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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.

5331-01-281-9000 (X-208)

NIIN: 01-281-9000
In stock
NSN: 5331-01-281-9000
FSC Code: 5331
MPN: X208

5331-01-503-6250 (FTR13202)

NIIN: 01-503-6250
In stock
NSN: 5331-01-503-6250
FSC Code: 5331
MPN: FTR13202

5331-00-599-6267 (X1710)

NIIN: 00-599-6267
In stock
NSN: 5331-00-599-6267
FSC Code: 5331
MPN: X1710

5331-00-891-4368 (X1514T253C)

NIIN: 00-891-4368
In stock
NSN: 5331-00-891-4368
FSC Code: 5331
MPN: X1514T253C

5331-00-985-4210 (X1524T009H)

NIIN: 00-985-4210
In stock
NSN: 5331-00-985-4210
FSC Code: 5331
MPN: X1524T009H

5331-00-985-3128 (X1514T326E)

NIIN: 00-985-3128
In stock
NSN: 5331-00-985-3128
FSC Code: 5331
MPN: X1514T326E

5331-00-826-2569 (X1514T330C)

NIIN: 00-826-2569
In stock
NSN: 5331-00-826-2569
FSC Code: 5331
MPN: X1514T330C

5331-00-891-4369 (X1514T248C)

NIIN: 00-891-4369
In stock
NSN: 5331-00-891-4369
FSC Code: 5331
MPN: X1514T248C

5331-00-995-2572 (X1514T228B)

NIIN: 00-995-2572
In stock
NSN: 5331-00-995-2572
FSC Code: 5331
MPN: X1514T228B

5331-00-988-0341 (X1514T220E)

NIIN: 00-988-0341
In stock
NSN: 5331-00-988-0341
FSC Code: 5331
MPN: X1514T220E

5331-00-825-5716 (X1514T220C)

NIIN: 00-825-5716
In stock
NSN: 5331-00-825-5716
FSC Code: 5331
MPN: X1514T220C

5331-00-985-3139 (X1514T216C)

NIIN: 00-985-3139
In stock
NSN: 5331-00-985-3139
FSC Code: 5331
MPN: X1514T216C

5331-00-826-2568 (X1514T212C)

NIIN: 00-826-2568
In stock
NSN: 5331-00-826-2568
FSC Code: 5331
MPN: X1514T212C

5331-00-985-3132 (X1514T008C)

NIIN: 00-985-3132
In stock
NSN: 5331-00-985-3132
FSC Code: 5331
MPN: X1514T008C

5331-00-580-1652 (X1363T15)

NIIN: 00-580-1652
In stock
NSN: 5331-00-580-1652
FSC Code: 5331
MPN: X1363T15

5331-00-580-1653 (X1363T17)

NIIN: 00-580-1653
In stock
NSN: 5331-00-580-1653
FSC Code: 5331
MPN: X1363T17

5331-00-580-1648 (X1363T12)

NIIN: 00-580-1648
In stock
NSN: 5331-00-580-1648
FSC Code: 5331
MPN: X1363T12

5331-00-580-1649 (X1363T13)

NIIN: 00-580-1649
In stock
NSN: 5331-00-580-1649
FSC Code: 5331
MPN: X1363T13

5331-01-565-4569 (FSPP-309-04-319)

NIIN: 01-565-4569
In stock
NSN: 5331-01-565-4569
FSC Code: 5331
MPN: FSPP30904319

5331-01-565-5365 (FSPP-309-04-017)

NIIN: 01-565-5365
In stock
NSN: 5331-01-565-5365
FSC Code: 5331
MPN: FSPP30904017

5331-01-565-5346 (FSPP-309-04-018)

NIIN: 01-565-5346
In stock
NSN: 5331-01-565-5346
FSC Code: 5331
MPN: FSPP30904018

5331-01-565-2189 (FSPP-309-04-123)

NIIN: 01-565-2189
In stock
NSN: 5331-01-565-2189
FSC Code: 5331
MPN: FSPP30904123

5331-01-565-1683 (FSPP-309-04-019)

NIIN: 01-565-1683
In stock
NSN: 5331-01-565-1683
FSC Code: 5331
MPN: FSPP30904019

5331-01-561-3076 (FSPP-309-04-015)

NIIN: 01-561-3076
In stock
NSN: 5331-01-561-3076
FSC Code: 5331
MPN: FSPP30904015

5331-01-565-1685 (FSPP-309-04-021)

NIIN: 01-565-1685
In stock
NSN: 5331-01-565-1685
FSC Code: 5331
MPN: FSPP30904021

5331-01-336-8779 (X12222)

NIIN: 01-336-8779
In stock
NSN: 5331-01-336-8779
FSC Code: 5331
MPN: X12222

5331-01-344-9581 (FSH42-008)

NIIN: 01-344-9581
In stock
NSN: 5331-01-344-9581
FSC Code: 5331
MPN: FSH42008

5331-01-237-1998 (X-11352)

NIIN: 01-237-1998
In stock
NSN: 5331-01-237-1998
FSC Code: 5331
MPN: X11352

5331-01-467-9054 (FRU-8516-020)

NIIN: 01-467-9054
In stock
NSN: 5331-01-467-9054
FSC Code: 5331
MPN: FRU8516020

5331-99-346-9933 (FRS40317/A243)

NIIN: 99-346-9933
In stock
NSN: 5331-99-346-9933
FSC Code: 5331
MPN: FRS40317A243

5331-01-529-8058 (FRS41917-28)

NIIN: 01-529-8058
In stock
NSN: 5331-01-529-8058
FSC Code: 5331
MPN: FRS4191728

5331-99-537-1115 (FRS40317A234)

NIIN: 99-537-1115
In stock
NSN: 5331-99-537-1115
FSC Code: 5331
MPN: FRS40317A234

5331-99-262-7335 (FRS40217A163)

NIIN: 99-262-7335
In stock
NSN: 5331-99-262-7335
FSC Code: 5331
MPN: FRS40217A163

5331-99-219-3274 (FRS40317/A236)

NIIN: 99-219-3274
In stock
NSN: 5331-99-219-3274
FSC Code: 5331
MPN: FRS40317A236

5331-99-612-6917 (FRS40317A230)

NIIN: 99-612-6917
In stock
NSN: 5331-99-612-6917
FSC Code: 5331
MPN: FRS40317A230

5331-99-562-6168 (FRS40417A329)

NIIN: 99-562-6168
In stock
NSN: 5331-99-562-6168
FSC Code: 5331
MPN: FRS40417A329

5331-99-535-7135 (FRS40317/A231)

NIIN: 99-535-7135
In stock
NSN: 5331-99-535-7135
FSC Code: 5331
MPN: FRS40317A231

5331-99-225-6297 (FRS40217/A151)

NIIN: 99-225-6297
In stock
NSN: 5331-99-225-6297
FSC Code: 5331
MPN: FRS40217A151

5331-99-244-8233 (FRS40317/A227)

NIIN: 99-244-8233
In stock
NSN: 5331-99-244-8233
FSC Code: 5331
MPN: FRS40317A227

5331-99-517-3436 (FRS40217/A142)

NIIN: 99-517-3436
In stock
NSN: 5331-99-517-3436
FSC Code: 5331
MPN: FRS40217A142

5331-99-666-4347 (FRS41917-28)

NIIN: 99-666-4347
In stock
NSN: 5331-99-666-4347
FSC Code: 5331
MPN: FRS4191728

5331-99-215-7232 (FRS40217/A144)

NIIN: 99-215-7232
In stock
NSN: 5331-99-215-7232
FSC Code: 5331
MPN: FRS40217A144

5331-99-663-5873 (FRS40317/A229)

NIIN: 99-663-5873
In stock
NSN: 5331-99-663-5873
FSC Code: 5331
MPN: FRS40317A229

5331-99-709-4863 (FRS40217/A136)

NIIN: 99-709-4863
In stock
NSN: 5331-99-709-4863
FSC Code: 5331
MPN: FRS40217A136

5331-99-401-8876 (FRS40317/A228)

NIIN: 99-401-8876
In stock
NSN: 5331-99-401-8876
FSC Code: 5331
MPN: FRS40317A228

5331-99-957-4702 (FRS40217/A156)

NIIN: 99-957-4702
In stock
NSN: 5331-99-957-4702
FSC Code: 5331
MPN: FRS40217A156

5331-99-810-5558 (FRS40217/A116)

NIIN: 99-810-5558
In stock
NSN: 5331-99-810-5558
FSC Code: 5331
MPN: FRS40217A116

5331-99-988-4187 (FRS40317/A233)

NIIN: 99-988-4187
In stock
NSN: 5331-99-988-4187
FSC Code: 5331
MPN: FRS40317A233