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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.

5331-00-880-7724 (508885-4)

NIIN: 00-880-7724
In stock
NSN: 5331-00-880-7724
FSC Code: 5331
MPN: 5088854

5331-00-804-3950 (508885-8)

NIIN: 00-804-3950
In stock
NSN: 5331-00-804-3950
FSC Code: 5331
MPN: 5088858

5331-00-804-3949 (508885-7)

NIIN: 00-804-3949
In stock
NSN: 5331-00-804-3949
FSC Code: 5331
MPN: 5088857

5331-00-804-3951 (508885-9)

NIIN: 00-804-3951
In stock
NSN: 5331-00-804-3951
FSC Code: 5331
MPN: 5088859

5331-00-880-7723 (508885-3)

NIIN: 00-880-7723
In stock
NSN: 5331-00-880-7723
FSC Code: 5331
MPN: 5088853

5331-00-063-3628 (508885-5)

NIIN: 00-063-3628
In stock
NSN: 5331-00-063-3628
FSC Code: 5331
MPN: 5088855

5331-01-142-4435 (50-88007-02)

NIIN: 01-142-4435
In stock
NSN: 5331-01-142-4435
FSC Code: 5331
MPN: 508800702

5331-00-054-9393 (5-087C147-7)

NIIN: 00-054-9393
In stock
NSN: 5331-00-054-9393
FSC Code: 5331
MPN: 5087C1477

5331-00-689-9829 (5-086N304-75)

NIIN: 00-689-9829
In stock
NSN: 5331-00-689-9829
FSC Code: 5331
MPN: 5086N30475

5331-01-134-1925 (50862-1)

NIIN: 01-134-1925
In stock
NSN: 5331-01-134-1925
FSC Code: 5331
MPN: 508621

5331-00-126-5204 (5083E)

NIIN: 00-126-5204
In stock
NSN: 5331-00-126-5204
FSC Code: 5331
MPN: 5083E

5331-01-438-9358 (1819234C1)

NIIN: 01-438-9358
In stock
NSN: 5331-01-438-9358
FSC Code: 5331
MPN: 1819234C1

5331-00-126-5315 (5083J)

NIIN: 00-126-5315
In stock
NSN: 5331-00-126-5315
FSC Code: 5331
MPN: 5083J

5331-01-437-1285 (1819099C1)

NIIN: 01-437-1285
In stock
NSN: 5331-01-437-1285
FSC Code: 5331
MPN: 1819099C1

5331-01-556-4938 (1819099C1)

NIIN: 01-556-4938
In stock
NSN: 5331-01-556-4938
FSC Code: 5331
MPN: 1819099C1

5331-01-535-8302 (1818518C1)

NIIN: 01-535-8302
In stock
NSN: 5331-01-535-8302
FSC Code: 5331
MPN: 1818518C1

5331-01-556-4929 (1818518C1)

NIIN: 01-556-4929
In stock
NSN: 5331-01-556-4929
FSC Code: 5331
MPN: 1818518C1

5331-01-535-8256 (1818400C1)

NIIN: 01-535-8256
In stock
NSN: 5331-01-535-8256
FSC Code: 5331
MPN: 1818400C1

5331-01-547-4884 (1818402C2)

NIIN: 01-547-4884
In stock
NSN: 5331-01-547-4884
FSC Code: 5331
MPN: 1818402C2

5331-01-556-4927 (1818402C2)

NIIN: 01-556-4927
In stock
NSN: 5331-01-556-4927
FSC Code: 5331
MPN: 1818402C2

5331-01-556-4926 (1818400C1)

NIIN: 01-556-4926
In stock
NSN: 5331-01-556-4926
FSC Code: 5331
MPN: 1818400C1

5331-01-299-3279 (5081658-001)

NIIN: 01-299-3279
In stock
NSN: 5331-01-299-3279
FSC Code: 5331
MPN: 5081658001

5331-01-289-7748 (5080-70)

NIIN: 01-289-7748
In stock
NSN: 5331-01-289-7748
FSC Code: 5331
MPN: 508070

5331-01-535-7681 (1815874C1)

NIIN: 01-535-7681
In stock
NSN: 5331-01-535-7681
FSC Code: 5331
MPN: 1815874C1

5331-01-556-4885 (1815980C1)

NIIN: 01-556-4885
In stock
NSN: 5331-01-556-4885
FSC Code: 5331
MPN: 1815980C1

5331-01-556-4882 (1815874C1)

NIIN: 01-556-4882
In stock
NSN: 5331-01-556-4882
FSC Code: 5331
MPN: 1815874C1

5331-01-525-5306 (18148-ZY3-003)

NIIN: 01-525-5306
In stock
NSN: 5331-01-525-5306
FSC Code: 5331
MPN: 18148ZY3003

5331-01-556-4878 (1814695C1)

NIIN: 01-556-4878
In stock
NSN: 5331-01-556-4878
FSC Code: 5331
MPN: 1814695C1

5331-01-547-4911 (1814695C1)

NIIN: 01-547-4911
In stock
NSN: 5331-01-547-4911
FSC Code: 5331
MPN: 1814695C1

5331-01-378-7444 (18141FS)

NIIN: 01-378-7444
In stock
NSN: 5331-01-378-7444
FSC Code: 5331
MPN: 18141FS

5331-01-253-1623 (50-780-024-30)

NIIN: 01-253-1623
In stock
NSN: 5331-01-253-1623
FSC Code: 5331
MPN: 5078002430

5331-01-556-4875 (1813823C1)

NIIN: 01-556-4875
In stock
NSN: 5331-01-556-4875
FSC Code: 5331
MPN: 1813823C1

5331-01-535-7330 (1813824C1)

NIIN: 01-535-7330
In stock
NSN: 5331-01-535-7330
FSC Code: 5331
MPN: 1813824C1

5331-01-118-4239 (507563-0-01)

NIIN: 01-118-4239
In stock
NSN: 5331-01-118-4239
FSC Code: 5331
MPN: 507563001

5331-00-464-7336 (507565-0-80)

NIIN: 00-464-7336
In stock
NSN: 5331-00-464-7336
FSC Code: 5331
MPN: 507565080

5331-00-811-1499 (507563-1)

NIIN: 00-811-1499
In stock
NSN: 5331-00-811-1499
FSC Code: 5331
MPN: 5075631

5331-01-078-4326 (507558-1)

NIIN: 01-078-4326
In stock
NSN: 5331-01-078-4326
FSC Code: 5331
MPN: 5075581

5331-01-163-4625 (5-074N602-70)

NIIN: 01-163-4625
In stock
NSN: 5331-01-163-4625
FSC Code: 5331
MPN: 5074N60270

5331-01-535-6982 (1812691C1)

NIIN: 01-535-6982
In stock
NSN: 5331-01-535-6982
FSC Code: 5331
MPN: 1812691C1

5331-01-556-4869 (1812691C1)

NIIN: 01-556-4869
In stock
NSN: 5331-01-556-4869
FSC Code: 5331
MPN: 1812691C1

5331-00-171-7500 (5072D7)

NIIN: 00-171-7500
In stock
NSN: 5331-00-171-7500
FSC Code: 5331
MPN: 5072D7

5331-01-556-4651 (1811052C1)

NIIN: 01-556-4651
In stock
NSN: 5331-01-556-4651
FSC Code: 5331
MPN: 1811052C1

5331-01-556-4653 (1811053C1)

NIIN: 01-556-4653
In stock
NSN: 5331-01-556-4653
FSC Code: 5331
MPN: 1811053C1

5331-01-424-3865 (18108VT)

NIIN: 01-424-3865
In stock
NSN: 5331-01-424-3865
FSC Code: 5331
MPN: 18108VT

5331-01-151-6104 (5-071N602-70)

NIIN: 01-151-6104
In stock
NSN: 5331-01-151-6104
FSC Code: 5331
MPN: 5071N60270

5331-01-424-3862 (18106TS)

NIIN: 01-424-3862
In stock
NSN: 5331-01-424-3862
FSC Code: 5331
MPN: 18106TS

5331-01-286-2493 (506-928-020-471-003)

NIIN: 01-286-2493
In stock
NSN: 5331-01-286-2493
FSC Code: 5331
MPN: 506928020471003

5331-01-250-3170 (506-928-060-360-003)

NIIN: 01-250-3170
In stock
NSN: 5331-01-250-3170
FSC Code: 5331
MPN: 506928060360003