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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.

5331-01-371-5125 (SA-1247-C)

NIIN: 01-371-5125
In stock
NSN: 5331-01-371-5125
FSC Code: 5331
MPN: SA1247C

5331-01-267-9309 (37-1801-1)

NIIN: 01-267-9309
In stock
NSN: 5331-01-267-9309
FSC Code: 5331
MPN: 3718011

5331-01-479-2586 (12-22-1822)

NIIN: 01-479-2586
In stock
NSN: 5331-01-479-2586
FSC Code: 5331
MPN: 12221822

5331-01-346-9401 (1222180322-38)

NIIN: 01-346-9401
In stock
NSN: 5331-01-346-9401
FSC Code: 5331
MPN: 122218032238

5331-01-346-9402 (1222180322-28)

NIIN: 01-346-9402
In stock
NSN: 5331-01-346-9402
FSC Code: 5331
MPN: 122218032228

5331-01-439-5424 (12-2201-249)

NIIN: 01-439-5424
In stock
NSN: 5331-01-439-5424
FSC Code: 5331
MPN: 122201249

5331-01-439-5421 (12-2201-116)

NIIN: 01-439-5421
In stock
NSN: 5331-01-439-5421
FSC Code: 5331
MPN: 122201116

5331-01-110-8601 (37120-32)

NIIN: 01-110-8601
In stock
NSN: 5331-01-110-8601
FSC Code: 5331
MPN: 3712032

5331-01-479-2582 (12-21-1822)

NIIN: 01-479-2582
In stock
NSN: 5331-01-479-2582
FSC Code: 5331
MPN: 12211822

5331-01-274-2804 (370920R1)

NIIN: 01-274-2804
In stock
NSN: 5331-01-274-2804
FSC Code: 5331
MPN: 370920R1

5331-01-479-2576 (12-20-1822)

NIIN: 01-479-2576
In stock
NSN: 5331-01-479-2576
FSC Code: 5331
MPN: 12201822

5331-01-418-9715 (1220-0021)

NIIN: 01-418-9715
In stock
NSN: 5331-01-418-9715
FSC Code: 5331
MPN: 12200021

5331-01-315-2130 (370380-13-4)

NIIN: 01-315-2130
In stock
NSN: 5331-01-315-2130
FSC Code: 5331
MPN: 370380134

5331-01-315-2132 (370380-25-8)

NIIN: 01-315-2132
In stock
NSN: 5331-01-315-2132
FSC Code: 5331
MPN: 370380258

5331-01-315-2131 (370380-24-0)

NIIN: 01-315-2131
In stock
NSN: 5331-01-315-2131
FSC Code: 5331
MPN: 370380240

5331-01-288-6386 (37013-27)

NIIN: 01-288-6386
In stock
NSN: 5331-01-288-6386
FSC Code: 5331
MPN: 3701327

5331-00-599-3152 (3700-254REVBPC55)

NIIN: 00-599-3152
In stock
NSN: 5331-00-599-3152
FSC Code: 5331
MPN: 3700254REVBPC55

5331-00-713-5374 (37002-75)

NIIN: 00-713-5374
In stock
NSN: 5331-00-713-5374
FSC Code: 5331
MPN: 3700275

5331-01-479-2574 (12-19-1822)

NIIN: 01-479-2574
In stock
NSN: 5331-01-479-2574
FSC Code: 5331
MPN: 12191822

5331-00-412-4455 (3-6S604-7)

NIIN: 00-412-4455
In stock
NSN: 5331-00-412-4455
FSC Code: 5331
MPN: 36S6047

5331-01-006-9487 (3-6S613-60)

NIIN: 01-006-9487
In stock
NSN: 5331-01-006-9487
FSC Code: 5331
MPN: 36S61360

5331-01-546-8510 (YM121850-51960)

NIIN: 01-546-8510
In stock
NSN: 5331-01-546-8510
FSC Code: 5331
MPN: YM12185051960

5331-01-487-6542 (121-8140)

NIIN: 01-487-6542
In stock
NSN: 5331-01-487-6542
FSC Code: 5331
MPN: 1218140

5331-00-801-3354 (3-6N304-7)

NIIN: 00-801-3354
In stock
NSN: 5331-00-801-3354
FSC Code: 5331
MPN: 36N3047

5331-00-966-9138 (3-6N219-7)

NIIN: 00-966-9138
In stock
NSN: 5331-00-966-9138
FSC Code: 5331
MPN: 36N2197

5331-01-479-2572 (12-18-1822)

NIIN: 01-479-2572
In stock
NSN: 5331-01-479-2572
FSC Code: 5331
MPN: 12181822

5331-01-069-5247 (3-6N552-90)

NIIN: 01-069-5247
In stock
NSN: 5331-01-069-5247
FSC Code: 5331
MPN: 36N55290

5331-01-556-0038 (12180510CO-44)

NIIN: 01-556-0038
In stock
NSN: 5331-01-556-0038
FSC Code: 5331
MPN: 12180510CO44

5331-01-483-1642 (12180510C0-26)

NIIN: 01-483-1642
In stock
NSN: 5331-01-483-1642
FSC Code: 5331
MPN: 12180510C026

5331-01-468-7588 (12180510C0-14)

NIIN: 01-468-7588
In stock
NSN: 5331-01-468-7588
FSC Code: 5331
MPN: 12180510C014

5331-01-556-0053 (12180510CO-32)

NIIN: 01-556-0053
In stock
NSN: 5331-01-556-0053
FSC Code: 5331
MPN: 12180510CO32

5331-01-556-0033 (12180510CO-40)

NIIN: 01-556-0033
In stock
NSN: 5331-01-556-0033
FSC Code: 5331
MPN: 12180510CO40

5331-01-468-7589 (12180510C0-07)

NIIN: 01-468-7589
In stock
NSN: 5331-01-468-7589
FSC Code: 5331
MPN: 12180510C007

5331-01-479-2568 (12-17-1822)

NIIN: 01-479-2568
In stock
NSN: 5331-01-479-2568
FSC Code: 5331
MPN: 12171822

5331-01-122-6204 (36C717512P3)

NIIN: 01-122-6204
In stock
NSN: 5331-01-122-6204
FSC Code: 5331
MPN: 36C717512P3

5331-01-025-7792 (3-6C147-7)

NIIN: 01-025-7792
In stock
NSN: 5331-01-025-7792
FSC Code: 5331
MPN: 36C1477

5331-01-130-8424 (36B423609P1)

NIIN: 01-130-8424
In stock
NSN: 5331-01-130-8424
FSC Code: 5331
MPN: 36B423609P1

5331-01-479-2564 (12-16-1822)

NIIN: 01-479-2564
In stock
NSN: 5331-01-479-2564
FSC Code: 5331
MPN: 12161822

5331-01-529-0305 (12-160)

NIIN: 01-529-0305
In stock
NSN: 5331-01-529-0305
FSC Code: 5331
MPN: 12160

5331-01-168-9112 (36A228239P3)

NIIN: 01-168-9112
In stock
NSN: 5331-01-168-9112
FSC Code: 5331
MPN: 36A228239P3

5331-00-445-5095 (36A223025AAP1)

NIIN: 00-445-5095
In stock
NSN: 5331-00-445-5095
FSC Code: 5331
MPN: 36A223025AAP1

5331-01-047-2908 (36A222444AAP40)

NIIN: 01-047-2908
In stock
NSN: 5331-01-047-2908
FSC Code: 5331
MPN: 36A222444AAP40

5331-01-525-8481 (6672-661-000)

NIIN: 01-525-8481
In stock
NSN: 5331-01-525-8481
FSC Code: 5331
MPN: 6672661000

5331-00-946-4867 (369A8006)

NIIN: 00-946-4867
In stock
NSN: 5331-00-946-4867
FSC Code: 5331
MPN: 369A8006

5331-00-097-2602 (3695-03REVALINE976)

NIIN: 00-097-2602
In stock
NSN: 5331-00-097-2602
FSC Code: 5331
MPN: 369503REVALINE976

5331-01-293-5266 (369384R1)

NIIN: 01-293-5266
In stock
NSN: 5331-01-293-5266
FSC Code: 5331
MPN: 369384R1

5331-00-397-5714 (3689PC13)

NIIN: 00-397-5714
In stock
NSN: 5331-00-397-5714
FSC Code: 5331
MPN: 3689PC13

5331-01-457-5794 (121-4068)

NIIN: 01-457-5794
In stock
NSN: 5331-01-457-5794
FSC Code: 5331
MPN: 1214068