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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.

5331-01-395-3621 (OD18335)

NIIN: 01-395-3621
In stock
NSN: 5331-01-395-3621
FSC Code: 5331
MPN: OD18335

5331-01-342-5425 (OBP-9-90)

NIIN: 01-342-5425
In stock
NSN: 5331-01-342-5425
FSC Code: 5331
MPN: OBP990

5331-01-341-9363 (OBP-11-90)

NIIN: 01-341-9363
In stock
NSN: 5331-01-341-9363
FSC Code: 5331
MPN: OBP1190

5331-01-341-9362 (OBP-18-90)

NIIN: 01-341-9362
In stock
NSN: 5331-01-341-9362
FSC Code: 5331
MPN: OBP1890

5331-01-342-5424 (OBP-18-90)

NIIN: 01-342-5424
In stock
NSN: 5331-01-342-5424
FSC Code: 5331
MPN: OBP1890

5331-01-527-2231 (RM-0496-24)

NIIN: 01-527-2231
In stock
NSN: 5331-01-527-2231
FSC Code: 5331
MPN: RM049624

5331-01-527-2054 (OA-0390)

NIIN: 01-527-2054
In stock
NSN: 5331-01-527-2054
FSC Code: 5331
MPN: OA0390

5331-01-527-2071 (OA-0380)

NIIN: 01-527-2071
In stock
NSN: 5331-01-527-2071
FSC Code: 5331
MPN: OA0380

5331-01-527-2047 (OA-0210)

NIIN: 01-527-2047
In stock
NSN: 5331-01-527-2047
FSC Code: 5331
MPN: OA0210

5331-01-527-2041 (OA-0370)

NIIN: 01-527-2041
In stock
NSN: 5331-01-527-2041
FSC Code: 5331
MPN: OA0370

5331-01-527-2127 (OA-0230)

NIIN: 01-527-2127
In stock
NSN: 5331-01-527-2127
FSC Code: 5331
MPN: OA0230

5331-01-527-2221 (RM-0346-24)

NIIN: 01-527-2221
In stock
NSN: 5331-01-527-2221
FSC Code: 5331
MPN: RM034624

5331-01-527-2015 (OA-0300)

NIIN: 01-527-2015
In stock
NSN: 5331-01-527-2015
FSC Code: 5331
MPN: OA0300

5331-01-451-1733 (RM-0415-30)

NIIN: 01-451-1733
In stock
NSN: 5331-01-451-1733
FSC Code: 5331
MPN: RM041530

5331-01-527-2219 (RM-0291-16)

NIIN: 01-527-2219
In stock
NSN: 5331-01-527-2219
FSC Code: 5331
MPN: RM029116

5331-01-527-2024 (OA-0040)

NIIN: 01-527-2024
In stock
NSN: 5331-01-527-2024
FSC Code: 5331
MPN: OA0040

5331-01-454-4776 (RM-0371-16)

NIIN: 01-454-4776
In stock
NSN: 5331-01-454-4776
FSC Code: 5331
MPN: RM037116

5331-01-527-2130 (OA-0070)

NIIN: 01-527-2130
In stock
NSN: 5331-01-527-2130
FSC Code: 5331
MPN: OA0070

5331-01-527-2037 (OA-0060)

NIIN: 01-527-2037
In stock
NSN: 5331-01-527-2037
FSC Code: 5331
MPN: OA0060

5331-01-527-2061 (OA-0120)

NIIN: 01-527-2061
In stock
NSN: 5331-01-527-2061
FSC Code: 5331
MPN: OA0120

5331-01-527-2057 (OA-0080)

NIIN: 01-527-2057
In stock
NSN: 5331-01-527-2057
FSC Code: 5331
MPN: OA0080

5331-12-315-1191 (OR5717420-S56L1)

NIIN: 12-315-1191
In stock
NSN: 5331-12-315-1191
FSC Code: 5331
MPN: OR5717420S56L1

5331-01-459-6767 (O103)

NIIN: 01-459-6767
In stock
NSN: 5331-01-459-6767
FSC Code: 5331
MPN: O103

5331-14-478-7929 (PRP019-7377)

NIIN: 14-478-7929
In stock
NSN: 5331-14-478-7929
FSC Code: 5331
MPN: PRP0197377

5331-01-563-3524 (NTEC09-0-018)

NIIN: 01-563-3524
In stock
NSN: 5331-01-563-3524
FSC Code: 5331
MPN: NTEC090018

5331-01-563-3525 (NTEC09-0-010)

NIIN: 01-563-3525
In stock
NSN: 5331-01-563-3525
FSC Code: 5331
MPN: NTEC090010

5331-01-563-3523 (NTEC09-0-011)

NIIN: 01-563-3523
In stock
NSN: 5331-01-563-3523
FSC Code: 5331
MPN: NTEC090011

5331-01-563-3526 (NTEC09-0-012)

NIIN: 01-563-3526
In stock
NSN: 5331-01-563-3526
FSC Code: 5331
MPN: NTEC090012

5331-01-572-3825 (NS-3983)

NIIN: 01-572-3825
In stock
NSN: 5331-01-572-3825
FSC Code: 5331
MPN: NS3983

5331-01-572-3827 (NS-3983)

NIIN: 01-572-3827
In stock
NSN: 5331-01-572-3827
FSC Code: 5331
MPN: NS3983

5331-01-387-5392 (NS-232)

NIIN: 01-387-5392
In stock
NSN: 5331-01-387-5392
FSC Code: 5331
MPN: NS232

5331-01-561-7893 (NO552-2-014)

NIIN: 01-561-7893
In stock
NSN: 5331-01-561-7893
FSC Code: 5331
MPN: NO5522014

5331-01-371-1653 (NO.)

NIIN: 01-371-1653
In stock
NSN: 5331-01-371-1653
FSC Code: 5331
MPN: NO

5331-01-371-5129 (NO.13)

NIIN: 01-371-5129
In stock
NSN: 5331-01-371-5129
FSC Code: 5331
MPN: NO13

5331-01-368-0375 (NNK62-7-10)

NIIN: 01-368-0375
In stock
NSN: 5331-01-368-0375
FSC Code: 5331
MPN: NNK62710

5331-01-485-4212 (NK3000636-50)

NIIN: 01-485-4212
In stock
NSN: 5331-01-485-4212
FSC Code: 5331
MPN: NK300063650

5331-01-392-5101 (NK3467-8)

NIIN: 01-392-5101
In stock
NSN: 5331-01-392-5101
FSC Code: 5331
MPN: NK34678

5331-01-467-9248 (NK1512-1)

NIIN: 01-467-9248
In stock
NSN: 5331-01-467-9248
FSC Code: 5331
MPN: NK15121

5331-01-562-9140 (NH102103-2293AEITEM4)

NIIN: 01-562-9140
In stock
NSN: 5331-01-562-9140
FSC Code: 5331
MPN: NH1021032293AEITEM4

5331-01-425-8414 (NF-4007-B)

NIIN: 01-425-8414
In stock
NSN: 5331-01-425-8414
FSC Code: 5331
MPN: NF4007B

5331-01-425-8406 (NF-4008-B)

NIIN: 01-425-8406
In stock
NSN: 5331-01-425-8406
FSC Code: 5331
MPN: NF4008B

5331-01-425-8433 (NF-4005-B)

NIIN: 01-425-8433
In stock
NSN: 5331-01-425-8433
FSC Code: 5331
MPN: NF4005B

5331-01-425-8409 (NF-4007-A)

NIIN: 01-425-8409
In stock
NSN: 5331-01-425-8409
FSC Code: 5331
MPN: NF4007A

5331-01-419-3873 (NF-109)

NIIN: 01-419-3873
In stock
NSN: 5331-01-419-3873
FSC Code: 5331
MPN: NF109

5331-01-425-8418 (NF-4005-C)

NIIN: 01-425-8418
In stock
NSN: 5331-01-425-8418
FSC Code: 5331
MPN: NF4005C

5331-01-425-8612 (NF-4003-E)

NIIN: 01-425-8612
In stock
NSN: 5331-01-425-8612
FSC Code: 5331
MPN: NF4003E

5331-99-614-3292 (SA1666-12)

NIIN: 99-614-3292
In stock
NSN: 5331-99-614-3292
FSC Code: 5331
MPN: SA166612

5331-99-596-9896 (ND5125)

NIIN: 99-596-9896
In stock
NSN: 5331-99-596-9896
FSC Code: 5331
MPN: ND5125