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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.

5331-01-320-9553 (E853110S)

NIIN: 01-320-9553
In stock
NSN: 5331-01-320-9553
FSC Code: 5331
MPN: E853110S

5331-01-226-9334 (E-8256)

NIIN: 01-226-9334
In stock
NSN: 5331-01-226-9334
FSC Code: 5331
MPN: E8256

5331-20-001-6510 (A1-70-6422-12-02)

NIIN: 20-001-6510
In stock
NSN: 5331-20-001-6510
FSC Code: 5331
MPN: A17064221202

5331-01-226-9335 (E-8256)

NIIN: 01-226-9335
In stock
NSN: 5331-01-226-9335
FSC Code: 5331
MPN: E8256

5331-20-001-6509 (A1-70-6422-12-02)

NIIN: 20-001-6509
In stock
NSN: 5331-20-001-6509
FSC Code: 5331
MPN: A17064221202

5331-21-921-7692 (A1-70-6422-12-02)

NIIN: 21-921-7692
In stock
NSN: 5331-21-921-7692
FSC Code: 5331
MPN: A17064221202

5331-01-543-5537 (70R5051)

NIIN: 01-543-5537
In stock
NSN: 5331-01-543-5537
FSC Code: 5331
MPN: 70R5051

5331-01-543-5541 (70R5058)

NIIN: 01-543-5541
In stock
NSN: 5331-01-543-5541
FSC Code: 5331
MPN: 70R5058

5331-01-542-6426 (70R5056)

NIIN: 01-542-6426
In stock
NSN: 5331-01-542-6426
FSC Code: 5331
MPN: 70R5056

5331-01-298-3051 (E-704-SR)

NIIN: 01-298-3051
In stock
NSN: 5331-01-298-3051
FSC Code: 5331
MPN: E704SR

5331-01-325-1991 (E692-75-73.550IDX210)

NIIN: 01-325-1991
In stock
NSN: 5331-01-325-1991
FSC Code: 5331
MPN: E6927573550IDX210

5331-01-494-2941 (70BN)

NIIN: 01-494-2941
In stock
NSN: 5331-01-494-2941
FSC Code: 5331
MPN: 70BN

5331-01-276-8448 (E6-0543-2)

NIIN: 01-276-8448
In stock
NSN: 5331-01-276-8448
FSC Code: 5331
MPN: E605432

5331-01-301-2080 (E52687)

NIIN: 01-301-2080
In stock
NSN: 5331-01-301-2080
FSC Code: 5331
MPN: E52687

5331-01-278-1752 (E-52013)

NIIN: 01-278-1752
In stock
NSN: 5331-01-278-1752
FSC Code: 5331
MPN: E52013

5331-01-275-8610 (E-4505)

NIIN: 01-275-8610
In stock
NSN: 5331-01-275-8610
FSC Code: 5331
MPN: E4505

5331-01-559-4838 (7093-CITEM8)

NIIN: 01-559-4838
In stock
NSN: 5331-01-559-4838
FSC Code: 5331
MPN: 7093CITEM8

5331-01-294-6809 (E44070-E5002-M805)

NIIN: 01-294-6809
In stock
NSN: 5331-01-294-6809
FSC Code: 5331
MPN: E44070E5002M805

5331-01-294-5277 (E44070-E55002-M805)

NIIN: 01-294-5277
In stock
NSN: 5331-01-294-5277
FSC Code: 5331
MPN: E44070E55002M805

5331-01-204-0114 (E43-78-077)

NIIN: 01-204-0114
In stock
NSN: 5331-01-204-0114
FSC Code: 5331
MPN: E4378077

5331-01-267-8512 (E423-78-084)

NIIN: 01-267-8512
In stock
NSN: 5331-01-267-8512
FSC Code: 5331
MPN: E42378084

5331-01-193-9395 (E42005B-PC)

NIIN: 01-193-9395
In stock
NSN: 5331-01-193-9395
FSC Code: 5331
MPN: E42005BPC

5331-01-269-4631 (E42001)

NIIN: 01-269-4631
In stock
NSN: 5331-01-269-4631
FSC Code: 5331
MPN: E42001

5331-01-268-9014 (E42001)

NIIN: 01-268-9014
In stock
NSN: 5331-01-268-9014
FSC Code: 5331
MPN: E42001

5331-01-260-8814 (E-3954)

NIIN: 01-260-8814
In stock
NSN: 5331-01-260-8814
FSC Code: 5331
MPN: E3954

5331-01-264-1151 (E3954)

NIIN: 01-264-1151
In stock
NSN: 5331-01-264-1151
FSC Code: 5331
MPN: E3954

5331-00-186-7766 (E337)

NIIN: 00-186-7766
In stock
NSN: 5331-00-186-7766
FSC Code: 5331
MPN: E337

5331-01-566-9016 (708-8K-15160)

NIIN: 01-566-9016
In stock
NSN: 5331-01-566-9016
FSC Code: 5331
MPN: 7088K15160

5331-00-999-8362 (E3010-9)

NIIN: 00-999-8362
In stock
NSN: 5331-00-999-8362
FSC Code: 5331
MPN: E30109

5331-00-004-3297 (E300-383-13-26)

NIIN: 00-004-3297
In stock
NSN: 5331-00-004-3297
FSC Code: 5331
MPN: E3003831326

5331-01-329-6912 (E2ZZ60798)

NIIN: 01-329-6912
In stock
NSN: 5331-01-329-6912
FSC Code: 5331
MPN: E2ZZ60798

5331-01-196-2458 (E28)

NIIN: 01-196-2458
In stock
NSN: 5331-01-196-2458
FSC Code: 5331
MPN: E28

5331-01-194-6112 (E-260-54)

NIIN: 01-194-6112
In stock
NSN: 5331-01-194-6112
FSC Code: 5331
MPN: E26054

5331-01-208-2918 (E-26141N3)

NIIN: 01-208-2918
In stock
NSN: 5331-01-208-2918
FSC Code: 5331
MPN: E26141N3

5331-01-309-6943 (E2500-24)

NIIN: 01-309-6943
In stock
NSN: 5331-01-309-6943
FSC Code: 5331
MPN: E250024

5331-01-350-5341 (707011A)

NIIN: 01-350-5341
In stock
NSN: 5331-01-350-5341
FSC Code: 5331
MPN: 707011A

5331-01-214-1917 (E-134)

NIIN: 01-214-1917
In stock
NSN: 5331-01-214-1917
FSC Code: 5331
MPN: E134

5331-01-349-4133 (70-6230-22)

NIIN: 01-349-4133
In stock
NSN: 5331-01-349-4133
FSC Code: 5331
MPN: 70623022

5331-01-521-4579 (70-6102)

NIIN: 01-521-4579
In stock
NSN: 5331-01-521-4579
FSC Code: 5331
MPN: 706102

5331-01-475-6909 (70-6058)

NIIN: 01-475-6909
In stock
NSN: 5331-01-475-6909
FSC Code: 5331
MPN: 706058

5331-01-476-4806 (70-6039)

NIIN: 01-476-4806
In stock
NSN: 5331-01-476-4806
FSC Code: 5331
MPN: 706039

5331-01-475-6910 (70-6029)

NIIN: 01-475-6910
In stock
NSN: 5331-01-475-6910
FSC Code: 5331
MPN: 706029

5331-01-475-6902 (70-6012)

NIIN: 01-475-6902
In stock
NSN: 5331-01-475-6902
FSC Code: 5331
MPN: 706012

5331-01-475-6896 (70-6002)

NIIN: 01-475-6896
In stock
NSN: 5331-01-475-6896
FSC Code: 5331
MPN: 706002

5331-00-055-2577 (E080SA42026PC104)

NIIN: 00-055-2577
In stock
NSN: 5331-00-055-2577
FSC Code: 5331
MPN: E080SA42026PC104

5331-01-017-5790 (E037407)

NIIN: 01-017-5790
In stock
NSN: 5331-01-017-5790
FSC Code: 5331
MPN: E037407

5331-01-017-5789 (E037400)

NIIN: 01-017-5789
In stock
NSN: 5331-01-017-5789
FSC Code: 5331
MPN: E037400

5331-01-452-3705 (705524-114)

NIIN: 01-452-3705
In stock
NSN: 5331-01-452-3705
FSC Code: 5331
MPN: 705524114