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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.

5331-00-143-7237 (6843333-127)

NIIN: 00-143-7237
In stock
NSN: 5331-00-143-7237
FSC Code: 5331
MPN: 6843333127

5331-00-925-7080 (6843333-124)

NIIN: 00-925-7080
In stock
NSN: 5331-00-925-7080
FSC Code: 5331
MPN: 6843333124

5331-00-243-7518 (6843333-260)

NIIN: 00-243-7518
In stock
NSN: 5331-00-243-7518
FSC Code: 5331
MPN: 6843333260

5331-00-143-7257 (6843333-155)

NIIN: 00-143-7257
In stock
NSN: 5331-00-143-7257
FSC Code: 5331
MPN: 6843333155

5331-00-143-7252 (6843333-146)

NIIN: 00-143-7252
In stock
NSN: 5331-00-143-7252
FSC Code: 5331
MPN: 6843333146

5331-00-143-7255 (6843333-151)

NIIN: 00-143-7255
In stock
NSN: 5331-00-143-7255
FSC Code: 5331
MPN: 6843333151

5331-00-454-0345 (6843333-021)

NIIN: 00-454-0345
In stock
NSN: 5331-00-454-0345
FSC Code: 5331
MPN: 6843333021

5331-01-025-0824 (6843333-111)

NIIN: 01-025-0824
In stock
NSN: 5331-01-025-0824
FSC Code: 5331
MPN: 6843333111

5331-00-004-6392 (6843333-012)

NIIN: 00-004-6392
In stock
NSN: 5331-00-004-6392
FSC Code: 5331
MPN: 6843333012

5331-00-179-6552 (6843333-024)

NIIN: 00-179-6552
In stock
NSN: 5331-00-179-6552
FSC Code: 5331
MPN: 6843333024

5331-00-411-8878 (6843333-116)

NIIN: 00-411-8878
In stock
NSN: 5331-00-411-8878
FSC Code: 5331
MPN: 6843333116

5331-01-134-1926 (684193C91)

NIIN: 01-134-1926
In stock
NSN: 5331-01-134-1926
FSC Code: 5331
MPN: 684193C91

5331-01-412-1708 (45A221-P22)

NIIN: 01-412-1708
In stock
NSN: 5331-01-412-1708
FSC Code: 5331
MPN: 45A221P22

5331-00-915-1542 (68-390)

NIIN: 00-915-1542
In stock
NSN: 5331-00-915-1542
FSC Code: 5331
MPN: 68390

5331-00-641-2278 (6-83576-1)

NIIN: 00-641-2278
In stock
NSN: 5331-00-641-2278
FSC Code: 5331
MPN: 6835761

5331-01-003-9690 (68-363)

NIIN: 01-003-9690
In stock
NSN: 5331-01-003-9690
FSC Code: 5331
MPN: 68363

5331-00-045-7901 (6-83576-2)

NIIN: 00-045-7901
In stock
NSN: 5331-00-045-7901
FSC Code: 5331
MPN: 6835762

5331-00-871-4726 (68-351)

NIIN: 00-871-4726
In stock
NSN: 5331-00-871-4726
FSC Code: 5331
MPN: 68351

5331-01-207-0266 (6831405-901)

NIIN: 01-207-0266
In stock
NSN: 5331-01-207-0266
FSC Code: 5331
MPN: 6831405901

5331-01-351-2727 (2AT917)

NIIN: 01-351-2727
In stock
NSN: 5331-01-351-2727
FSC Code: 5331
MPN: 2AT917

5331-01-517-2903 (2AT917)

NIIN: 01-517-2903
In stock
NSN: 5331-01-517-2903
FSC Code: 5331
MPN: 2AT917

5331-00-916-9281 (68-294)

NIIN: 00-916-9281
In stock
NSN: 5331-00-916-9281
FSC Code: 5331
MPN: 68294

5331-00-916-9278 (68-297)

NIIN: 00-916-9278
In stock
NSN: 5331-00-916-9278
FSC Code: 5331
MPN: 68297

5331-01-232-2370 (68-293)

NIIN: 01-232-2370
In stock
NSN: 5331-01-232-2370
FSC Code: 5331
MPN: 68293

5331-00-078-4706 (68-280)

NIIN: 00-078-4706
In stock
NSN: 5331-00-078-4706
FSC Code: 5331
MPN: 68280

5331-01-435-8000 (2A8-07969)

NIIN: 01-435-8000
In stock
NSN: 5331-01-435-8000
FSC Code: 5331
MPN: 2A807969

5331-00-936-8519 (6823412-271)

NIIN: 00-936-8519
In stock
NSN: 5331-00-936-8519
FSC Code: 5331
MPN: 6823412271

5331-00-737-0577 (682241SSS)

NIIN: 00-737-0577
In stock
NSN: 5331-00-737-0577
FSC Code: 5331
MPN: 682241SSS

5331-00-706-4768 (682241C)

NIIN: 00-706-4768
In stock
NSN: 5331-00-706-4768
FSC Code: 5331
MPN: 682241C

5331-00-526-8000 (682241M)

NIIN: 00-526-8000
In stock
NSN: 5331-00-526-8000
FSC Code: 5331
MPN: 682241M

5331-00-387-1044 (682241JJJ)

NIIN: 00-387-1044
In stock
NSN: 5331-00-387-1044
FSC Code: 5331
MPN: 682241JJJ

5331-00-526-8001 (682241L)

NIIN: 00-526-8001
In stock
NSN: 5331-00-526-8001
FSC Code: 5331
MPN: 682241L

5331-00-705-1898 (682241U)

NIIN: 00-705-1898
In stock
NSN: 5331-00-705-1898
FSC Code: 5331
MPN: 682241U

5331-00-705-1895 (682241AG)

NIIN: 00-705-1895
In stock
NSN: 5331-00-705-1895
FSC Code: 5331
MPN: 682241AG

5331-00-584-9778 (68-215)

NIIN: 00-584-9778
In stock
NSN: 5331-00-584-9778
FSC Code: 5331
MPN: 68215

5331-00-818-4354 (68-207)

NIIN: 00-818-4354
In stock
NSN: 5331-00-818-4354
FSC Code: 5331
MPN: 68207

5331-00-585-9320 (68-181)

NIIN: 00-585-9320
In stock
NSN: 5331-00-585-9320
FSC Code: 5331
MPN: 68181

5331-00-857-7419 (68-155)

NIIN: 00-857-7419
In stock
NSN: 5331-00-857-7419
FSC Code: 5331
MPN: 68155

5331-01-294-2182 (6815-002)

NIIN: 01-294-2182
In stock
NSN: 5331-01-294-2182
FSC Code: 5331
MPN: 6815002

5331-00-857-7420 (68-135)

NIIN: 00-857-7420
In stock
NSN: 5331-00-857-7420
FSC Code: 5331
MPN: 68135

5331-00-104-7619 (68-125)

NIIN: 00-104-7619
In stock
NSN: 5331-00-104-7619
FSC Code: 5331
MPN: 68125

5331-01-285-7732 (68-1243)

NIIN: 01-285-7732
In stock
NSN: 5331-01-285-7732
FSC Code: 5331
MPN: 681243

5331-01-285-7733 (68-1244)

NIIN: 01-285-7733
In stock
NSN: 5331-01-285-7733
FSC Code: 5331
MPN: 681244

5331-01-285-7104 (68-1241)

NIIN: 01-285-7104
In stock
NSN: 5331-01-285-7104
FSC Code: 5331
MPN: 681241

5331-01-349-6510 (AMS7270-011ES)

NIIN: 01-349-6510
In stock
NSN: 5331-01-349-6510
FSC Code: 5331
MPN: AMS7270011ES

5331-01-226-4435 (68111-045)

NIIN: 01-226-4435
In stock
NSN: 5331-01-226-4435
FSC Code: 5331
MPN: 68111045

5331-01-285-7105 (68-1132)

NIIN: 01-285-7105
In stock
NSN: 5331-01-285-7105
FSC Code: 5331
MPN: 681132

5331-01-432-3133 (299-921-050-360-004)

NIIN: 01-432-3133
In stock
NSN: 5331-01-432-3133
FSC Code: 5331
MPN: 299921050360004