIN: 01-338-5552
In stock
NSN: 5331-01-338-5552
FSC Code: 5331
MPN: C65

5331-01-443-5724 (64-0976-71)

NIIN: 01-443-5724
In stock
NSN: 5331-01-443-5724
FSC Code: 5331
MPN: 64097671

5331-01-278-7621 (C640)

NIIN: 01-278-7621
In stock
NSN: 5331-01-278-7621
FSC Code: 5331
MPN: C640

5331-01-420-6756 (D-452-119)

NIIN: 01-420-6756
In stock
NSN: 5331-01-420-6756
FSC Code: 5331
MPN: D452119

5331-01-524-7494 (640913-002)

NIIN: 01-524-7494
In stock
NSN: 5331-01-524-7494
FSC Code: 5331
MPN: 640913002

5331-01-443-5723 (64-0754-71)

NIIN: 01-443-5723
In stock
NSN: 5331-01-443-5723
FSC Code: 5331
MPN: 64075471

5331-01-536-0167 (640829-006)

NIIN: 01-536-0167
In stock
NSN: 5331-01-536-0167
FSC Code: 5331
MPN: 640829006