Skip to content

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.

5331-01-474-1544 (136-8641)

NIIN: 01-474-1544
In stock
NSN: 5331-01-474-1544
FSC Code: 5331
MPN: 1368641

5331-00-356-8656 (4064B)

NIIN: 00-356-8656
In stock
NSN: 5331-00-356-8656
FSC Code: 5331
MPN: 4064B

5331-01-564-9571 (136-7226)

NIIN: 01-564-9571
In stock
NSN: 5331-01-564-9571
FSC Code: 5331
MPN: 1367226

5331-01-564-9567 (136-7227)

NIIN: 01-564-9567
In stock
NSN: 5331-01-564-9567
FSC Code: 5331
MPN: 1367227

5331-00-167-5184 (406-0580)

NIIN: 00-167-5184
In stock
NSN: 5331-00-167-5184
FSC Code: 5331
MPN: 4060580

5331-00-175-2880 (406-0576)

NIIN: 00-175-2880
In stock
NSN: 5331-00-175-2880
FSC Code: 5331
MPN: 4060576

5331-01-354-2523 (2-136E515-80)

NIIN: 01-354-2523
In stock
NSN: 5331-01-354-2523
FSC Code: 5331
MPN: 2136E51580

5331-00-901-5096 (4056160-7)

NIIN: 00-901-5096
In stock
NSN: 5331-00-901-5096
FSC Code: 5331
MPN: 40561607

5331-01-490-0173 (AB722-0091-000)

NIIN: 01-490-0173
In stock
NSN: 5331-01-490-0173
FSC Code: 5331
MPN: AB7220091000

5331-01-450-4501 (801621-170)

NIIN: 01-450-4501
In stock
NSN: 5331-01-450-4501
FSC Code: 5331
MPN: 801621170

5331-00-843-3149 (405-387)

NIIN: 00-843-3149
In stock
NSN: 5331-00-843-3149
FSC Code: 5331
MPN: 405387

5331-00-704-9271 (405288-1)

NIIN: 00-704-9271
In stock
NSN: 5331-00-704-9271
FSC Code: 5331
MPN: 4052881

5331-01-473-6005 (13578N18-456C)

NIIN: 01-473-6005
In stock
NSN: 5331-01-473-6005
FSC Code: 5331
MPN: 13578N18456C

5331-01-483-4444 (1355-936)

NIIN: 01-483-4444
In stock
NSN: 5331-01-483-4444
FSC Code: 5331
MPN: 1355936

5331-01-521-5727 (5-012V747-75)

NIIN: 01-521-5727
In stock
NSN: 5331-01-521-5727
FSC Code: 5331
MPN: 5012V74775

5331-01-432-3087 (1355-207)

NIIN: 01-432-3087
In stock
NSN: 5331-01-432-3087
FSC Code: 5331
MPN: 1355207

5331-01-456-8243 (1355-059)

NIIN: 01-456-8243
In stock
NSN: 5331-01-456-8243
FSC Code: 5331
MPN: 1355059

5331-01-370-0558 (1355-056)

NIIN: 01-370-0558
In stock
NSN: 5331-01-370-0558
FSC Code: 5331
MPN: 1355056

5331-01-494-9575 (1354-116)

NIIN: 01-494-9575
In stock
NSN: 5331-01-494-9575
FSC Code: 5331
MPN: 1354116

5331-00-095-6798 (40-4N100)

NIIN: 00-095-6798
In stock
NSN: 5331-00-095-6798
FSC Code: 5331
MPN: 404N100

5331-00-211-9383 (40-4N362)

NIIN: 00-211-9383
In stock
NSN: 5331-00-211-9383
FSC Code: 5331
MPN: 404N362

5331-01-341-2873 (1354-180)

NIIN: 01-341-2873
In stock
NSN: 5331-01-341-2873
FSC Code: 5331
MPN: 1354180

5331-01-370-3754 (1354-069)

NIIN: 01-370-3754
In stock
NSN: 5331-01-370-3754
FSC Code: 5331
MPN: 1354069

5331-00-451-0303 (40-4N212)

NIIN: 00-451-0303
In stock
NSN: 5331-00-451-0303
FSC Code: 5331
MPN: 404N212

5331-01-395-4758 (13-540-044)

NIIN: 01-395-4758
In stock
NSN: 5331-01-395-4758
FSC Code: 5331
MPN: 13540044

5331-01-395-4755 (13-540-044)

NIIN: 01-395-4755
In stock
NSN: 5331-01-395-4755
FSC Code: 5331
MPN: 13540044

5331-01-494-9574 (1354-080)

NIIN: 01-494-9574
In stock
NSN: 5331-01-494-9574
FSC Code: 5331
MPN: 1354080

5331-01-395-4754 (13-540-044)

NIIN: 01-395-4754
In stock
NSN: 5331-01-395-4754
FSC Code: 5331
MPN: 13540044

5331-01-395-5128 (13-540-044)

NIIN: 01-395-5128
In stock
NSN: 5331-01-395-5128
FSC Code: 5331
MPN: 13540044

5331-01-485-0720 (2-008V737-65)

NIIN: 01-485-0720
In stock
NSN: 5331-01-485-0720
FSC Code: 5331
MPN: 2008V73765

5331-01-164-0901 (404833-2-A)

NIIN: 01-164-0901
In stock
NSN: 5331-01-164-0901
FSC Code: 5331
MPN: 4048332A

5331-01-508-7481 (13522-ZW5-000)

NIIN: 01-508-7481
In stock
NSN: 5331-01-508-7481
FSC Code: 5331
MPN: 13522ZW5000

5331-01-159-8383 (404833-1-C)

NIIN: 01-159-8383
In stock
NSN: 5331-01-159-8383
FSC Code: 5331
MPN: 4048331C

5331-01-029-2345 (404729-3)

NIIN: 01-029-2345
In stock
NSN: 5331-01-029-2345
FSC Code: 5331
MPN: 4047293

5331-01-029-2346 (404729-1)

NIIN: 01-029-2346
In stock
NSN: 5331-01-029-2346
FSC Code: 5331
MPN: 4047291

5331-01-029-9630 (404729-2)

NIIN: 01-029-9630
In stock
NSN: 5331-01-029-9630
FSC Code: 5331
MPN: 4047292

5331-01-414-3048 (135-085397)

NIIN: 01-414-3048
In stock
NSN: 5331-01-414-3048
FSC Code: 5331
MPN: 135085397

5331-01-566-6433 (CMI35-008727)

NIIN: 01-566-6433
In stock
NSN: 5331-01-566-6433
FSC Code: 5331
MPN: CMI35008727

5331-00-843-8783 (404-547)

NIIN: 00-843-8783
In stock
NSN: 5331-00-843-8783
FSC Code: 5331
MPN: 404547

5331-01-123-3302 (40444-4)

NIIN: 01-123-3302
In stock
NSN: 5331-01-123-3302
FSC Code: 5331
MPN: 404444

5331-01-535-3097 (135.02.00-32)

NIIN: 01-535-3097
In stock
NSN: 5331-01-535-3097
FSC Code: 5331
MPN: 135020032

5331-01-268-6817 (404080-B)

NIIN: 01-268-6817
In stock
NSN: 5331-01-268-6817
FSC Code: 5331
MPN: 404080B

5331-01-280-7513 (404080-J)

NIIN: 01-280-7513
In stock
NSN: 5331-01-280-7513
FSC Code: 5331
MPN: 404080J

5331-01-281-0799 (404080-0)

NIIN: 01-281-0799
In stock
NSN: 5331-01-281-0799
FSC Code: 5331
MPN: 4040800

5331-01-269-8574 (404080-F)

NIIN: 01-269-8574
In stock
NSN: 5331-01-269-8574
FSC Code: 5331
MPN: 404080F

5331-00-291-3365 (4040419-6)

NIIN: 00-291-3365
In stock
NSN: 5331-00-291-3365
FSC Code: 5331
MPN: 40404196

5331-01-190-1864 (40405-1)

NIIN: 01-190-1864
In stock
NSN: 5331-01-190-1864
FSC Code: 5331
MPN: 404051

5331-01-151-4929 (40402-09)

NIIN: 01-151-4929
In stock
NSN: 5331-01-151-4929
FSC Code: 5331
MPN: 4040209