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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.

5331-01-566-8598 (270-1528)

NIIN: 01-566-8598
In stock
NSN: 5331-01-566-8598
FSC Code: 5331
MPN: 2701528

5331-01-568-0935 (270-1540)

NIIN: 01-568-0935
In stock
NSN: 5331-01-568-0935
FSC Code: 5331
MPN: 2701540

5331-00-292-7545 (6505-3105264PC9)

NIIN: 00-292-7545
In stock
NSN: 5331-00-292-7545
FSC Code: 5331
MPN: 65053105264PC9

5331-01-323-1549 (650437-A)

NIIN: 01-323-1549
In stock
NSN: 5331-01-323-1549
FSC Code: 5331
MPN: 650437A

5331-00-893-1233 (65043-308-9)

NIIN: 00-893-1233
In stock
NSN: 5331-00-893-1233
FSC Code: 5331
MPN: 650433089

5331-01-160-4334 (6503-86PIECE307)

NIIN: 01-160-4334
In stock
NSN: 5331-01-160-4334
FSC Code: 5331
MPN: 650386PIECE307

5331-01-160-4332 (6503-86PIECE306)

NIIN: 01-160-4332
In stock
NSN: 5331-01-160-4332
FSC Code: 5331
MPN: 650386PIECE306

5331-99-103-4961 (742-103-4961)

NIIN: 99-103-4961
In stock
NSN: 5331-99-103-4961
FSC Code: 5331
MPN: 7421034961

5331-01-525-0160 (Y00023213)

NIIN: 01-525-0160
In stock
NSN: 5331-01-525-0160
FSC Code: 5331
MPN: Y00023213

5331-00-976-5003 (6500010-045)

NIIN: 00-976-5003
In stock
NSN: 5331-00-976-5003
FSC Code: 5331
MPN: 6500010045

5331-01-563-0731 (269A6032-003)

NIIN: 01-563-0731
In stock
NSN: 5331-01-563-0731
FSC Code: 5331
MPN: 269A6032003

5331-01-472-5012 (NAS1611-128A)

NIIN: 01-472-5012
In stock
NSN: 5331-01-472-5012
FSC Code: 5331
MPN: NAS1611128A

5331-01-292-7131 (64-MOD)

NIIN: 01-292-7131
In stock
NSN: 5331-01-292-7131
FSC Code: 5331
MPN: 64MOD

5331-01-351-5125 (269-7886)

NIIN: 01-351-5125
In stock
NSN: 5331-01-351-5125
FSC Code: 5331
MPN: 2697886

5331-00-912-5296 (64B30521)

NIIN: 00-912-5296
In stock
NSN: 5331-00-912-5296
FSC Code: 5331
MPN: 64B30521

5331-01-352-9338 (269-7885)

NIIN: 01-352-9338
In stock
NSN: 5331-01-352-9338
FSC Code: 5331
MPN: 2697885

5331-01-426-5358 (7458MS-987-T)

NIIN: 01-426-5358
In stock
NSN: 5331-01-426-5358
FSC Code: 5331
MPN: 7458MS987T

5331-01-190-1852 (649-788-164-0)

NIIN: 01-190-1852
In stock
NSN: 5331-01-190-1852
FSC Code: 5331
MPN: 6497881640

5331-00-532-6259 (6-49783)

NIIN: 00-532-6259
In stock
NSN: 5331-00-532-6259
FSC Code: 5331
MPN: 649783

5331-01-152-2454 (649-7589-14)

NIIN: 01-152-2454
In stock
NSN: 5331-01-152-2454
FSC Code: 5331
MPN: 649758914

5331-01-032-6491 (649-7561-13)

NIIN: 01-032-6491
In stock
NSN: 5331-01-032-6491
FSC Code: 5331
MPN: 649756113

5331-01-230-3414 (6495-7)

NIIN: 01-230-3414
In stock
NSN: 5331-01-230-3414
FSC Code: 5331
MPN: 64957

5331-01-468-4322 (268L62993-M00)

NIIN: 01-468-4322
In stock
NSN: 5331-01-468-4322
FSC Code: 5331
MPN: 268L62993M00

5331-01-255-3374 (6495-213)

NIIN: 01-255-3374
In stock
NSN: 5331-01-255-3374
FSC Code: 5331
MPN: 6495213

5331-00-185-0733 (6495-213)

NIIN: 00-185-0733
In stock
NSN: 5331-00-185-0733
FSC Code: 5331
MPN: 6495213

5331-01-230-3413 (6495-2)

NIIN: 01-230-3413
In stock
NSN: 5331-01-230-3413
FSC Code: 5331
MPN: 64952

5331-01-230-8832 (6495-4)

NIIN: 01-230-8832
In stock
NSN: 5331-01-230-8832
FSC Code: 5331
MPN: 64954

5331-01-228-8253 (6495-10)

NIIN: 01-228-8253
In stock
NSN: 5331-01-228-8253
FSC Code: 5331
MPN: 649510

5331-01-188-0897 (649-393-910-0)

NIIN: 01-188-0897
In stock
NSN: 5331-01-188-0897
FSC Code: 5331
MPN: 6493939100

5331-00-185-0732 (6495-10)

NIIN: 00-185-0732
In stock
NSN: 5331-00-185-0732
FSC Code: 5331
MPN: 649510

5331-01-188-0896 (649-393-914-0)

NIIN: 01-188-0896
In stock
NSN: 5331-01-188-0896
FSC Code: 5331
MPN: 6493939140

5331-01-204-2024 (649-393-902-0)

NIIN: 01-204-2024
In stock
NSN: 5331-01-204-2024
FSC Code: 5331
MPN: 6493939020

5331-01-449-2809 (2686-OOP)

NIIN: 01-449-2809
In stock
NSN: 5331-01-449-2809
FSC Code: 5331
MPN: 2686OOP

5331-01-188-0898 (649-393-110-0)

NIIN: 01-188-0898
In stock
NSN: 5331-01-188-0898
FSC Code: 5331
MPN: 6493931100

5331-01-240-0680 (649-393-021-0)

NIIN: 01-240-0680
In stock
NSN: 5331-01-240-0680
FSC Code: 5331
MPN: 6493930210

5331-01-330-2084 (6492884-25)

NIIN: 01-330-2084
In stock
NSN: 5331-01-330-2084
FSC Code: 5331
MPN: 649288425

5331-01-187-3846 (649-343-115-0)

NIIN: 01-187-3846
In stock
NSN: 5331-01-187-3846
FSC Code: 5331
MPN: 6493431150

5331-01-203-8083 (6492891-02)

NIIN: 01-203-8083
In stock
NSN: 5331-01-203-8083
FSC Code: 5331
MPN: 649289102

5331-00-802-4674 (6490B11)

NIIN: 00-802-4674
In stock
NSN: 5331-00-802-4674
FSC Code: 5331
MPN: 6490B11

5331-01-389-1021 (26799-T-316SS-1.0IN-PC14)

NIIN: 01-389-1021
In stock
NSN: 5331-01-389-1021
FSC Code: 5331
MPN: 26799T316SS10INPC14

5331-01-387-9927 (26799-T-316SS-0.375IN-PC14)

NIIN: 01-387-9927
In stock
NSN: 5331-01-387-9927
FSC Code: 5331
MPN: 26799T316SS0375INPC14

5331-01-344-5479 (2669964-106)

NIIN: 01-344-5479
In stock
NSN: 5331-01-344-5479
FSC Code: 5331
MPN: 2669964106

5331-01-517-1928 (2667998-218)

NIIN: 01-517-1928
In stock
NSN: 5331-01-517-1928
FSC Code: 5331
MPN: 2667998218

5331-01-359-1507 (2667646-121)

NIIN: 01-359-1507
In stock
NSN: 5331-01-359-1507
FSC Code: 5331
MPN: 2667646121

5331-01-482-8734 (2666850-147)

NIIN: 01-482-8734
In stock
NSN: 5331-01-482-8734
FSC Code: 5331
MPN: 2666850147

5331-01-482-8720 (2666850-6)

NIIN: 01-482-8720
In stock
NSN: 5331-01-482-8720
FSC Code: 5331
MPN: 26668506

5331-01-482-8717 (2666850-5)

NIIN: 01-482-8717
In stock
NSN: 5331-01-482-8717
FSC Code: 5331
MPN: 26668505

5331-01-482-8739 (2666850-228)

NIIN: 01-482-8739
In stock
NSN: 5331-01-482-8739
FSC Code: 5331
MPN: 2666850228