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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.

5331-01-346-2913 (674772C1)

NIIN: 01-346-2913
In stock
NSN: 5331-01-346-2913
FSC Code: 5331
MPN: 674772C1

5331-01-283-7781 (CR-130A)

NIIN: 01-283-7781
In stock
NSN: 5331-01-283-7781
FSC Code: 5331
MPN: CR130A

5331-01-554-2651 (674-002700)

NIIN: 01-554-2651
In stock
NSN: 5331-01-554-2651
FSC Code: 5331
MPN: 674002700

5331-01-475-1174 (6735231-122)

NIIN: 01-475-1174
In stock
NSN: 5331-01-475-1174
FSC Code: 5331
MPN: 6735231122

5331-01-560-0855 (671B2555)

NIIN: 01-560-0855
In stock
NSN: 5331-01-560-0855
FSC Code: 5331
MPN: 671B2555

5331-01-343-8242 (671B2540)

NIIN: 01-343-8242
In stock
NSN: 5331-01-343-8242
FSC Code: 5331
MPN: 671B2540

5331-01-560-0820 (671B2540)

NIIN: 01-560-0820
In stock
NSN: 5331-01-560-0820
FSC Code: 5331
MPN: 671B2540

5331-01-390-5837 (671-10156)

NIIN: 01-390-5837
In stock
NSN: 5331-01-390-5837
FSC Code: 5331
MPN: 67110156

5331-01-424-1944 (671-00268-0)

NIIN: 01-424-1944
In stock
NSN: 5331-01-424-1944
FSC Code: 5331
MPN: 671002680

5331-01-367-1167 (671-00233-0)

NIIN: 01-367-1167
In stock
NSN: 5331-01-367-1167
FSC Code: 5331
MPN: 671002330

5331-01-497-1803 (671-00239)

NIIN: 01-497-1803
In stock
NSN: 5331-01-497-1803
FSC Code: 5331
MPN: 67100239

5331-01-420-6087 (671-00027-0)

NIIN: 01-420-6087
In stock
NSN: 5331-01-420-6087
FSC Code: 5331
MPN: 671000270

5331-01-389-4330 (671-00152)

NIIN: 01-389-4330
In stock
NSN: 5331-01-389-4330
FSC Code: 5331
MPN: 67100152

5331-01-420-6089 (671-00914-0)

NIIN: 01-420-6089
In stock
NSN: 5331-01-420-6089
FSC Code: 5331
MPN: 671009140

5331-01-378-7011 (671-00235)

NIIN: 01-378-7011
In stock
NSN: 5331-01-378-7011
FSC Code: 5331
MPN: 67100235

5331-01-341-7483 (671-00015)

NIIN: 01-341-7483
In stock
NSN: 5331-01-341-7483
FSC Code: 5331
MPN: 67100015

5331-01-368-5635 (671-00035-0)

NIIN: 01-368-5635
In stock
NSN: 5331-01-368-5635
FSC Code: 5331
MPN: 671000350

5331-01-424-1941 (671-00158-0)

NIIN: 01-424-1941
In stock
NSN: 5331-01-424-1941
FSC Code: 5331
MPN: 671001580

5331-01-457-5676 (671-00138)

NIIN: 01-457-5676
In stock
NSN: 5331-01-457-5676
FSC Code: 5331
MPN: 67100138

5331-01-424-1947 (671-00118-0)

NIIN: 01-424-1947
In stock
NSN: 5331-01-424-1947
FSC Code: 5331
MPN: 671001180

5331-01-341-7484 (671-00022)

NIIN: 01-341-7484
In stock
NSN: 5331-01-341-7484
FSC Code: 5331
MPN: 67100022

5331-01-387-9124 (671-00037)

NIIN: 01-387-9124
In stock
NSN: 5331-01-387-9124
FSC Code: 5331
MPN: 67100037

5331-01-358-0973 (670B1509)

NIIN: 01-358-0973
In stock
NSN: 5331-01-358-0973
FSC Code: 5331
MPN: 670B1509

5331-01-560-0293 (670B2018)

NIIN: 01-560-0293
In stock
NSN: 5331-01-560-0293
FSC Code: 5331
MPN: 670B2018

5331-01-359-1504 (670B2011)

NIIN: 01-359-1504
In stock
NSN: 5331-01-359-1504
FSC Code: 5331
MPN: 670B2011

5331-01-343-8764 (670B2015)

NIIN: 01-343-8764
In stock
NSN: 5331-01-343-8764
FSC Code: 5331
MPN: 670B2015

5331-01-343-8241 (670B2018)

NIIN: 01-343-8241
In stock
NSN: 5331-01-343-8241
FSC Code: 5331
MPN: 670B2018

5331-01-560-1100 (670B1506)

NIIN: 01-560-1100
In stock
NSN: 5331-01-560-1100
FSC Code: 5331
MPN: 670B1506

5331-01-560-0204 (670D3048)

NIIN: 01-560-0204
In stock
NSN: 5331-01-560-0204
FSC Code: 5331
MPN: 670D3048

5331-01-359-1506 (670B1506)

NIIN: 01-359-1506
In stock
NSN: 5331-01-359-1506
FSC Code: 5331
MPN: 670B1506

5331-01-350-2976 (670B2020)

NIIN: 01-350-2976
In stock
NSN: 5331-01-350-2976
FSC Code: 5331
MPN: 670B2020

5331-01-363-1788 (670875C1)

NIIN: 01-363-1788
In stock
NSN: 5331-01-363-1788
FSC Code: 5331
MPN: 670875C1

5331-00-915-2199 (CPXK41330)

NIIN: 00-915-2199
In stock
NSN: 5331-00-915-2199
FSC Code: 5331
MPN: CPXK41330

5331-22-269-1815 (6-705C-AB)

NIIN: 22-269-1815
In stock
NSN: 5331-22-269-1815
FSC Code: 5331
MPN: 6705CAB

5331-00-973-2396 (CPB22)

NIIN: 00-973-2396
In stock
NSN: 5331-00-973-2396
FSC Code: 5331
MPN: CPB22

5331-01-309-3630 (CP-751-531-377)

NIIN: 01-309-3630
In stock
NSN: 5331-01-309-3630
FSC Code: 5331
MPN: CP751531377

5331-01-333-5188 (CP13-5RP)

NIIN: 01-333-5188
In stock
NSN: 5331-01-333-5188
FSC Code: 5331
MPN: CP135RP

5331-01-333-5189 (CP15-4)

NIIN: 01-333-5189
In stock
NSN: 5331-01-333-5189
FSC Code: 5331
MPN: CP154

5331-01-549-2007 (6-6R1)

NIIN: 01-549-2007
In stock
NSN: 5331-01-549-2007
FSC Code: 5331
MPN: 66R1

5331-01-483-0404 (6696518-3)

NIIN: 01-483-0404
In stock
NSN: 5331-01-483-0404
FSC Code: 5331
MPN: 66965183

5331-01-317-9491 (CP031C0354C4)

NIIN: 01-317-9491
In stock
NSN: 5331-01-317-9491
FSC Code: 5331
MPN: CP031C0354C4

5331-01-317-9489 (CP031C036C4)

NIIN: 01-317-9489
In stock
NSN: 5331-01-317-9489
FSC Code: 5331
MPN: CP031C036C4

5331-01-317-9493 (CP031C044C4)

NIIN: 01-317-9493
In stock
NSN: 5331-01-317-9493
FSC Code: 5331
MPN: CP031C044C4

5331-01-317-9495 (CP031C265C4)

NIIN: 01-317-9495
In stock
NSN: 5331-01-317-9495
FSC Code: 5331
MPN: CP031C265C4

5331-01-317-9488 (CP031C042C4)

NIIN: 01-317-9488
In stock
NSN: 5331-01-317-9488
FSC Code: 5331
MPN: CP031C042C4

5331-01-317-9494 (CP031C215C4)

NIIN: 01-317-9494
In stock
NSN: 5331-01-317-9494
FSC Code: 5331
MPN: CP031C215C4

5331-01-317-9490 (CP031C029C4)

NIIN: 01-317-9490
In stock
NSN: 5331-01-317-9490
FSC Code: 5331
MPN: CP031C029C4

5331-01-285-5338 (CP031B03DC2)

NIIN: 01-285-5338
In stock
NSN: 5331-01-285-5338
FSC Code: 5331
MPN: CP031B03DC2