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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.

5331-01-317-9492 (CP031C026C4)

NIIN: 01-317-9492
In stock
NSN: 5331-01-317-9492
FSC Code: 5331
MPN: CP031C026C4

5331-01-285-4807 (CP031B016C2)

NIIN: 01-285-4807
In stock
NSN: 5331-01-285-4807
FSC Code: 5331
MPN: CP031B016C2

5331-01-285-5908 (CP031A912C2)

NIIN: 01-285-5908
In stock
NSN: 5331-01-285-5908
FSC Code: 5331
MPN: CP031A912C2

5331-01-396-8064 (66910181-1)

NIIN: 01-396-8064
In stock
NSN: 5331-01-396-8064
FSC Code: 5331
MPN: 669101811

5331-01-285-5909 (CP031A906C2)

NIIN: 01-285-5909
In stock
NSN: 5331-01-285-5909
FSC Code: 5331
MPN: CP031A906C2

5331-01-285-5339 (CP031A012C2)

NIIN: 01-285-5339
In stock
NSN: 5331-01-285-5339
FSC Code: 5331
MPN: CP031A012C2

5331-01-285-4804 (CP031A144C2)

NIIN: 01-285-4804
In stock
NSN: 5331-01-285-4804
FSC Code: 5331
MPN: CP031A144C2

5331-01-302-9336 (CON677-4400-93)

NIIN: 01-302-9336
In stock
NSN: 5331-01-302-9336
FSC Code: 5331
MPN: CON677440093

5331-01-168-3872 (CND1353U)

NIIN: 01-168-3872
In stock
NSN: 5331-01-168-3872
FSC Code: 5331
MPN: CND1353U

5331-00-585-5956 (CND1353W)

NIIN: 00-585-5956
In stock
NSN: 5331-00-585-5956
FSC Code: 5331
MPN: CND1353W

5331-01-302-9344 (CN1-Q4226-366Y)

NIIN: 01-302-9344
In stock
NSN: 5331-01-302-9344
FSC Code: 5331
MPN: CN1Q4226366Y

5331-01-307-6756 (CN1-Q4207-B66Y)

NIIN: 01-307-6756
In stock
NSN: 5331-01-307-6756
FSC Code: 5331
MPN: CN1Q4207B66Y

5331-01-278-8389 (CN1-Q4237-V14A)

NIIN: 01-278-8389
In stock
NSN: 5331-01-278-8389
FSC Code: 5331
MPN: CN1Q4237V14A

5331-01-302-9346 (CN1-Q4129-366Y)

NIIN: 01-302-9346
In stock
NSN: 5331-01-302-9346
FSC Code: 5331
MPN: CN1Q4129366Y

5331-01-376-6827 (6672-652-000)

NIIN: 01-376-6827
In stock
NSN: 5331-01-376-6827
FSC Code: 5331
MPN: 6672652000

5331-01-376-6654 (6671-652-000)

NIIN: 01-376-6654
In stock
NSN: 5331-01-376-6654
FSC Code: 5331
MPN: 6671652000

5331-01-324-8833 (CM-ST-1149)

NIIN: 01-324-8833
In stock
NSN: 5331-01-324-8833
FSC Code: 5331
MPN: CMST1149

5331-22-269-1818 (6-866AC-B)

NIIN: 22-269-1818
In stock
NSN: 5331-22-269-1818
FSC Code: 5331
MPN: 6866ACB

5331-01-422-4445 (66610X-X-C)

NIIN: 01-422-4445
In stock
NSN: 5331-01-422-4445
FSC Code: 5331
MPN: 66610XXC

5331-01-553-2369 (665-72)

NIIN: 01-553-2369
In stock
NSN: 5331-01-553-2369
FSC Code: 5331
MPN: 66572

5331-01-349-8915 (663700-118)

NIIN: 01-349-8915
In stock
NSN: 5331-01-349-8915
FSC Code: 5331
MPN: 663700118

5331-01-126-1554 (CM1491R4S80)

NIIN: 01-126-1554
In stock
NSN: 5331-01-126-1554
FSC Code: 5331
MPN: CM1491R4S80

5331-00-038-2451 (CM1399)

NIIN: 00-038-2451
In stock
NSN: 5331-00-038-2451
FSC Code: 5331
MPN: CM1399

5331-01-236-6131 (CM1-240-B46A)

NIIN: 01-236-6131
In stock
NSN: 5331-01-236-6131
FSC Code: 5331
MPN: CM1240B46A

5331-00-038-2464 (CM1363)

NIIN: 00-038-2464
In stock
NSN: 5331-00-038-2464
FSC Code: 5331
MPN: CM1363

5331-01-242-2694 (CM1-116-B46A)

NIIN: 01-242-2694
In stock
NSN: 5331-01-242-2694
FSC Code: 5331
MPN: CM1116B46A

5331-01-160-8880 (CM1-112-B46A)

NIIN: 01-160-8880
In stock
NSN: 5331-01-160-8880
FSC Code: 5331
MPN: CM1112B46A

5331-01-269-3691 (CM-1071)

NIIN: 01-269-3691
In stock
NSN: 5331-01-269-3691
FSC Code: 5331
MPN: CM1071

5331-22-269-1814 (6-705C-AB)

NIIN: 22-269-1814
In stock
NSN: 5331-22-269-1814
FSC Code: 5331
MPN: 6705CAB

5331-01-392-5029 (66179-006-020)

NIIN: 01-392-5029
In stock
NSN: 5331-01-392-5029
FSC Code: 5331
MPN: 66179006020

5331-01-473-3801 (66155-J-922)

NIIN: 01-473-3801
In stock
NSN: 5331-01-473-3801
FSC Code: 5331
MPN: 66155J922

5331-01-506-5179 (6671-661-000)

NIIN: 01-506-5179
In stock
NSN: 5331-01-506-5179
FSC Code: 5331
MPN: 6671661000

5331-01-392-5019 (66117-012-020)

NIIN: 01-392-5019
In stock
NSN: 5331-01-392-5019
FSC Code: 5331
MPN: 66117012020

5331-01-392-5729 (66117-20-20)

NIIN: 01-392-5729
In stock
NSN: 5331-01-392-5729
FSC Code: 5331
MPN: 661172020

5331-01-392-6709 (66117-008-020)

NIIN: 01-392-6709
In stock
NSN: 5331-01-392-6709
FSC Code: 5331
MPN: 66117008020

5331-01-392-4128 (66117-013-015)

NIIN: 01-392-4128
In stock
NSN: 5331-01-392-4128
FSC Code: 5331
MPN: 66117013015

5331-01-326-7447 (CJ63-0037-8-2)

NIIN: 01-326-7447
In stock
NSN: 5331-01-326-7447
FSC Code: 5331
MPN: CJ63003782

5331-00-432-4351 (CIAZ7A294A)

NIIN: 00-432-4351
In stock
NSN: 5331-00-432-4351
FSC Code: 5331
MPN: CIAZ7A294A

5331-01-126-3480 (CI-0111)

NIIN: 01-126-3480
In stock
NSN: 5331-01-126-3480
FSC Code: 5331
MPN: CI0111

5331-00-147-6308 (CI-0024)

NIIN: 00-147-6308
In stock
NSN: 5331-00-147-6308
FSC Code: 5331
MPN: CI0024

5331-00-057-3989 (CI-0012)

NIIN: 00-057-3989
In stock
NSN: 5331-00-057-3989
FSC Code: 5331
MPN: CI0012

5331-01-421-9955 (66.27X3.53)

NIIN: 01-421-9955
In stock
NSN: 5331-01-421-9955
FSC Code: 5331
MPN: 6627X353

5331-01-277-2201 (CH792.041)

NIIN: 01-277-2201
In stock
NSN: 5331-01-277-2201
FSC Code: 5331
MPN: CH792041

5331-01-012-8846 (CH100-15-769)

NIIN: 01-012-8846
In stock
NSN: 5331-01-012-8846
FSC Code: 5331
MPN: CH10015769

5331-00-411-6877 (CH100-15-163)

NIIN: 00-411-6877
In stock
NSN: 5331-00-411-6877
FSC Code: 5331
MPN: CH10015163

5331-00-520-2826 (CH100-15-154)

NIIN: 00-520-2826
In stock
NSN: 5331-00-520-2826
FSC Code: 5331
MPN: CH10015154

5331-01-481-8821 (659972C2)

NIIN: 01-481-8821
In stock
NSN: 5331-01-481-8821
FSC Code: 5331
MPN: 659972C2

5331-01-481-8802 (659730C1)

NIIN: 01-481-8802
In stock
NSN: 5331-01-481-8802
FSC Code: 5331
MPN: 659730C1