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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.

5331-01-597-9575 (1855540C1)

NIIN: 01-597-9575
In stock
NSN: 5331-01-597-9575
FSC Code: 5331
MPN: 1855540C1

5331-01-597-6325 (6HB506B)

NIIN: 01-597-6325
In stock
NSN: 5331-01-597-6325
FSC Code: 5331
MPN: 6HB506B

5331-01-597-6323 (24KP991)

NIIN: 01-597-6323
In stock
NSN: 5331-01-597-6323
FSC Code: 5331
MPN: 24KP991

5331-01-597-5888 (M22050-3-906)

NIIN: 01-597-5888
In stock
NSN: 5331-01-597-5888
FSC Code: 5331
MPN: M220503906

5331-01-597-3056 (57502000)

NIIN: 01-597-3056
In stock
NSN: 5331-01-597-3056
FSC Code: 5331
MPN: 57502000

5331-01-597-0850 (17601ITEM51)

NIIN: 01-597-0850
In stock
NSN: 5331-01-597-0850
FSC Code: 5331
MPN: 17601ITEM51

5331-01-597-0293 (0324660)

NIIN: 01-597-0293
In stock
NSN: 5331-01-597-0293
FSC Code: 5331
MPN: 0324660

5331-01-598-0012 (5-X-1367)

NIIN: 01-598-0012
In stock
NSN: 5331-01-598-0012
FSC Code: 5331
MPN: 5X1367

5331-01-597-9202 (26KP762)

NIIN: 01-597-9202
In stock
NSN: 5331-01-597-9202
FSC Code: 5331
MPN: 26KP762

5331-01-597-8846 (26KP847)

NIIN: 01-597-8846
In stock
NSN: 5331-01-597-8846
FSC Code: 5331
MPN: 26KP847

5331-01-597-8839 (26KP846)

NIIN: 01-597-8839
In stock
NSN: 5331-01-597-8839
FSC Code: 5331
MPN: 26KP846

5331-01-597-7256 (955C165-59)

NIIN: 01-597-7256
In stock
NSN: 5331-01-597-7256
FSC Code: 5331
MPN: 955C16559

5331-01-597-2288 (320944)

NIIN: 01-597-2288
In stock
NSN: 5331-01-597-2288
FSC Code: 5331
MPN: 320944

5331-01-597-2071 (AS568-032)

NIIN: 01-597-2071
In stock
NSN: 5331-01-597-2071
FSC Code: 5331
MPN: AS568032

5331-01-597-2035 (17401PC19)

NIIN: 01-597-2035
In stock
NSN: 5331-01-597-2035
FSC Code: 5331
MPN: 17401PC19

5331-01-598-1300 (CL173-70)

NIIN: 01-598-1300
In stock
NSN: 5331-01-598-1300
FSC Code: 5331
MPN: CL17370

5331-01-597-9126 (26KP763)

NIIN: 01-597-9126
In stock
NSN: 5331-01-597-9126
FSC Code: 5331
MPN: 26KP763

5331-01-597-8819 (3KK245)

NIIN: 01-597-8819
In stock
NSN: 5331-01-597-8819
FSC Code: 5331
MPN: 3KK245

5331-01-597-6217 (14-3256)

NIIN: 01-597-6217
In stock
NSN: 5331-01-597-6217
FSC Code: 5331
MPN: 143256

5331-01-597-3742 (C0873 2-019)

NIIN: 01-597-3742
In stock
NSN: 5331-01-597-3742
FSC Code: 5331
MPN: C08732019

5331-01-597-2984 (0000-363-M005)

NIIN: 01-597-2984
In stock
NSN: 5331-01-597-2984
FSC Code: 5331
MPN: 0000363M005

5331-01-597-2022 (113614)

NIIN: 01-597-2022
In stock
NSN: 5331-01-597-2022
FSC Code: 5331
MPN: 113614

5331-01-597-2020 (064019-103)

NIIN: 01-597-2020
In stock
NSN: 5331-01-597-2020
FSC Code: 5331
MPN: 064019103

5331-01-597-3701 (1807323C1)

NIIN: 01-597-3701
In stock
NSN: 5331-01-597-3701
FSC Code: 5331
MPN: 1807323C1

5331-01-597-3510 (57490000)

NIIN: 01-597-3510
In stock
NSN: 5331-01-597-3510
FSC Code: 5331
MPN: 57490000

5331-01-597-2243 (4982500)

NIIN: 01-597-2243
In stock
NSN: 5331-01-597-2243
FSC Code: 5331
MPN: 4982500

5331-01-597-1589 (37466N PL ITEM 34)

NIIN: 01-597-1589
In stock
NSN: 5331-01-597-1589
FSC Code: 5331
MPN: 37466NPLITEM34

5331-01-597-9195 (26KP761)

NIIN: 01-597-9195
In stock
NSN: 5331-01-597-9195
FSC Code: 5331
MPN: 26KP761

5331-01-597-6621 (818-07713-104)

NIIN: 01-597-6621
In stock
NSN: 5331-01-597-6621
FSC Code: 5331
MPN: 81807713104

5331-01-597-6583 (95358131)

NIIN: 01-597-6583
In stock
NSN: 5331-01-597-6583
FSC Code: 5331
MPN: 95358131

5331-01-597-4161 (0313754)

NIIN: 01-597-4161
In stock
NSN: 5331-01-597-4161
FSC Code: 5331
MPN: 0313754

5331-01-597-2975 (0000-355-M005)

NIIN: 01-597-2975
In stock
NSN: 5331-01-597-2975
FSC Code: 5331
MPN: 0000355M005

5331-01-597-2968 (0000-340-M005)

NIIN: 01-597-2968
In stock
NSN: 5331-01-597-2968
FSC Code: 5331
MPN: 0000340M005

5331-01-597-2016 (064019-030)

NIIN: 01-597-2016
In stock
NSN: 5331-01-597-2016
FSC Code: 5331
MPN: 064019030

5331-01-597-8837 (19KP955)

NIIN: 01-597-8837
In stock
NSN: 5331-01-597-8837
FSC Code: 5331
MPN: 19KP955

5331-01-597-7251 (124844)

NIIN: 01-597-7251
In stock
NSN: 5331-01-597-7251
FSC Code: 5331
MPN: 124844

5331-01-597-6722 (2GL675)

NIIN: 01-597-6722
In stock
NSN: 5331-01-597-6722
FSC Code: 5331
MPN: 2GL675

5331-01-597-0873 (25KP692)

NIIN: 01-597-0873
In stock
NSN: 5331-01-597-0873
FSC Code: 5331
MPN: 25KP692

5331-01-597-0368 (0313446)

NIIN: 01-597-0368
In stock
NSN: 5331-01-597-0368
FSC Code: 5331
MPN: 0313446

5331-01-597-0290 (0352809)

NIIN: 01-597-0290
In stock
NSN: 5331-01-597-0290
FSC Code: 5331
MPN: 0352809

5331-01-596-8735 (97K-12)

NIIN: 01-596-8735
In stock
NSN: 5331-01-596-8735
FSC Code: 5331
MPN: 97K12

5331-01-597-6318 (19KP192)

NIIN: 01-597-6318
In stock
NSN: 5331-01-597-6318
FSC Code: 5331
MPN: 19KP192

5331-01-597-3904 (57474000)

NIIN: 01-597-3904
In stock
NSN: 5331-01-597-3904
FSC Code: 5331
MPN: 57474000

5331-01-597-3507 (57380000)

NIIN: 01-597-3507
In stock
NSN: 5331-01-597-3507
FSC Code: 5331
MPN: 57380000

5331-01-597-3208 (5233T54)

NIIN: 01-597-3208
In stock
NSN: 5331-01-597-3208
FSC Code: 5331
MPN: 5233T54

5331-01-597-2282 (P528283)

NIIN: 01-597-2282
In stock
NSN: 5331-01-597-2282
FSC Code: 5331
MPN: P528283

5331-01-596-8727 (7-57-225)

NIIN: 01-596-8727
In stock
NSN: 5331-01-596-8727
FSC Code: 5331
MPN: 757225

5331-01-597-7255 (0805247-156)

NIIN: 01-597-7255
In stock
NSN: 5331-01-597-7255
FSC Code: 5331
MPN: 0805247156