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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.

5331-01-152-8843 (004012ED)

NIIN: 01-152-8843
In stock
NSN: 5331-01-152-8843
FSC Code: 5331
MPN: 004012ED

5331-01-195-8877 (004-0135-50)

NIIN: 01-195-8877
In stock
NSN: 5331-01-195-8877
FSC Code: 5331
MPN: 004013550

5331-01-268-2322 (0040141463)

NIIN: 01-268-2322
In stock
NSN: 5331-01-268-2322
FSC Code: 5331
MPN: 0040141463

5331-00-584-1840 (004014EB)

NIIN: 00-584-1840
In stock
NSN: 5331-00-584-1840
FSC Code: 5331
MPN: 004014EB

5331-01-127-6942 (004014EE)

NIIN: 01-127-6942
In stock
NSN: 5331-01-127-6942
FSC Code: 5331
MPN: 004014EE

5331-01-194-6113 (004-0252-50)

NIIN: 01-194-6113
In stock
NSN: 5331-01-194-6113
FSC Code: 5331
MPN: 004025250

5331-01-271-8670 (004115)

NIIN: 01-271-8670
In stock
NSN: 5331-01-271-8670
FSC Code: 5331
MPN: 004115

5331-01-155-1777 (004115ED)

NIIN: 01-155-1777
In stock
NSN: 5331-01-155-1777
FSC Code: 5331
MPN: 004115ED

5331-01-122-3228 (004114EE)

NIIN: 01-122-3228
In stock
NSN: 5331-01-122-3228
FSC Code: 5331
MPN: 004114EE

5331-00-618-0801 (004114)

NIIN: 00-618-0801
In stock
NSN: 5331-00-618-0801
FSC Code: 5331
MPN: 004114

5331-01-101-6072 (004213)

NIIN: 01-101-6072
In stock
NSN: 5331-01-101-6072
FSC Code: 5331
MPN: 004213

5331-01-091-2616 (004213)

NIIN: 01-091-2616
In stock
NSN: 5331-01-091-2616
FSC Code: 5331
MPN: 004213

5331-01-155-2017 (004215)

NIIN: 01-155-2017
In stock
NSN: 5331-01-155-2017
FSC Code: 5331
MPN: 004215

5331-00-166-8405 (004218)

NIIN: 00-166-8405
In stock
NSN: 5331-00-166-8405
FSC Code: 5331
MPN: 004218

5331-01-155-4279 (004215ED)

NIIN: 01-155-4279
In stock
NSN: 5331-01-155-4279
FSC Code: 5331
MPN: 004215ED

5331-01-154-9465 (004219)

NIIN: 01-154-9465
In stock
NSN: 5331-01-154-9465
FSC Code: 5331
MPN: 004219

5331-01-273-2300 (004215EB)

NIIN: 01-273-2300
In stock
NSN: 5331-01-273-2300
FSC Code: 5331
MPN: 004215EB

5331-01-097-8049 (00422510)

NIIN: 01-097-8049
In stock
NSN: 5331-01-097-8049
FSC Code: 5331
MPN: 00422510

5331-01-153-1338 (004225ED)

NIIN: 01-153-1338
In stock
NSN: 5331-01-153-1338
FSC Code: 5331
MPN: 004225ED

5331-01-253-3729 (004240/8)

NIIN: 01-253-3729
In stock
NSN: 5331-01-253-3729
FSC Code: 5331
MPN: 0042408

5331-01-330-2366 (004253)

NIIN: 01-330-2366
In stock
NSN: 5331-01-330-2366
FSC Code: 5331
MPN: 004253

5331-01-243-0169 (004246)

NIIN: 01-243-0169
In stock
NSN: 5331-01-243-0169
FSC Code: 5331
MPN: 004246

5331-01-277-9787 (004255)

NIIN: 01-277-9787
In stock
NSN: 5331-01-277-9787
FSC Code: 5331
MPN: 004255

5331-01-126-0851 (004247)

NIIN: 01-126-0851
In stock
NSN: 5331-01-126-0851
FSC Code: 5331
MPN: 004247

5331-01-129-0631 (00426-045)

NIIN: 01-129-0631
In stock
NSN: 5331-01-129-0631
FSC Code: 5331
MPN: 00426045

5331-01-292-4005 (004256)

NIIN: 01-292-4005
In stock
NSN: 5331-01-292-4005
FSC Code: 5331
MPN: 004256

5331-01-240-1639 (004273)

NIIN: 01-240-1639
In stock
NSN: 5331-01-240-1639
FSC Code: 5331
MPN: 004273

5331-01-145-6897 (00426H)

NIIN: 01-145-6897
In stock
NSN: 5331-01-145-6897
FSC Code: 5331
MPN: 00426H

5331-01-123-7031 (004281)

NIIN: 01-123-7031
In stock
NSN: 5331-01-123-7031
FSC Code: 5331
MPN: 004281

5331-01-125-4193 (004283)

NIIN: 01-125-4193
In stock
NSN: 5331-01-125-4193
FSC Code: 5331
MPN: 004283

5331-01-123-6403 (004299)

NIIN: 01-123-6403
In stock
NSN: 5331-01-123-6403
FSC Code: 5331
MPN: 004299

5331-01-242-0707 (004289)

NIIN: 01-242-0707
In stock
NSN: 5331-01-242-0707
FSC Code: 5331
MPN: 004289

5331-01-246-3903 (004294)

NIIN: 01-246-3903
In stock
NSN: 5331-01-246-3903
FSC Code: 5331
MPN: 004294

5331-01-145-6898 (00429B)

NIIN: 01-145-6898
In stock
NSN: 5331-01-145-6898
FSC Code: 5331
MPN: 00429B

5331-01-145-0712 (00428)

NIIN: 01-145-0712
In stock
NSN: 5331-01-145-0712
FSC Code: 5331
MPN: 00428

5331-01-241-6135 (004298)

NIIN: 01-241-6135
In stock
NSN: 5331-01-241-6135
FSC Code: 5331
MPN: 004298

5331-01-305-3853 (00430K)

NIIN: 01-305-3853
In stock
NSN: 5331-01-305-3853
FSC Code: 5331
MPN: 00430K

5331-01-241-2732 (004315)

NIIN: 01-241-2732
In stock
NSN: 5331-01-241-2732
FSC Code: 5331
MPN: 004315

5331-01-121-0279 (004335)

NIIN: 01-121-0279
In stock
NSN: 5331-01-121-0279
FSC Code: 5331
MPN: 004335

5331-01-241-2731 (004345)

NIIN: 01-241-2731
In stock
NSN: 5331-01-241-2731
FSC Code: 5331
MPN: 004345

5331-01-266-3948 (00435-0002)

NIIN: 01-266-3948
In stock
NSN: 5331-01-266-3948
FSC Code: 5331
MPN: 004350002

5331-01-140-7945 (004377)

NIIN: 01-140-7945
In stock
NSN: 5331-01-140-7945
FSC Code: 5331
MPN: 004377

5331-01-086-7730 (00439610)

NIIN: 01-086-7730
In stock
NSN: 5331-01-086-7730
FSC Code: 5331
MPN: 00439610

5331-01-241-0788 (004394)

NIIN: 01-241-0788
In stock
NSN: 5331-01-241-0788
FSC Code: 5331
MPN: 004394

5331-01-272-5276 (00441-18750-0001)

NIIN: 01-272-5276
In stock
NSN: 5331-01-272-5276
FSC Code: 5331
MPN: 00441187500001

5331-00-352-0327 (00442)

NIIN: 00-352-0327
In stock
NSN: 5331-00-352-0327
FSC Code: 5331
MPN: 00442

5331-01-232-5099 (00442E)

NIIN: 01-232-5099
In stock
NSN: 5331-01-232-5099
FSC Code: 5331
MPN: 00442E

5331-01-315-8732 (004445)

NIIN: 01-315-8732
In stock
NSN: 5331-01-315-8732
FSC Code: 5331
MPN: 004445