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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.

5331-01-126-9086 (4119-20)

NIIN: 01-126-9086
In stock
NSN: 5331-01-126-9086
FSC Code: 5331
MPN: 411920

5331-01-572-2480 (140406-908)

NIIN: 01-572-2480
In stock
NSN: 5331-01-572-2480
FSC Code: 5331
MPN: 140406908

5331-01-475-7816 (140406-905)

NIIN: 01-475-7816
In stock
NSN: 5331-01-475-7816
FSC Code: 5331
MPN: 140406905

5331-01-475-7817 (140406-924)

NIIN: 01-475-7817
In stock
NSN: 5331-01-475-7817
FSC Code: 5331
MPN: 140406924

5331-01-475-7824 (140406-912)

NIIN: 01-475-7824
In stock
NSN: 5331-01-475-7824
FSC Code: 5331
MPN: 140406912

5331-01-475-7821 (140406-903)

NIIN: 01-475-7821
In stock
NSN: 5331-01-475-7821
FSC Code: 5331
MPN: 140406903

5331-01-475-7820 (140406-904)

NIIN: 01-475-7820
In stock
NSN: 5331-01-475-7820
FSC Code: 5331
MPN: 140406904

5331-01-572-2500 (140406-916)

NIIN: 01-572-2500
In stock
NSN: 5331-01-572-2500
FSC Code: 5331
MPN: 140406916

5331-01-484-0125 (M83248/2-255)

NIIN: 01-484-0125
In stock
NSN: 5331-01-484-0125
FSC Code: 5331
MPN: M832482255

5331-01-064-3857 (41-1742)

NIIN: 01-064-3857
In stock
NSN: 5331-01-064-3857
FSC Code: 5331
MPN: 411742

5331-01-138-5270 (411628-09-B)

NIIN: 01-138-5270
In stock
NSN: 5331-01-138-5270
FSC Code: 5331
MPN: 41162809B

5331-01-136-7126 (411628-05-A)

NIIN: 01-136-7126
In stock
NSN: 5331-01-136-7126
FSC Code: 5331
MPN: 41162805A

5331-01-161-2403 (411628-08-B)

NIIN: 01-161-2403
In stock
NSN: 5331-01-161-2403
FSC Code: 5331
MPN: 41162808B

5331-01-476-7562 (140-2.5IN)

NIIN: 01-476-7562
In stock
NSN: 5331-01-476-7562
FSC Code: 5331
MPN: 14025IN

5331-01-540-8159 (140-2.00IN)

NIIN: 01-540-8159
In stock
NSN: 5331-01-540-8159
FSC Code: 5331
MPN: 140200IN

5331-00-956-9122 (41152PC54)

NIIN: 00-956-9122
In stock
NSN: 5331-00-956-9122
FSC Code: 5331
MPN: 41152PC54

5331-01-088-6102 (4114-59)

NIIN: 01-088-6102
In stock
NSN: 5331-01-088-6102
FSC Code: 5331
MPN: 411459

5331-01-088-6866 (4114-19-Q)

NIIN: 01-088-6866
In stock
NSN: 5331-01-088-6866
FSC Code: 5331
MPN: 411419Q

5331-01-260-0322 (4113-99)

NIIN: 01-260-0322
In stock
NSN: 5331-01-260-0322
FSC Code: 5331
MPN: 411399

5331-00-684-5447 (4113-20)

NIIN: 00-684-5447
In stock
NSN: 5331-00-684-5447
FSC Code: 5331
MPN: 411320

5331-01-077-8507 (4113-32)

NIIN: 01-077-8507
In stock
NSN: 5331-01-077-8507
FSC Code: 5331
MPN: 411332

5331-01-545-0622 (140-1.50IN)

NIIN: 01-545-0622
In stock
NSN: 5331-01-545-0622
FSC Code: 5331
MPN: 140150IN

5331-01-545-0625 (140-1.50IN)

NIIN: 01-545-0625
In stock
NSN: 5331-01-545-0625
FSC Code: 5331
MPN: 140150IN

5331-01-222-7966 (41-12567)

NIIN: 01-222-7966
In stock
NSN: 5331-01-222-7966
FSC Code: 5331
MPN: 4112567

5331-01-283-7473 (4112-49)

NIIN: 01-283-7473
In stock
NSN: 5331-01-283-7473
FSC Code: 5331
MPN: 411249

5331-01-310-5194 (4112-32)

NIIN: 01-310-5194
In stock
NSN: 5331-01-310-5194
FSC Code: 5331
MPN: 411232

5331-01-247-1628 (4111BUNA477B)

NIIN: 01-247-1628
In stock
NSN: 5331-01-247-1628
FSC Code: 5331
MPN: 4111BUNA477B

5331-01-312-0619 (41-118)

NIIN: 01-312-0619
In stock
NSN: 5331-01-312-0619
FSC Code: 5331
MPN: 41118

5331-01-207-1479 (4111-62)

NIIN: 01-207-1479
In stock
NSN: 5331-01-207-1479
FSC Code: 5331
MPN: 411162

5331-01-089-7908 (4111-49)

NIIN: 01-089-7908
In stock
NSN: 5331-01-089-7908
FSC Code: 5331
MPN: 411149

5331-01-197-7525 (411115A)

NIIN: 01-197-7525
In stock
NSN: 5331-01-197-7525
FSC Code: 5331
MPN: 411115A

5331-01-157-1887 (411111-001)

NIIN: 01-157-1887
In stock
NSN: 5331-01-157-1887
FSC Code: 5331
MPN: 411111001

5331-01-292-0156 (4110778-1)

NIIN: 01-292-0156
In stock
NSN: 5331-01-292-0156
FSC Code: 5331
MPN: 41107781

5331-01-467-3310 (1560-0.50IN)

NIIN: 01-467-3310
In stock
NSN: 5331-01-467-3310
FSC Code: 5331
MPN: 1560050IN

5331-01-563-8965 (14.530X.139N70)

NIIN: 01-563-8965
In stock
NSN: 5331-01-563-8965
FSC Code: 5331
MPN: 14530X139N70

5331-00-942-1822 (410693-1)

NIIN: 00-942-1822
In stock
NSN: 5331-00-942-1822
FSC Code: 5331
MPN: 4106931

5331-99-809-7836 (44111-017-8)

NIIN: 99-809-7836
In stock
NSN: 5331-99-809-7836
FSC Code: 5331
MPN: 441110178

5331-01-340-8185 (13F-LCB4-6-8)

NIIN: 01-340-8185
In stock
NSN: 5331-01-340-8185
FSC Code: 5331
MPN: 13FLCB468

5331-01-340-8186 (13F-LCB4-6-15)

NIIN: 01-340-8186
In stock
NSN: 5331-01-340-8186
FSC Code: 5331
MPN: 13FLCB4615

5331-01-420-2097 (13A4-MM1(B/T)

NIIN: 01-420-2097
In stock
NSN: 5331-01-420-2097
FSC Code: 5331
MPN: 13A4MM1BT

5331-00-618-1664 (410-12310)

NIIN: 00-618-1664
In stock
NSN: 5331-00-618-1664
FSC Code: 5331
MPN: 41012310

5331-01-359-3551 (139A-6)

NIIN: 01-359-3551
In stock
NSN: 5331-01-359-3551
FSC Code: 5331
MPN: 139A6

5331-01-512-7897 (13977PC15)

NIIN: 01-512-7897
In stock
NSN: 5331-01-512-7897
FSC Code: 5331
MPN: 13977PC15

5331-01-512-7880 (13972PC86)

NIIN: 01-512-7880
In stock
NSN: 5331-01-512-7880
FSC Code: 5331
MPN: 13972PC86

5331-01-512-7826 (13974PC21)

NIIN: 01-512-7826
In stock
NSN: 5331-01-512-7826
FSC Code: 5331
MPN: 13974PC21

5331-01-512-7866 (13972PC70)

NIIN: 01-512-7866
In stock
NSN: 5331-01-512-7866
FSC Code: 5331
MPN: 13972PC70

5331-01-512-7899 (13974PC36)

NIIN: 01-512-7899
In stock
NSN: 5331-01-512-7899
FSC Code: 5331
MPN: 13974PC36

5331-01-512-7850 (13972PC75)

NIIN: 01-512-7850
In stock
NSN: 5331-01-512-7850
FSC Code: 5331
MPN: 13972PC75