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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.

5331-01-359-4322 (AW180-122)

NIIN: 01-359-4322
In stock
NSN: 5331-01-359-4322
FSC Code: 5331
MPN: AW180122

5331-01-454-4365 (A180-216)

NIIN: 01-454-4365
In stock
NSN: 5331-01-454-4365
FSC Code: 5331
MPN: A180216

5331-01-492-3394 (A-1633-38)

NIIN: 01-492-3394
In stock
NSN: 5331-01-492-3394
FSC Code: 5331
MPN: A163338

5331-01-500-0924 (A1633-82)

NIIN: 01-500-0924
In stock
NSN: 5331-01-500-0924
FSC Code: 5331
MPN: A163382

5331-01-500-0918 (A1633-76)

NIIN: 01-500-0918
In stock
NSN: 5331-01-500-0918
FSC Code: 5331
MPN: A163376

5331-01-500-0921 (A1633-55)

NIIN: 01-500-0921
In stock
NSN: 5331-01-500-0921
FSC Code: 5331
MPN: A163355

5331-01-549-8952 (A-1633-63)

NIIN: 01-549-8952
In stock
NSN: 5331-01-549-8952
FSC Code: 5331
MPN: A163363

5331-01-500-0917 (A1633-56)

NIIN: 01-500-0917
In stock
NSN: 5331-01-500-0917
FSC Code: 5331
MPN: A163356

5331-01-500-0916 (A1633-119)

NIIN: 01-500-0916
In stock
NSN: 5331-01-500-0916
FSC Code: 5331
MPN: A1633119

5331-01-429-6578 (C-3150669-B)

NIIN: 01-429-6578
In stock
NSN: 5331-01-429-6578
FSC Code: 5331
MPN: C3150669B

5331-01-440-7267 (A12034B5)

NIIN: 01-440-7267
In stock
NSN: 5331-01-440-7267
FSC Code: 5331
MPN: A12034B5

5331-01-550-2866 (M83248/2-108)

NIIN: 01-550-2866
In stock
NSN: 5331-01-550-2866
FSC Code: 5331
MPN: M832482108

5331-17-109-1895 (A108049/7087934-14)

NIIN: 17-109-1895
In stock
NSN: 5331-17-109-1895
FSC Code: 5331
MPN: A108049708793414

5331-01-367-6591 (A-10709)

NIIN: 01-367-6591
In stock
NSN: 5331-01-367-6591
FSC Code: 5331
MPN: A10709

5331-01-453-9522 (AI-S-308)

NIIN: 01-453-9522
In stock
NSN: 5331-01-453-9522
FSC Code: 5331
MPN: AIS308

5331-01-453-9519 (AI-S-410)

NIIN: 01-453-9519
In stock
NSN: 5331-01-453-9519
FSC Code: 5331
MPN: AIS410

5331-01-438-2359 (A1.101.33-43)

NIIN: 01-438-2359
In stock
NSN: 5331-01-438-2359
FSC Code: 5331
MPN: A11013343

5331-01-438-2357 (A1.101.33-26)

NIIN: 01-438-2357
In stock
NSN: 5331-01-438-2357
FSC Code: 5331
MPN: A11013326

5331-01-438-2361 (A1.101.33-30)

NIIN: 01-438-2361
In stock
NSN: 5331-01-438-2361
FSC Code: 5331
MPN: A11013330

5331-01-438-2360 (A1.101.33-29)

NIIN: 01-438-2360
In stock
NSN: 5331-01-438-2360
FSC Code: 5331
MPN: A11013329

5331-01-438-2358 (A1.101.33-28)

NIIN: 01-438-2358
In stock
NSN: 5331-01-438-2358
FSC Code: 5331
MPN: A11013328

5331-01-438-2355 (A1.101.33-21)

NIIN: 01-438-2355
In stock
NSN: 5331-01-438-2355
FSC Code: 5331
MPN: A11013321

5331-01-438-2356 (A1.101.33-25)

NIIN: 01-438-2356
In stock
NSN: 5331-01-438-2356
FSC Code: 5331
MPN: A11013325

5331-01-422-2209 (A0811-01)

NIIN: 01-422-2209
In stock
NSN: 5331-01-422-2209
FSC Code: 5331
MPN: A081101

5331-01-433-1750 (A090900)

NIIN: 01-433-1750
In stock
NSN: 5331-01-433-1750
FSC Code: 5331
MPN: A090900

5331-01-422-5849 (A0831-01)

NIIN: 01-422-5849
In stock
NSN: 5331-01-422-5849
FSC Code: 5331
MPN: A083101

5331-01-420-3681 (A0710-00)

NIIN: 01-420-3681
In stock
NSN: 5331-01-420-3681
FSC Code: 5331
MPN: A071000

5331-01-420-8760 (A0699-00)

NIIN: 01-420-8760
In stock
NSN: 5331-01-420-8760
FSC Code: 5331
MPN: A069900

5331-01-377-9761 (A06689.237.142)

NIIN: 01-377-9761
In stock
NSN: 5331-01-377-9761
FSC Code: 5331
MPN: A06689237142

5331-01-420-3539 (A0699-00)

NIIN: 01-420-3539
In stock
NSN: 5331-01-420-3539
FSC Code: 5331
MPN: A069900

5331-01-421-8374 (A0681-00)

NIIN: 01-421-8374
In stock
NSN: 5331-01-421-8374
FSC Code: 5331
MPN: A068100

5331-01-381-0853 (A06689.233.366)

NIIN: 01-381-0853
In stock
NSN: 5331-01-381-0853
FSC Code: 5331
MPN: A06689233366

5331-01-397-4280 (A06689.224.169)

NIIN: 01-397-4280
In stock
NSN: 5331-01-397-4280
FSC Code: 5331
MPN: A06689224169

5331-01-388-8577 (A06689.246.142)

NIIN: 01-388-8577
In stock
NSN: 5331-01-388-8577
FSC Code: 5331
MPN: A06689246142

5331-01-438-1597 (A06689.902.142CP)

NIIN: 01-438-1597
In stock
NSN: 5331-01-438-1597
FSC Code: 5331
MPN: A06689902142CP

5331-01-389-0053 (A06689.264.142)

NIIN: 01-389-0053
In stock
NSN: 5331-01-389-0053
FSC Code: 5331
MPN: A06689264142

5331-01-392-9514 (A06689.023.169)

NIIN: 01-392-9514
In stock
NSN: 5331-01-392-9514
FSC Code: 5331
MPN: A06689023169

5331-01-416-6525 (A06689.244.169)

NIIN: 01-416-6525
In stock
NSN: 5331-01-416-6525
FSC Code: 5331
MPN: A06689244169

5331-01-452-4014 (A06689.233.142)

NIIN: 01-452-4014
In stock
NSN: 5331-01-452-4014
FSC Code: 5331
MPN: A06689233142

5331-01-434-1359 (A06689.114.366)

NIIN: 01-434-1359
In stock
NSN: 5331-01-434-1359
FSC Code: 5331
MPN: A06689114366

5331-01-379-0522 (A06689.032.142)

NIIN: 01-379-0522
In stock
NSN: 5331-01-379-0522
FSC Code: 5331
MPN: A06689032142

5331-01-452-4268 (A06689.019.303)

NIIN: 01-452-4268
In stock
NSN: 5331-01-452-4268
FSC Code: 5331
MPN: A06689019303

5331-01-432-1782 (A0479-00)

NIIN: 01-432-1782
In stock
NSN: 5331-01-432-1782
FSC Code: 5331
MPN: A047900

5331-01-390-4685 (RS000410-003-01)

NIIN: 01-390-4685
In stock
NSN: 5331-01-390-4685
FSC Code: 5331
MPN: RS00041000301

5331-01-435-4926 (A0424-00)

NIIN: 01-435-4926
In stock
NSN: 5331-01-435-4926
FSC Code: 5331
MPN: A042400

5331-01-420-4727 (A037744)

NIIN: 01-420-4727
In stock
NSN: 5331-01-420-4727
FSC Code: 5331
MPN: A037744

5331-01-345-2318 (A/B33-03)

NIIN: 01-345-2318
In stock
NSN: 5331-01-345-2318
FSC Code: 5331
MPN: AB3303

5331-01-527-5534 (A0362004-100)

NIIN: 01-527-5534
In stock
NSN: 5331-01-527-5534
FSC Code: 5331
MPN: A0362004100