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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.

5331-00-110-2339 (31-300-20354-1)

NIIN: 00-110-2339
In stock
NSN: 5331-00-110-2339
FSC Code: 5331
MPN: 31300203541

5331-00-110-2340 (31-300-20354-2)

NIIN: 00-110-2340
In stock
NSN: 5331-00-110-2340
FSC Code: 5331
MPN: 31300203542

5331-00-072-8352 (3-12S418-6)

NIIN: 00-072-8352
In stock
NSN: 5331-00-072-8352
FSC Code: 5331
MPN: 312S4186

5331-00-870-2656 (3-12V495-7)

NIIN: 00-870-2656
In stock
NSN: 5331-00-870-2656
FSC Code: 5331
MPN: 312V4957

5331-00-199-1640 (3-12N183-9)

NIIN: 00-199-1640
In stock
NSN: 5331-00-199-1640
FSC Code: 5331
MPN: 312N1839

5331-00-935-9203 (3-12E515-8)

NIIN: 00-935-9203
In stock
NSN: 5331-00-935-9203
FSC Code: 5331
MPN: 312E5158

5331-01-025-7790 (3-12C147-70)

NIIN: 01-025-7790
In stock
NSN: 5331-01-025-7790
FSC Code: 5331
MPN: 312C14770

5331-01-550-4384 (104166-210)

NIIN: 01-550-4384
In stock
NSN: 5331-01-550-4384
FSC Code: 5331
MPN: 104166210

5331-01-550-4386 (104166-015)

NIIN: 01-550-4386
In stock
NSN: 5331-01-550-4386
FSC Code: 5331
MPN: 104166015

5331-01-570-8468 (104166-155)

NIIN: 01-570-8468
In stock
NSN: 5331-01-570-8468
FSC Code: 5331
MPN: 104166155

5331-01-550-2554 (104166-027)

NIIN: 01-550-2554
In stock
NSN: 5331-01-550-2554
FSC Code: 5331
MPN: 104166027

5331-01-424-0679 (104166-131)

NIIN: 01-424-0679
In stock
NSN: 5331-01-424-0679
FSC Code: 5331
MPN: 104166131

5331-01-550-2560 (104166-028)

NIIN: 01-550-2560
In stock
NSN: 5331-01-550-2560
FSC Code: 5331
MPN: 104166028

5331-01-550-2614 (104166-224)

NIIN: 01-550-2614
In stock
NSN: 5331-01-550-2614
FSC Code: 5331
MPN: 104166224

5331-01-123-2360 (31-2900436)

NIIN: 01-123-2360
In stock
NSN: 5331-01-123-2360
FSC Code: 5331
MPN: 312900436

5331-01-342-2542 (104-13)

NIIN: 01-342-2542
In stock
NSN: 5331-01-342-2542
FSC Code: 5331
MPN: 10413

5331-00-291-9205 (3122963PC3)

NIIN: 00-291-9205
In stock
NSN: 5331-00-291-9205
FSC Code: 5331
MPN: 3122963PC3

5331-01-177-8207 (31-21796-67)

NIIN: 01-177-8207
In stock
NSN: 5331-01-177-8207
FSC Code: 5331
MPN: 312179667

5331-00-978-7915 (3-121-449-6)

NIIN: 00-978-7915
In stock
NSN: 5331-00-978-7915
FSC Code: 5331
MPN: 31214496

5331-01-432-9305 (104.5X3)

NIIN: 01-432-9305
In stock
NSN: 5331-01-432-9305
FSC Code: 5331
MPN: 1045X3

5331-01-304-9256 (3-1168)

NIIN: 01-304-9256
In stock
NSN: 5331-01-304-9256
FSC Code: 5331
MPN: 31168

5331-01-502-8197 (30-007C-B)

NIIN: 01-502-8197
In stock
NSN: 5331-01-502-8197
FSC Code: 5331
MPN: 30007CB

5331-01-514-3278 (103-9083)

NIIN: 01-514-3278
In stock
NSN: 5331-01-514-3278
FSC Code: 5331
MPN: 1039083

5331-01-104-9877 (3-11362-23)

NIIN: 01-104-9877
In stock
NSN: 5331-01-104-9877
FSC Code: 5331
MPN: 31136223

5331-01-439-0342 (10372-1206-01)

NIIN: 01-439-0342
In stock
NSN: 5331-01-439-0342
FSC Code: 5331
MPN: 10372120601

5331-00-301-7790 (31-10154)

NIIN: 00-301-7790
In stock
NSN: 5331-00-301-7790
FSC Code: 5331
MPN: 3110154

5331-01-028-5738 (3-10-S424-7)

NIIN: 01-028-5738
In stock
NSN: 5331-01-028-5738
FSC Code: 5331
MPN: 310S4247

5331-01-115-8223 (3-10N552-90)

NIIN: 01-115-8223
In stock
NSN: 5331-01-115-8223
FSC Code: 5331
MPN: 310N55290

5331-00-104-5214 (31082PC17)

NIIN: 00-104-5214
In stock
NSN: 5331-00-104-5214
FSC Code: 5331
MPN: 31082PC17

5331-01-168-5504 (3-1069G)

NIIN: 01-168-5504
In stock
NSN: 5331-01-168-5504
FSC Code: 5331
MPN: 31069G

5331-01-483-5603 (10343-054)

NIIN: 01-483-5603
In stock
NSN: 5331-01-483-5603
FSC Code: 5331
MPN: 10343054

5331-01-556-9693 (10343-000)

NIIN: 01-556-9693
In stock
NSN: 5331-01-556-9693
FSC Code: 5331
MPN: 10343000

5331-01-168-5505 (3-1014)

NIIN: 01-168-5505
In stock
NSN: 5331-01-168-5505
FSC Code: 5331
MPN: 31014

5331-01-088-7356 (31-01087-05)

NIIN: 01-088-7356
In stock
NSN: 5331-01-088-7356
FSC Code: 5331
MPN: 310108705

5331-00-612-3625 (310053002PC32)

NIIN: 00-612-3625
In stock
NSN: 5331-00-612-3625
FSC Code: 5331
MPN: 310053002PC32

5331-00-612-3623 (310053002PC31)

NIIN: 00-612-3623
In stock
NSN: 5331-00-612-3623
FSC Code: 5331
MPN: 310053002PC31

5331-01-067-6929 (31-001-029)

NIIN: 01-067-6929
In stock
NSN: 5331-01-067-6929
FSC Code: 5331
MPN: 31001029

5331-01-502-8196 (30-006C-B)

NIIN: 01-502-8196
In stock
NSN: 5331-01-502-8196
FSC Code: 5331
MPN: 30006CB

5331-00-404-3608 (30T72)

NIIN: 00-404-3608
In stock
NSN: 5331-00-404-3608
FSC Code: 5331
MPN: 30T72

5331-01-568-0043 (10-303)

NIIN: 01-568-0043
In stock
NSN: 5331-01-568-0043
FSC Code: 5331
MPN: 10303

5331-00-910-0987 (30FC12)

NIIN: 00-910-0987
In stock
NSN: 5331-00-910-0987
FSC Code: 5331
MPN: 30FC12

5331-00-910-0986 (30FC11)

NIIN: 00-910-0986
In stock
NSN: 5331-00-910-0986
FSC Code: 5331
MPN: 30FC11

5331-01-525-3750 (102A10001-28)

NIIN: 01-525-3750
In stock
NSN: 5331-01-525-3750
FSC Code: 5331
MPN: 102A1000128

5331-01-518-8307 (102A10001-02)

NIIN: 01-518-8307
In stock
NSN: 5331-01-518-8307
FSC Code: 5331
MPN: 102A1000102

5331-01-519-6311 (102A10001-61)

NIIN: 01-519-6311
In stock
NSN: 5331-01-519-6311
FSC Code: 5331
MPN: 102A1000161

5331-01-519-6312 (102A10001-62)

NIIN: 01-519-6312
In stock
NSN: 5331-01-519-6312
FSC Code: 5331
MPN: 102A1000162

5331-01-518-8317 (102A10001-27)

NIIN: 01-518-8317
In stock
NSN: 5331-01-518-8317
FSC Code: 5331
MPN: 102A1000127

5331-01-568-0044 (10-298)

NIIN: 01-568-0044
In stock
NSN: 5331-01-568-0044
FSC Code: 5331
MPN: 10298