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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.

5331-01-375-4309 (633B1446)

NIIN: 01-375-4309
In stock
NSN: 5331-01-375-4309
FSC Code: 5331
MPN: 633B1446

5331-01-375-4304 (633B1148)

NIIN: 01-375-4304
In stock
NSN: 5331-01-375-4304
FSC Code: 5331
MPN: 633B1148

5331-01-375-4296 (633B1460)

NIIN: 01-375-4296
In stock
NSN: 5331-01-375-4296
FSC Code: 5331
MPN: 633B1460

5331-01-375-4299 (633B1237)

NIIN: 01-375-4299
In stock
NSN: 5331-01-375-4299
FSC Code: 5331
MPN: 633B1237

5331-01-461-8478 (633B1333)

NIIN: 01-461-8478
In stock
NSN: 5331-01-461-8478
FSC Code: 5331
MPN: 633B1333

5331-01-375-4300 (633B1335)

NIIN: 01-375-4300
In stock
NSN: 5331-01-375-4300
FSC Code: 5331
MPN: 633B1335

5331-01-375-4301 (633B1267)

NIIN: 01-375-4301
In stock
NSN: 5331-01-375-4301
FSC Code: 5331
MPN: 633B1267

5331-01-468-0544 (633B0241)

NIIN: 01-468-0544
In stock
NSN: 5331-01-468-0544
FSC Code: 5331
MPN: 633B0241

5331-01-283-3547 (C313016-46)

NIIN: 01-283-3547
In stock
NSN: 5331-01-283-3547
FSC Code: 5331
MPN: C31301646

5331-01-375-4302 (633B1402)

NIIN: 01-375-4302
In stock
NSN: 5331-01-375-4302
FSC Code: 5331
MPN: 633B1402

5331-01-524-4772 (633B1136)

NIIN: 01-524-4772
In stock
NSN: 5331-01-524-4772
FSC Code: 5331
MPN: 633B1136

5331-00-060-4684 (C312047-29)

NIIN: 00-060-4684
In stock
NSN: 5331-00-060-4684
FSC Code: 5331
MPN: C31204729

5331-01-524-4542 (633B0015)

NIIN: 01-524-4542
In stock
NSN: 5331-01-524-4542
FSC Code: 5331
MPN: 633B0015

5331-01-524-4555 (633B1004)

NIIN: 01-524-4555
In stock
NSN: 5331-01-524-4555
FSC Code: 5331
MPN: 633B1004

5331-01-375-4295 (633B1056)

NIIN: 01-375-4295
In stock
NSN: 5331-01-375-4295
FSC Code: 5331
MPN: 633B1056

5331-01-468-0546 (XSZUDG1135M)

NIIN: 01-468-0546
In stock
NSN: 5331-01-468-0546
FSC Code: 5331
MPN: XSZUDG1135M

5331-01-375-4303 (633B1030)

NIIN: 01-375-4303
In stock
NSN: 5331-01-375-4303
FSC Code: 5331
MPN: 633B1030

5331-00-910-6697 (C312047-25)

NIIN: 00-910-6697
In stock
NSN: 5331-00-910-6697
FSC Code: 5331
MPN: C31204725

5331-01-375-4298 (633B1005)

NIIN: 01-375-4298
In stock
NSN: 5331-01-375-4298
FSC Code: 5331
MPN: 633B1005

5331-01-524-4550 (633B0011)

NIIN: 01-524-4550
In stock
NSN: 5331-01-524-4550
FSC Code: 5331
MPN: 633B0011

5331-00-986-0737 (C3068E)

NIIN: 00-986-0737
In stock
NSN: 5331-00-986-0737
FSC Code: 5331
MPN: C3068E

5331-01-278-5034 (C2817-5802-01)

NIIN: 01-278-5034
In stock
NSN: 5331-01-278-5034
FSC Code: 5331
MPN: C2817580201

5331-01-511-9028 (6330121-2)

NIIN: 01-511-9028
In stock
NSN: 5331-01-511-9028
FSC Code: 5331
MPN: 63301212

5331-01-511-9026 (6330121-1)

NIIN: 01-511-9026
In stock
NSN: 5331-01-511-9026
FSC Code: 5331
MPN: 63301211

5331-01-135-9417 (C-2715)

NIIN: 01-135-9417
In stock
NSN: 5331-01-135-9417
FSC Code: 5331
MPN: C2715

5331-01-295-2949 (C2712)

NIIN: 01-295-2949
In stock
NSN: 5331-01-295-2949
FSC Code: 5331
MPN: C2712

5331-01-116-8876 (C-25-67202)

NIIN: 01-116-8876
In stock
NSN: 5331-01-116-8876
FSC Code: 5331
MPN: C2567202

5331-01-523-7777 (632104-00)

NIIN: 01-523-7777
In stock
NSN: 5331-01-523-7777
FSC Code: 5331
MPN: 63210400

5331-01-523-7778 (632112-00)

NIIN: 01-523-7778
In stock
NSN: 5331-01-523-7778
FSC Code: 5331
MPN: 63211200

5331-01-259-9308 (C-255-03)

NIIN: 01-259-9308
In stock
NSN: 5331-01-259-9308
FSC Code: 5331
MPN: C25503

5331-01-523-7806 (632006-15)

NIIN: 01-523-7806
In stock
NSN: 5331-01-523-7806
FSC Code: 5331
MPN: 63200615

5331-01-523-7807 (632006-17)

NIIN: 01-523-7807
In stock
NSN: 5331-01-523-7807
FSC Code: 5331
MPN: 63200617

5331-01-240-8820 (C-25-35480)

NIIN: 01-240-8820
In stock
NSN: 5331-01-240-8820
FSC Code: 5331
MPN: C2535480

5331-00-557-8313 (C25-35126)

NIIN: 00-557-8313
In stock
NSN: 5331-00-557-8313
FSC Code: 5331
MPN: C2535126

5331-01-235-2064 (C-25-33465)

NIIN: 01-235-2064
In stock
NSN: 5331-01-235-2064
FSC Code: 5331
MPN: C2533465

5331-01-122-0333 (C-25-23145)

NIIN: 01-122-0333
In stock
NSN: 5331-01-122-0333
FSC Code: 5331
MPN: C2523145

5331-01-228-4108 (C-25-20195)

NIIN: 01-228-4108
In stock
NSN: 5331-01-228-4108
FSC Code: 5331
MPN: C2520195

5331-01-286-0802 (C2-400)

NIIN: 01-286-0802
In stock
NSN: 5331-01-286-0802
FSC Code: 5331
MPN: C2400

5331-01-291-5082 (C2-400)

NIIN: 01-291-5082
In stock
NSN: 5331-01-291-5082
FSC Code: 5331
MPN: C2400

5331-01-383-3459 (631-103C-46)

NIIN: 01-383-3459
In stock
NSN: 5331-01-383-3459
FSC Code: 5331
MPN: 631103C46

5331-01-383-3342 (631-103C-41)

NIIN: 01-383-3342
In stock
NSN: 5331-01-383-3342
FSC Code: 5331
MPN: 631103C41

5331-01-383-3250 (631-103C-5)

NIIN: 01-383-3250
In stock
NSN: 5331-01-383-3250
FSC Code: 5331
MPN: 631103C5

5331-01-383-3213 (631-103C-3)

NIIN: 01-383-3213
In stock
NSN: 5331-01-383-3213
FSC Code: 5331
MPN: 631103C3

5331-01-383-3254 (631-103C-51)

NIIN: 01-383-3254
In stock
NSN: 5331-01-383-3254
FSC Code: 5331
MPN: 631103C51

5331-01-382-9844 (631-103C-34)

NIIN: 01-382-9844
In stock
NSN: 5331-01-382-9844
FSC Code: 5331
MPN: 631103C34

5331-01-276-8451 (C-2350-102-06)

NIIN: 01-276-8451
In stock
NSN: 5331-01-276-8451
FSC Code: 5331
MPN: C235010206

5331-01-383-3436 (631-103C-39)

NIIN: 01-383-3436
In stock
NSN: 5331-01-383-3436
FSC Code: 5331
MPN: 631103C39

5331-01-382-9887 (631-103C-29)

NIIN: 01-382-9887
In stock
NSN: 5331-01-382-9887
FSC Code: 5331
MPN: 631103C29