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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.

5331-01-220-7569 (HD8300-G)

NIIN: 01-220-7569
In stock
NSN: 5331-01-220-7569
FSC Code: 5331
MPN: HD8300G

5331-01-383-3236 (7828-001)

NIIN: 01-383-3236
In stock
NSN: 5331-01-383-3236
FSC Code: 5331
MPN: 7828001

5331-01-473-2210 (782442-001)

NIIN: 01-473-2210
In stock
NSN: 5331-01-473-2210
FSC Code: 5331
MPN: 782442001

5331-15-163-3100 (78225F02)

NIIN: 15-163-3100
In stock
NSN: 5331-15-163-3100
FSC Code: 5331
MPN: 78225F02

5331-01-521-7088 (MIL-DTL-25988/4)

NIIN: 01-521-7088
In stock
NSN: 5331-01-521-7088
FSC Code: 5331
MPN: MILDTL259884

5331-01-416-1422 (78172-028)

NIIN: 01-416-1422
In stock
NSN: 5331-01-416-1422
FSC Code: 5331
MPN: 78172028

5331-01-521-7084 (78172-019)

NIIN: 01-521-7084
In stock
NSN: 5331-01-521-7084
FSC Code: 5331
MPN: 78172019

5331-01-483-7823 (78146-152)

NIIN: 01-483-7823
In stock
NSN: 5331-01-483-7823
FSC Code: 5331
MPN: 78146152

5331-01-566-2912 (78134-YG0-003)

NIIN: 01-566-2912
In stock
NSN: 5331-01-566-2912
FSC Code: 5331
MPN: 78134YG0003

5331-01-502-3868 (78115-907)

NIIN: 01-502-3868
In stock
NSN: 5331-01-502-3868
FSC Code: 5331
MPN: 78115907

5331-01-483-7822 (78114-022)

NIIN: 01-483-7822
In stock
NSN: 5331-01-483-7822
FSC Code: 5331
MPN: 78114022

5331-00-599-3014 (HA1264E)

NIIN: 00-599-3014
In stock
NSN: 5331-00-599-3014
FSC Code: 5331
MPN: HA1264E

5331-00-192-0447 (HA00621)

NIIN: 00-192-0447
In stock
NSN: 5331-00-192-0447
FSC Code: 5331
MPN: HA00621

5331-00-192-0446 (HA00620)

NIIN: 00-192-0446
In stock
NSN: 5331-00-192-0446
FSC Code: 5331
MPN: HA00620

5331-01-033-2535 (HA00623)

NIIN: 01-033-2535
In stock
NSN: 5331-01-033-2535
FSC Code: 5331
MPN: HA00623

5331-01-358-6576 (7800-010)

NIIN: 01-358-6576
In stock
NSN: 5331-01-358-6576
FSC Code: 5331
MPN: 7800010

5331-00-812-3182 (H900864PC52)

NIIN: 00-812-3182
In stock
NSN: 5331-00-812-3182
FSC Code: 5331
MPN: H900864PC52

5331-01-538-1063 (78/86-1711316)

NIIN: 01-538-1063
In stock
NSN: 5331-01-538-1063
FSC Code: 5331
MPN: 78861711316

5331-01-437-9509 (77K119)

NIIN: 01-437-9509
In stock
NSN: 5331-01-437-9509
FSC Code: 5331
MPN: 77K119

5331-01-333-5210 (H88900)

NIIN: 01-333-5210
In stock
NSN: 5331-01-333-5210
FSC Code: 5331
MPN: H88900

5331-01-305-0668 (H802-6)

NIIN: 01-305-0668
In stock
NSN: 5331-01-305-0668
FSC Code: 5331
MPN: H8026

5331-01-174-2664 (H-802-6)

NIIN: 01-174-2664
In stock
NSN: 5331-01-174-2664
FSC Code: 5331
MPN: H8026

5331-01-193-9396 (H802-20)

NIIN: 01-193-9396
In stock
NSN: 5331-01-193-9396
FSC Code: 5331
MPN: H80220

5331-01-173-6615 (H800-20)

NIIN: 01-173-6615
In stock
NSN: 5331-01-173-6615
FSC Code: 5331
MPN: H80020

5331-01-133-9305 (H800-2)

NIIN: 01-133-9305
In stock
NSN: 5331-01-133-9305
FSC Code: 5331
MPN: H8002

5331-01-193-9397 (H800-6)

NIIN: 01-193-9397
In stock
NSN: 5331-01-193-9397
FSC Code: 5331
MPN: H8006

5331-01-194-6102 (H800-10)

NIIN: 01-194-6102
In stock
NSN: 5331-01-194-6102
FSC Code: 5331
MPN: H80010

5331-00-536-4291 (H80)

NIIN: 00-536-4291
In stock
NSN: 5331-00-536-4291
FSC Code: 5331
MPN: H80

5331-01-103-0958 (H-7670-M)

NIIN: 01-103-0958
In stock
NSN: 5331-01-103-0958
FSC Code: 5331
MPN: H7670M

5331-01-124-6391 (H-7442-M)

NIIN: 01-124-6391
In stock
NSN: 5331-01-124-6391
FSC Code: 5331
MPN: H7442M

5331-01-113-3597 (H743336)

NIIN: 01-113-3597
In stock
NSN: 5331-01-113-3597
FSC Code: 5331
MPN: H743336

5331-01-324-0439 (H-7012-M)

NIIN: 01-324-0439
In stock
NSN: 5331-01-324-0439
FSC Code: 5331
MPN: H7012M

5331-00-107-1995 (H7125M)

NIIN: 00-107-1995
In stock
NSN: 5331-00-107-1995
FSC Code: 5331
MPN: H7125M

5331-00-107-1994 (H6314M)

NIIN: 00-107-1994
In stock
NSN: 5331-00-107-1994
FSC Code: 5331
MPN: H6314M

5331-01-222-9110 (H599080008)

NIIN: 01-222-9110
In stock
NSN: 5331-01-222-9110
FSC Code: 5331
MPN: H599080008

5331-01-164-0902 (H-5607)

NIIN: 01-164-0902
In stock
NSN: 5331-01-164-0902
FSC Code: 5331
MPN: H5607

5331-01-319-4200 (H554AX001)

NIIN: 01-319-4200
In stock
NSN: 5331-01-319-4200
FSC Code: 5331
MPN: H554AX001

5331-00-115-3105 (H5602)

NIIN: 00-115-3105
In stock
NSN: 5331-00-115-3105
FSC Code: 5331
MPN: H5602

5331-01-164-0903 (H-5608)

NIIN: 01-164-0903
In stock
NSN: 5331-01-164-0903
FSC Code: 5331
MPN: H5608

5331-01-319-4201 (H554AX001)

NIIN: 01-319-4201
In stock
NSN: 5331-01-319-4201
FSC Code: 5331
MPN: H554AX001

5331-01-304-1771 (H-46491)

NIIN: 01-304-1771
In stock
NSN: 5331-01-304-1771
FSC Code: 5331
MPN: H46491

5331-01-301-9612 (H-46461)

NIIN: 01-301-9612
In stock
NSN: 5331-01-301-9612
FSC Code: 5331
MPN: H46461

5331-00-568-4335 (H4-59)

NIIN: 00-568-4335
In stock
NSN: 5331-00-568-4335
FSC Code: 5331
MPN: H459

5331-01-301-9611 (H-45112-3)

NIIN: 01-301-9611
In stock
NSN: 5331-01-301-9611
FSC Code: 5331
MPN: H451123

5331-01-254-2401 (H-45112-3-2035)

NIIN: 01-254-2401
In stock
NSN: 5331-01-254-2401
FSC Code: 5331
MPN: H4511232035

5331-01-282-7524 (H-45112-3-2462)

NIIN: 01-282-7524
In stock
NSN: 5331-01-282-7524
FSC Code: 5331
MPN: H4511232462

5331-01-269-3692 (H-45112-3-1872)

NIIN: 01-269-3692
In stock
NSN: 5331-01-269-3692
FSC Code: 5331
MPN: H4511231872

5331-01-301-7766 (H-45112-2-2463)

NIIN: 01-301-7766
In stock
NSN: 5331-01-301-7766
FSC Code: 5331
MPN: H4511222463