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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.

5331-00-508-9356 (ST1051-010)

NIIN: 00-508-9356
In stock
NSN: 5331-00-508-9356
FSC Code: 5331
MPN: ST1051010

5331-01-233-9978 (ST-1013-1)

NIIN: 01-233-9978
In stock
NSN: 5331-01-233-9978
FSC Code: 5331
MPN: ST10131

5331-00-425-9245 (ST1050-117)

NIIN: 00-425-9245
In stock
NSN: 5331-00-425-9245
FSC Code: 5331
MPN: ST1050117

5331-00-255-3411 (ST1000-124)

NIIN: 00-255-3411
In stock
NSN: 5331-00-255-3411
FSC Code: 5331
MPN: ST1000124

5331-00-369-5927 (ST1001-08)

NIIN: 00-369-5927
In stock
NSN: 5331-00-369-5927
FSC Code: 5331
MPN: ST100108

5331-01-163-4249 (ST1050-145)

NIIN: 01-163-4249
In stock
NSN: 5331-01-163-4249
FSC Code: 5331
MPN: ST1050145

5331-01-005-9048 (ST1000-241)

NIIN: 01-005-9048
In stock
NSN: 5331-01-005-9048
FSC Code: 5331
MPN: ST1000241

5331-01-008-6823 (ST1000-156)

NIIN: 01-008-6823
In stock
NSN: 5331-01-008-6823
FSC Code: 5331
MPN: ST1000156

5331-01-163-6390 (ST1000-111)

NIIN: 01-163-6390
In stock
NSN: 5331-01-163-6390
FSC Code: 5331
MPN: ST1000111

5331-01-008-6821 (ST1000-045)

NIIN: 01-008-6821
In stock
NSN: 5331-01-008-6821
FSC Code: 5331
MPN: ST1000045

5331-01-008-6819 (ST1000-121)

NIIN: 01-008-6819
In stock
NSN: 5331-01-008-6819
FSC Code: 5331
MPN: ST1000121

5331-01-279-2227 (ST070171AV)

NIIN: 01-279-2227
In stock
NSN: 5331-01-279-2227
FSC Code: 5331
MPN: ST070171AV

5331-01-334-8950 (ST1000-048)

NIIN: 01-334-8950
In stock
NSN: 5331-01-334-8950
FSC Code: 5331
MPN: ST1000048

5331-01-277-8812 (ST070161AV)

NIIN: 01-277-8812
In stock
NSN: 5331-01-277-8812
FSC Code: 5331
MPN: ST070161AV

5331-01-008-6826 (ST1000-030)

NIIN: 01-008-6826
In stock
NSN: 5331-01-008-6826
FSC Code: 5331
MPN: ST1000030

5331-01-179-2257 (ST072-0150T-1C-PB-5)

NIIN: 01-179-2257
In stock
NSN: 5331-01-179-2257
FSC Code: 5331
MPN: ST0720150T1CPB5

5331-01-279-2226 (ST070162AV)

NIIN: 01-279-2226
In stock
NSN: 5331-01-279-2226
FSC Code: 5331
MPN: ST070162AV

5331-01-288-9398 (ST052100BF60C)

NIIN: 01-288-9398
In stock
NSN: 5331-01-288-9398
FSC Code: 5331
MPN: ST052100BF60C

5331-01-277-8811 (ST070160AV)

NIIN: 01-277-8811
In stock
NSN: 5331-01-277-8811
FSC Code: 5331
MPN: ST070160AV

5331-01-200-6012 (ST050-0150F-11CAPIECE)

NIIN: 01-200-6012
In stock
NSN: 5331-01-200-6012
FSC Code: 5331
MPN: ST0500150F11CAPIECE

5331-01-200-6011 (ST050-0150F-11CAPIEC)

NIIN: 01-200-6011
In stock
NSN: 5331-01-200-6011
FSC Code: 5331
MPN: ST0500150F11CAPIEC

5331-01-269-7451 (ST00598)

NIIN: 01-269-7451
In stock
NSN: 5331-01-269-7451
FSC Code: 5331
MPN: ST00598

5331-01-333-2684 (ST01169)

NIIN: 01-333-2684
In stock
NSN: 5331-01-333-2684
FSC Code: 5331
MPN: ST01169

5331-01-331-8040 (ST01168)

NIIN: 01-331-8040
In stock
NSN: 5331-01-331-8040
FSC Code: 5331
MPN: ST01168

5331-01-334-3454 (ST01170)

NIIN: 01-334-3454
In stock
NSN: 5331-01-334-3454
FSC Code: 5331
MPN: ST01170

5331-01-418-1027 (DLT30MALS0000)

NIIN: 01-418-1027
In stock
NSN: 5331-01-418-1027
FSC Code: 5331
MPN: DLT30MALS0000

5331-01-278-3792 (ST00399)

NIIN: 01-278-3792
In stock
NSN: 5331-01-278-3792
FSC Code: 5331
MPN: ST00399

5331-01-417-8974 (DLT20MALS0000)

NIIN: 01-417-8974
In stock
NSN: 5331-01-417-8974
FSC Code: 5331
MPN: DLT20MALS0000

5331-01-195-2868 (SSN615-518-4847551PIECE9)

NIIN: 01-195-2868
In stock
NSN: 5331-01-195-2868
FSC Code: 5331
MPN: SSN6155184847551PIECE9

5331-00-311-9502 (SSN593-522-1862014PC67)

NIIN: 00-311-9502
In stock
NSN: 5331-00-311-9502
FSC Code: 5331
MPN: SSN5935221862014PC67

5331-01-453-9556 (DL5-17)

NIIN: 01-453-9556
In stock
NSN: 5331-01-453-9556
FSC Code: 5331
MPN: DL517

5331-00-144-6176 (SSN646-115-2482386PC7)

NIIN: 00-144-6176
In stock
NSN: 5331-00-144-6176
FSC Code: 5331
MPN: SSN6461152482386PC7

5331-00-988-9255 (SSN593-522-1701938ALTCPC27)

NIIN: 00-988-9255
In stock
NSN: 5331-00-988-9255
FSC Code: 5331
MPN: SSN5935221701938ALTCPC27

5331-01-205-0861 (SSN588-203-2540029)

NIIN: 01-205-0861
In stock
NSN: 5331-01-205-0861
FSC Code: 5331
MPN: SSN5882032540029

5331-00-965-5487 (SSN578-203-1737539PC-19)

NIIN: 00-965-5487
In stock
NSN: 5331-00-965-5487
FSC Code: 5331
MPN: SSN5782031737539PC19

5331-01-268-0163 (SSCY7350-9)

NIIN: 01-268-0163
In stock
NSN: 5331-01-268-0163
FSC Code: 5331
MPN: SSCY73509

5331-01-469-8233 (DJP)

NIIN: 01-469-8233
In stock
NSN: 5331-01-469-8233
FSC Code: 5331
MPN: DJP

5331-01-469-8234 (DJP)

NIIN: 01-469-8234
In stock
NSN: 5331-01-469-8234
FSC Code: 5331
MPN: DJP

5331-01-469-8237 (DJP)

NIIN: 01-469-8237
In stock
NSN: 5331-01-469-8237
FSC Code: 5331
MPN: DJP

5331-01-454-6214 (DJ-63)

NIIN: 01-454-6214
In stock
NSN: 5331-01-454-6214
FSC Code: 5331
MPN: DJ63

5331-01-454-6215 (DJ-77)

NIIN: 01-454-6215
In stock
NSN: 5331-01-454-6215
FSC Code: 5331
MPN: DJ77

5331-01-454-6225 (DJ-2611)

NIIN: 01-454-6225
In stock
NSN: 5331-01-454-6225
FSC Code: 5331
MPN: DJ2611

5331-01-454-6227 (DJ-2617)

NIIN: 01-454-6227
In stock
NSN: 5331-01-454-6227
FSC Code: 5331
MPN: DJ2617

5331-01-454-6221 (DJ-108)

NIIN: 01-454-6221
In stock
NSN: 5331-01-454-6221
FSC Code: 5331
MPN: DJ108

5331-01-454-6224 (DJ-109)

NIIN: 01-454-6224
In stock
NSN: 5331-01-454-6224
FSC Code: 5331
MPN: DJ109

5331-01-264-5928 (SS800-337)

NIIN: 01-264-5928
In stock
NSN: 5331-01-264-5928
FSC Code: 5331
MPN: SS800337

5331-01-264-5925 (SS800-244)

NIIN: 01-264-5925
In stock
NSN: 5331-01-264-5925
FSC Code: 5331
MPN: SS800244

5331-01-264-5922 (SS800-67)

NIIN: 01-264-5922
In stock
NSN: 5331-01-264-5922
FSC Code: 5331
MPN: SS80067