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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.

5331-01-249-8626 (N190344B000)

NIIN: 01-249-8626
In stock
NSN: 5331-01-249-8626
FSC Code: 5331
MPN: N190344B000

5331-01-205-5628 (N190212B000)

NIIN: 01-205-5628
In stock
NSN: 5331-01-205-5628
FSC Code: 5331
MPN: N190212B000

5331-01-205-5635 (N190114B000)

NIIN: 01-205-5635
In stock
NSN: 5331-01-205-5635
FSC Code: 5331
MPN: N190114B000

5331-01-255-1060 (N190326B000)

NIIN: 01-255-1060
In stock
NSN: 5331-01-255-1060
FSC Code: 5331
MPN: N190326B000

5331-01-205-5630 (N190214B000)

NIIN: 01-205-5630
In stock
NSN: 5331-01-205-5630
FSC Code: 5331
MPN: N190214B000

5331-01-205-5633 (N190014B000)

NIIN: 01-205-5633
In stock
NSN: 5331-01-205-5633
FSC Code: 5331
MPN: N190014B000

5331-01-119-5072 (N190145B000)

NIIN: 01-119-5072
In stock
NSN: 5331-01-119-5072
FSC Code: 5331
MPN: N190145B000

5331-01-205-5634 (N190011B000)

NIIN: 01-205-5634
In stock
NSN: 5331-01-205-5634
FSC Code: 5331
MPN: N190011B000

5331-01-226-5945 (N190149B000)

NIIN: 01-226-5945
In stock
NSN: 5331-01-226-5945
FSC Code: 5331
MPN: N190149B000

5331-01-210-4810 (N190010B000)

NIIN: 01-210-4810
In stock
NSN: 5331-01-210-4810
FSC Code: 5331
MPN: N190010B000

5331-01-254-2400 (N18-6)

NIIN: 01-254-2400
In stock
NSN: 5331-01-254-2400
FSC Code: 5331
MPN: N186

5331-01-209-3665 (N190007B000)

NIIN: 01-209-3665
In stock
NSN: 5331-01-209-3665
FSC Code: 5331
MPN: N190007B000

5331-00-468-5215 (N177392-21)

NIIN: 00-468-5215
In stock
NSN: 5331-00-468-5215
FSC Code: 5331
MPN: N17739221

5331-00-101-8753 (N177392-7)

NIIN: 00-101-8753
In stock
NSN: 5331-00-101-8753
FSC Code: 5331
MPN: N1773927

5331-01-238-5868 (N170851)

NIIN: 01-238-5868
In stock
NSN: 5331-01-238-5868
FSC Code: 5331
MPN: N170851

5331-01-175-0458 (N-16713-0101P)

NIIN: 01-175-0458
In stock
NSN: 5331-01-175-0458
FSC Code: 5331
MPN: N167130101P

5331-01-175-0457 (N-16548-L1100)

NIIN: 01-175-0457
In stock
NSN: 5331-01-175-0457
FSC Code: 5331
MPN: N16548L1100

5331-01-175-0459 (N-16518-99003)

NIIN: 01-175-0459
In stock
NSN: 5331-01-175-0459
FSC Code: 5331
MPN: N1651899003

5331-00-202-3987 (N155-5330-11)

NIIN: 00-202-3987
In stock
NSN: 5331-00-202-3987
FSC Code: 5331
MPN: N155533011

5331-00-101-7898 (N158377-4)

NIIN: 00-101-7898
In stock
NSN: 5331-00-101-7898
FSC Code: 5331
MPN: N1583774

5331-01-284-0705 (N-1501)

NIIN: 01-284-0705
In stock
NSN: 5331-01-284-0705
FSC Code: 5331
MPN: N1501

5331-01-423-1624 (ZZ-R-765CL2BGR70/AS568-129)

NIIN: 01-423-1624
In stock
NSN: 5331-01-423-1624
FSC Code: 5331
MPN: ZZR765CL2BGR70AS568129

5331-01-455-8664 (ZZ-R-765CL2BGR70/AS568-019)

NIIN: 01-455-8664
In stock
NSN: 5331-01-455-8664
FSC Code: 5331
MPN: ZZR765CL2BGR70AS568019

5331-01-331-9978 (N13164)

NIIN: 01-331-9978
In stock
NSN: 5331-01-331-9978
FSC Code: 5331
MPN: N13164

5331-00-285-9880 (N12788PC22)

NIIN: 00-285-9880
In stock
NSN: 5331-00-285-9880
FSC Code: 5331
MPN: N12788PC22

5331-01-281-3812 (N12-101)

NIIN: 01-281-3812
In stock
NSN: 5331-01-281-3812
FSC Code: 5331
MPN: N12101

5331-01-304-7770 (N-11728-V)

NIIN: 01-304-7770
In stock
NSN: 5331-01-304-7770
FSC Code: 5331
MPN: N11728V

5331-01-336-3146 (N-11728-Y)

NIIN: 01-336-3146
In stock
NSN: 5331-01-336-3146
FSC Code: 5331
MPN: N11728Y

5331-01-312-4817 (N-11728-DW)

NIIN: 01-312-4817
In stock
NSN: 5331-01-312-4817
FSC Code: 5331
MPN: N11728DW

5331-01-185-0348 (N-11728-NC)

NIIN: 01-185-0348
In stock
NSN: 5331-01-185-0348
FSC Code: 5331
MPN: N11728NC

5331-01-309-2488 (N-11728-GX)

NIIN: 01-309-2488
In stock
NSN: 5331-01-309-2488
FSC Code: 5331
MPN: N11728GX

5331-01-336-8771 (N-11728-JC)

NIIN: 01-336-8771
In stock
NSN: 5331-01-336-8771
FSC Code: 5331
MPN: N11728JC

5331-01-288-4528 (N-11728-BY)

NIIN: 01-288-4528
In stock
NSN: 5331-01-288-4528
FSC Code: 5331
MPN: N11728BY

5331-01-176-7923 (N11728KF)

NIIN: 01-176-7923
In stock
NSN: 5331-01-176-7923
FSC Code: 5331
MPN: N11728KF

5331-01-179-4250 (N11728DX)

NIIN: 01-179-4250
In stock
NSN: 5331-01-179-4250
FSC Code: 5331
MPN: N11728DX

5331-01-176-7921 (N11728EW)

NIIN: 01-176-7921
In stock
NSN: 5331-01-176-7921
FSC Code: 5331
MPN: N11728EW

5331-01-306-8631 (N-11728-DF)

NIIN: 01-306-8631
In stock
NSN: 5331-01-306-8631
FSC Code: 5331
MPN: N11728DF

5331-01-007-8800 (N11728CG)

NIIN: 01-007-8800
In stock
NSN: 5331-01-007-8800
FSC Code: 5331
MPN: N11728CG

5331-00-179-6208 (N11728CT)

NIIN: 00-179-6208
In stock
NSN: 5331-00-179-6208
FSC Code: 5331
MPN: N11728CT

5331-00-179-6206 (N11728BJ)

NIIN: 00-179-6206
In stock
NSN: 5331-00-179-6206
FSC Code: 5331
MPN: N11728BJ

5331-01-307-4221 (N-11728-AM)

NIIN: 01-307-4221
In stock
NSN: 5331-01-307-4221
FSC Code: 5331
MPN: N11728AM

5331-01-176-7924 (N11728AA)

NIIN: 01-176-7924
In stock
NSN: 5331-01-176-7924
FSC Code: 5331
MPN: N11728AA

5331-01-259-3364 (N10546SCM-7)

NIIN: 01-259-3364
In stock
NSN: 5331-01-259-3364
FSC Code: 5331
MPN: N10546SCM7

5331-01-290-2619 (N07-20021)

NIIN: 01-290-2619
In stock
NSN: 5331-01-290-2619
FSC Code: 5331
MPN: N0720021

5331-01-285-6888 (N07-20038)

NIIN: 01-285-6888
In stock
NSN: 5331-01-285-6888
FSC Code: 5331
MPN: N0720038

5331-01-119-4143 (N06-26536)

NIIN: 01-119-4143
In stock
NSN: 5331-01-119-4143
FSC Code: 5331
MPN: N0626536

5331-01-255-1055 (N03705)

NIIN: 01-255-1055
In stock
NSN: 5331-01-255-1055
FSC Code: 5331
MPN: N03705

5331-01-282-9269 (N04064)

NIIN: 01-282-9269
In stock
NSN: 5331-01-282-9269
FSC Code: 5331
MPN: N04064