Skip to content

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.

5331-01-426-2537 (08-0110-71870-560)

NIIN: 01-426-2537
In stock
NSN: 5331-01-426-2537
FSC Code: 5331
MPN: 08011071870560

5331-01-500-1209 (080-04273-078)

NIIN: 01-500-1209
In stock
NSN: 5331-01-500-1209
FSC Code: 5331
MPN: 08004273078

5331-01-492-5870 (080-04273-420)

NIIN: 01-492-5870
In stock
NSN: 5331-01-492-5870
FSC Code: 5331
MPN: 08004273420

5331-01-426-1817 (ORUD000071000NG)

NIIN: 01-426-1817
In stock
NSN: 5331-01-426-1817
FSC Code: 5331
MPN: ORUD000071000NG

5331-01-004-6976 (2731877PC51)

NIIN: 01-004-6976
In stock
NSN: 5331-01-004-6976
FSC Code: 5331
MPN: 2731877PC51

5331-01-434-3389 (0800-075-11H)

NIIN: 01-434-3389
In stock
NSN: 5331-01-434-3389
FSC Code: 5331
MPN: 080007511H

5331-01-111-8437 (2730-806)

NIIN: 01-111-8437
In stock
NSN: 5331-01-111-8437
FSC Code: 5331
MPN: 2730806

5331-01-255-1847 (2730-145)

NIIN: 01-255-1847
In stock
NSN: 5331-01-255-1847
FSC Code: 5331
MPN: 2730145

5331-00-623-1126 (2730375P11)

NIIN: 00-623-1126
In stock
NSN: 5331-00-623-1126
FSC Code: 5331
MPN: 2730375P11

5331-00-133-0262 (27-300-01019)

NIIN: 00-133-0262
In stock
NSN: 5331-00-133-0262
FSC Code: 5331
MPN: 2730001019

5331-01-255-1846 (2730-145)

NIIN: 01-255-1846
In stock
NSN: 5331-01-255-1846
FSC Code: 5331
MPN: 2730145

5331-00-599-2044 (27-3)

NIIN: 00-599-2044
In stock
NSN: 5331-00-599-2044
FSC Code: 5331
MPN: 273

5331-01-129-6793 (273-00)

NIIN: 01-129-6793
In stock
NSN: 5331-01-129-6793
FSC Code: 5331
MPN: 27300

5331-01-439-9957 (07E33A13A)

NIIN: 01-439-9957
In stock
NSN: 5331-01-439-9957
FSC Code: 5331
MPN: 07E33A13A

5331-01-357-8007 (07A568-159S)

NIIN: 01-357-8007
In stock
NSN: 5331-01-357-8007
FSC Code: 5331
MPN: 07A568159S

5331-01-436-8506 (SAE-AS83461/1)

NIIN: 01-436-8506
In stock
NSN: 5331-01-436-8506
FSC Code: 5331
MPN: SAEAS834611

5331-01-391-3781 (2-229S604-70)

NIIN: 01-391-3781
In stock
NSN: 5331-01-391-3781
FSC Code: 5331
MPN: 2229S60470

5331-01-414-5770 (2-128S604-70)

NIIN: 01-414-5770
In stock
NSN: 5331-01-414-5770
FSC Code: 5331
MPN: 2128S60470

5331-01-387-6319 (2-114S604-70)

NIIN: 01-387-6319
In stock
NSN: 5331-01-387-6319
FSC Code: 5331
MPN: 2114S60470

5331-01-067-9614 (272756A)

NIIN: 01-067-9614
In stock
NSN: 5331-01-067-9614
FSC Code: 5331
MPN: 272756A

5331-01-391-3037 (2-153N756-75)

NIIN: 01-391-3037
In stock
NSN: 5331-01-391-3037
FSC Code: 5331
MPN: 2153N75675

5331-01-387-7506 (803-7106793-4-1-031)

NIIN: 01-387-7506
In stock
NSN: 5331-01-387-7506
FSC Code: 5331
MPN: 803710679341031

5331-01-391-3000 (SAE-AS83461/1)

NIIN: 01-391-3000
In stock
NSN: 5331-01-391-3000
FSC Code: 5331
MPN: SAEAS834611

5331-01-352-3183 (AS220S59-70)

NIIN: 01-352-3183
In stock
NSN: 5331-01-352-3183
FSC Code: 5331
MPN: AS220S5970

5331-01-557-3025 (AS908S59-70)

NIIN: 01-557-3025
In stock
NSN: 5331-01-557-3025
FSC Code: 5331
MPN: AS908S5970

5331-00-584-2376 (27-27)

NIIN: 00-584-2376
In stock
NSN: 5331-00-584-2376
FSC Code: 5331
MPN: 2727

5331-00-584-2371 (27-23)

NIIN: 00-584-2371
In stock
NSN: 5331-00-584-2371
FSC Code: 5331
MPN: 2723

5331-01-181-0600 (272-02)

NIIN: 01-181-0600
In stock
NSN: 5331-01-181-0600
FSC Code: 5331
MPN: 27202

5331-01-304-2373 (272-01)

NIIN: 01-304-2373
In stock
NSN: 5331-01-304-2373
FSC Code: 5331
MPN: 27201

5331-14-265-5070 (07874F3300A50D6)

NIIN: 14-265-5070
In stock
NSN: 5331-14-265-5070
FSC Code: 5331
MPN: 07874F3300A50D6

5331-01-483-9085 (078-721400)

NIIN: 01-483-9085
In stock
NSN: 5331-01-483-9085
FSC Code: 5331
MPN: 078721400

5331-12-157-1989 (0R184-2X5-7-70NBR769)

NIIN: 12-157-1989
In stock
NSN: 5331-12-157-1989
FSC Code: 5331
MPN: 0R1842X5770NBR769

5331-01-349-9319 (0-7837/1010/0FIND204)

NIIN: 01-349-9319
In stock
NSN: 5331-01-349-9319
FSC Code: 5331
MPN: 0783710100FIND204

5331-12-147-6107 (WAF242-55822/23-POSA13)

NIIN: 12-147-6107
In stock
NSN: 5331-12-147-6107
FSC Code: 5331
MPN: WAF2425582223POSA13

5331-01-349-9317 (0-7837/1010/0FIND209)

NIIN: 01-349-9317
In stock
NSN: 5331-01-349-9317
FSC Code: 5331
MPN: 0783710100FIND209

5331-01-351-2606 (0-7837/1010/0)

NIIN: 01-351-2606
In stock
NSN: 5331-01-351-2606
FSC Code: 5331
MPN: 0783710100

5331-12-163-3235 (OR205X5-72NBR/872)

NIIN: 12-163-3235
In stock
NSN: 5331-12-163-3235
FSC Code: 5331
MPN: OR205X572NBR872

5331-01-159-8395 (27170-6215)

NIIN: 01-159-8395
In stock
NSN: 5331-01-159-8395
FSC Code: 5331
MPN: 271706215

5331-01-379-2274 (0771C0027-1)

NIIN: 01-379-2274
In stock
NSN: 5331-01-379-2274
FSC Code: 5331
MPN: 0771C00271

5331-01-379-3147 (0771C0027-11)

NIIN: 01-379-3147
In stock
NSN: 5331-01-379-3147
FSC Code: 5331
MPN: 0771C002711

5331-01-341-2139 (0771C0027-4)

NIIN: 01-341-2139
In stock
NSN: 5331-01-341-2139
FSC Code: 5331
MPN: 0771C00274

5331-01-341-2138 (0771C0027-3)

NIIN: 01-341-2138
In stock
NSN: 5331-01-341-2138
FSC Code: 5331
MPN: 0771C00273

5331-00-954-6747 (2-71449-6)

NIIN: 00-954-6747
In stock
NSN: 5331-00-954-6747
FSC Code: 5331
MPN: 2714496

5331-01-572-5538 (R0088357-0301)

NIIN: 01-572-5538
In stock
NSN: 5331-01-572-5538
FSC Code: 5331
MPN: R00883570301

5331-01-528-6654 (07620301WA-06)

NIIN: 01-528-6654
In stock
NSN: 5331-01-528-6654
FSC Code: 5331
MPN: 07620301WA06

5331-01-406-3904 (076010)

NIIN: 01-406-3904
In stock
NSN: 5331-01-406-3904
FSC Code: 5331
MPN: 076010

5331-01-293-9424 (27-127)

NIIN: 01-293-9424
In stock
NSN: 5331-01-293-9424
FSC Code: 5331
MPN: 27127

5331-01-321-5969 (27127772-07)

NIIN: 01-321-5969
In stock
NSN: 5331-01-321-5969
FSC Code: 5331
MPN: 2712777207