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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.

5331-01-350-4371 (H71686-8)

NIIN: 01-350-4371
In stock
NSN: 5331-01-350-4371
FSC Code: 5331
MPN: H716868

5331-01-370-5723 (H71179-1-7)

NIIN: 01-370-5723
In stock
NSN: 5331-01-370-5723
FSC Code: 5331
MPN: H7117917

5331-01-461-2687 (SK193D039)

NIIN: 01-461-2687
In stock
NSN: 5331-01-461-2687
FSC Code: 5331
MPN: SK193D039

5331-01-359-6707 (H-6281-M)

NIIN: 01-359-6707
In stock
NSN: 5331-01-359-6707
FSC Code: 5331
MPN: H6281M

5331-01-359-6708 (H-6223-M)

NIIN: 01-359-6708
In stock
NSN: 5331-01-359-6708
FSC Code: 5331
MPN: H6223M

5331-01-502-8453 (H50279M)

NIIN: 01-502-8453
In stock
NSN: 5331-01-502-8453
FSC Code: 5331
MPN: H50279M

5331-01-502-8429 (H50080M)

NIIN: 01-502-8429
In stock
NSN: 5331-01-502-8429
FSC Code: 5331
MPN: H50080M

5331-01-502-8446 (H50088M)

NIIN: 01-502-8446
In stock
NSN: 5331-01-502-8446
FSC Code: 5331
MPN: H50088M

5331-01-415-9668 (H-4E0008-50MMPC23)

NIIN: 01-415-9668
In stock
NSN: 5331-01-415-9668
FSC Code: 5331
MPN: H4E000850MMPC23

5331-01-415-9663 (H-4E0008-40MMPC23)

NIIN: 01-415-9663
In stock
NSN: 5331-01-415-9663
FSC Code: 5331
MPN: H4E000840MMPC23

5331-01-415-9659 (H-4E0008-40MMPC8)

NIIN: 01-415-9659
In stock
NSN: 5331-01-415-9659
FSC Code: 5331
MPN: H4E000840MMPC8

5331-01-415-9661 (H-4E0008-50MMPC8)

NIIN: 01-415-9661
In stock
NSN: 5331-01-415-9661
FSC Code: 5331
MPN: H4E000850MMPC8

5331-01-371-5081 (H72046-8-1)

NIIN: 01-371-5081
In stock
NSN: 5331-01-371-5081
FSC Code: 5331
MPN: H7204681

5331-01-371-5080 (H72046-5-1)

NIIN: 01-371-5080
In stock
NSN: 5331-01-371-5080
FSC Code: 5331
MPN: H7204651

5331-01-390-2901 (H47857-A01)

NIIN: 01-390-2901
In stock
NSN: 5331-01-390-2901
FSC Code: 5331
MPN: H47857A01

5331-01-496-3618 (H47667-2-1658-F03)

NIIN: 01-496-3618
In stock
NSN: 5331-01-496-3618
FSC Code: 5331
MPN: H4766721658F03

5331-01-350-4373 (H71686-8-1)

NIIN: 01-350-4373
In stock
NSN: 5331-01-350-4373
FSC Code: 5331
MPN: H7168681

5331-01-450-4826 (MIL-R-83248/2)

NIIN: 01-450-4826
In stock
NSN: 5331-01-450-4826
FSC Code: 5331
MPN: MILR832482

5331-01-482-3039 (H45112-3-2596-F03)

NIIN: 01-482-3039
In stock
NSN: 5331-01-482-3039
FSC Code: 5331
MPN: H4511232596F03

5331-01-390-2905 (H45112-3-2452-F)

NIIN: 01-390-2905
In stock
NSN: 5331-01-390-2905
FSC Code: 5331
MPN: H4511232452F

5331-01-453-1198 (H45112-3-2462-F03)

NIIN: 01-453-1198
In stock
NSN: 5331-01-453-1198
FSC Code: 5331
MPN: H4511232462F03

5331-01-342-3535 (H-45112-3-1017)

NIIN: 01-342-3535
In stock
NSN: 5331-01-342-3535
FSC Code: 5331
MPN: H4511231017

5331-01-362-9875 (H-45112-2-21260)

NIIN: 01-362-9875
In stock
NSN: 5331-01-362-9875
FSC Code: 5331
MPN: H45112221260

5331-01-453-1184 (H45112-1-3585-F03)

NIIN: 01-453-1184
In stock
NSN: 5331-01-453-1184
FSC Code: 5331
MPN: H4511213585F03

5331-01-359-8779 (H-2149-M)

NIIN: 01-359-8779
In stock
NSN: 5331-01-359-8779
FSC Code: 5331
MPN: H2149M

5331-01-571-8461 (H181114)

NIIN: 01-571-8461
In stock
NSN: 5331-01-571-8461
FSC Code: 5331
MPN: H181114

5331-01-553-5969 (H173015)

NIIN: 01-553-5969
In stock
NSN: 5331-01-553-5969
FSC Code: 5331
MPN: H173015

5331-01-553-7956 (H173014)

NIIN: 01-553-7956
In stock
NSN: 5331-01-553-7956
FSC Code: 5331
MPN: H173014

5331-01-567-7489 (H151890)

NIIN: 01-567-7489
In stock
NSN: 5331-01-567-7489
FSC Code: 5331
MPN: H151890

5331-01-567-4860 (H151891)

NIIN: 01-567-4860
In stock
NSN: 5331-01-567-4860
FSC Code: 5331
MPN: H151891

5331-01-341-2137 (H134-99)

NIIN: 01-341-2137
In stock
NSN: 5331-01-341-2137
FSC Code: 5331
MPN: H13499

5331-01-411-2391 (H-10338-M)

NIIN: 01-411-2391
In stock
NSN: 5331-01-411-2391
FSC Code: 5331
MPN: H10338M

5331-01-370-7607 (H0-617-33-0001)

NIIN: 01-370-7607
In stock
NSN: 5331-01-370-7607
FSC Code: 5331
MPN: H0617330001

5331-01-497-5216 (H04510700)

NIIN: 01-497-5216
In stock
NSN: 5331-01-497-5216
FSC Code: 5331
MPN: H04510700

5331-01-550-6296 (H0695)

NIIN: 01-550-6296
In stock
NSN: 5331-01-550-6296
FSC Code: 5331
MPN: H0695

5331-01-497-5213 (H045106-00)

NIIN: 01-497-5213
In stock
NSN: 5331-01-497-5213
FSC Code: 5331
MPN: H04510600

5331-01-538-2370 (H0442SKH)

NIIN: 01-538-2370
In stock
NSN: 5331-01-538-2370
FSC Code: 5331
MPN: H0442SKH

5331-01-569-9602 (H02120115)

NIIN: 01-569-9602
In stock
NSN: 5331-01-569-9602
FSC Code: 5331
MPN: H02120115

5331-01-388-9021 (H01.067007)

NIIN: 01-388-9021
In stock
NSN: 5331-01-388-9021
FSC Code: 5331
MPN: H01067007

5331-01-353-3478 (H00622)

NIIN: 01-353-3478
In stock
NSN: 5331-01-353-3478
FSC Code: 5331
MPN: H00622

5331-01-564-9915 (GX5099800)

NIIN: 01-564-9915
In stock
NSN: 5331-01-564-9915
FSC Code: 5331
MPN: GX5099800

5331-01-545-3080 (GX5099800)

NIIN: 01-545-3080
In stock
NSN: 5331-01-545-3080
FSC Code: 5331
MPN: GX5099800

5331-01-419-8324 (GX5100400)

NIIN: 01-419-8324
In stock
NSN: 5331-01-419-8324
FSC Code: 5331
MPN: GX5100400

5331-01-419-8327 (GX5098300)

NIIN: 01-419-8327
In stock
NSN: 5331-01-419-8327
FSC Code: 5331
MPN: GX5098300

5331-01-528-1457 (GX5099300)

NIIN: 01-528-1457
In stock
NSN: 5331-01-528-1457
FSC Code: 5331
MPN: GX5099300

5331-01-505-9499 (GW9896)

NIIN: 01-505-9499
In stock
NSN: 5331-01-505-9499
FSC Code: 5331
MPN: GW9896

5331-01-544-8225 (GW1074)

NIIN: 01-544-8225
In stock
NSN: 5331-01-544-8225
FSC Code: 5331
MPN: GW1074

5331-01-545-2247 (GW1075)

NIIN: 01-545-2247
In stock
NSN: 5331-01-545-2247
FSC Code: 5331
MPN: GW1075