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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.

5331-01-388-8997 (45Z91D103)

NIIN: 01-388-8997
In stock
NSN: 5331-01-388-8997
FSC Code: 5331
MPN: 45Z91D103

5331-01-365-5837 (45Z479D2)

NIIN: 01-365-5837
In stock
NSN: 5331-01-365-5837
FSC Code: 5331
MPN: 45Z479D2

5331-00-628-4447 (898920-1PC32)

NIIN: 00-628-4447
In stock
NSN: 5331-00-628-4447
FSC Code: 5331
MPN: 8989201PC32

5331-01-457-4023 (LO-014574023)

NIIN: 01-457-4023
In stock
NSN: 5331-01-457-4023
FSC Code: 5331
MPN: LO014574023

5331-01-312-2432 (8987-12)

NIIN: 01-312-2432
In stock
NSN: 5331-01-312-2432
FSC Code: 5331
MPN: 898712

5331-01-569-3424 (45C3317-232)

NIIN: 01-569-3424
In stock
NSN: 5331-01-569-3424
FSC Code: 5331
MPN: 45C3317232

5331-01-384-9889 (45C3317-228)

NIIN: 01-384-9889
In stock
NSN: 5331-01-384-9889
FSC Code: 5331
MPN: 45C3317228

5331-00-959-1681 (897428R1)

NIIN: 00-959-1681
In stock
NSN: 5331-00-959-1681
FSC Code: 5331
MPN: 897428R1

5331-01-411-2390 (45A221-P11)

NIIN: 01-411-2390
In stock
NSN: 5331-01-411-2390
FSC Code: 5331
MPN: 45A221P11

5331-01-411-2387 (45A221-P49)

NIIN: 01-411-2387
In stock
NSN: 5331-01-411-2387
FSC Code: 5331
MPN: 45A221P49

5331-01-411-2388 (45A221-P21)

NIIN: 01-411-2388
In stock
NSN: 5331-01-411-2388
FSC Code: 5331
MPN: 45A221P21

5331-01-411-2393 (45A221-P7)

NIIN: 01-411-2393
In stock
NSN: 5331-01-411-2393
FSC Code: 5331
MPN: 45A221P7

5331-01-529-3226 (LL-H58-3698)

NIIN: 01-529-3226
In stock
NSN: 5331-01-529-3226
FSC Code: 5331
MPN: LLH583698

5331-01-529-3216 (LL-H58-3692)

NIIN: 01-529-3216
In stock
NSN: 5331-01-529-3216
FSC Code: 5331
MPN: LLH583692

5331-01-529-3215 (LL-H58-3691)

NIIN: 01-529-3215
In stock
NSN: 5331-01-529-3215
FSC Code: 5331
MPN: LLH583691

5331-01-529-3218 (LL-H58-3693)

NIIN: 01-529-3218
In stock
NSN: 5331-01-529-3218
FSC Code: 5331
MPN: LLH583693

5331-01-365-9384 (459501-3)

NIIN: 01-365-9384
In stock
NSN: 5331-01-365-9384
FSC Code: 5331
MPN: 4595013

5331-12-187-9887 (CVR-700429078000)

NIIN: 12-187-9887
In stock
NSN: 5331-12-187-9887
FSC Code: 5331
MPN: CVR700429078000

5331-01-299-3140 (89-6552-001)

NIIN: 01-299-3140
In stock
NSN: 5331-01-299-3140
FSC Code: 5331
MPN: 896552001

5331-01-027-3114 (8-9478-226)

NIIN: 01-027-3114
In stock
NSN: 5331-01-027-3114
FSC Code: 5331
MPN: 89478226

5331-01-227-1345 (894667C1)

NIIN: 01-227-1345
In stock
NSN: 5331-01-227-1345
FSC Code: 5331
MPN: 894667C1

5331-00-060-2700 (894-31)

NIIN: 00-060-2700
In stock
NSN: 5331-00-060-2700
FSC Code: 5331
MPN: 89431

5331-01-246-8452 (894-01)

NIIN: 01-246-8452
In stock
NSN: 5331-01-246-8452
FSC Code: 5331
MPN: 89401

5331-00-618-3345 (8932800-1)

NIIN: 00-618-3345
In stock
NSN: 5331-00-618-3345
FSC Code: 5331
MPN: 89328001

5331-01-078-5121 (89305-244)

NIIN: 01-078-5121
In stock
NSN: 5331-01-078-5121
FSC Code: 5331
MPN: 89305244

5331-01-122-2064 (89306-12)

NIIN: 01-122-2064
In stock
NSN: 5331-01-122-2064
FSC Code: 5331
MPN: 8930612

5331-00-849-2280 (89306-16)

NIIN: 00-849-2280
In stock
NSN: 5331-00-849-2280
FSC Code: 5331
MPN: 8930616

5331-01-124-1116 (89305-016)

NIIN: 01-124-1116
In stock
NSN: 5331-01-124-1116
FSC Code: 5331
MPN: 89305016

5331-01-535-4736 (457-98-1)

NIIN: 01-535-4736
In stock
NSN: 5331-01-535-4736
FSC Code: 5331
MPN: 457981

5331-00-849-2281 (89305-012)

NIIN: 00-849-2281
In stock
NSN: 5331-00-849-2281
FSC Code: 5331
MPN: 89305012

5331-00-812-6191 (892-44)

NIIN: 00-812-6191
In stock
NSN: 5331-00-812-6191
FSC Code: 5331
MPN: 89244

5331-01-311-3797 (8922118-11)

NIIN: 01-311-3797
In stock
NSN: 5331-01-311-3797
FSC Code: 5331
MPN: 892211811

5331-01-311-3799 (8922118-15)

NIIN: 01-311-3799
In stock
NSN: 5331-01-311-3799
FSC Code: 5331
MPN: 892211815

5331-01-311-3798 (8922118-13)

NIIN: 01-311-3798
In stock
NSN: 5331-01-311-3798
FSC Code: 5331
MPN: 892211813

5331-01-311-3800 (8922118-17)

NIIN: 01-311-3800
In stock
NSN: 5331-01-311-3800
FSC Code: 5331
MPN: 892211817

5331-01-311-3795 (8922118-05)

NIIN: 01-311-3795
In stock
NSN: 5331-01-311-3795
FSC Code: 5331
MPN: 892211805

5331-01-311-3796 (8922118-07)

NIIN: 01-311-3796
In stock
NSN: 5331-01-311-3796
FSC Code: 5331
MPN: 892211807

5331-01-309-5803 (8922118-01)

NIIN: 01-309-5803
In stock
NSN: 5331-01-309-5803
FSC Code: 5331
MPN: 892211801

5331-01-309-5804 (8922118-03)

NIIN: 01-309-5804
In stock
NSN: 5331-01-309-5804
FSC Code: 5331
MPN: 892211803

5331-00-683-9622 (8919488-9)

NIIN: 00-683-9622
In stock
NSN: 5331-00-683-9622
FSC Code: 5331
MPN: 89194889

5331-00-684-2713 (8919488-10)

NIIN: 00-684-2713
In stock
NSN: 5331-00-684-2713
FSC Code: 5331
MPN: 891948810

5331-01-541-0297 (ML12544565G1)

NIIN: 01-541-0297
In stock
NSN: 5331-01-541-0297
FSC Code: 5331
MPN: ML12544565G1

5331-00-716-7312 (89126-122)

NIIN: 00-716-7312
In stock
NSN: 5331-00-716-7312
FSC Code: 5331
MPN: 89126122

5331-01-207-7596 (89126-275)

NIIN: 01-207-7596
In stock
NSN: 5331-01-207-7596
FSC Code: 5331
MPN: 89126275

5331-00-146-7333 (89105-10)

NIIN: 00-146-7333
In stock
NSN: 5331-00-146-7333
FSC Code: 5331
MPN: 8910510

5331-00-404-6286 (89101-8)

NIIN: 00-404-6286
In stock
NSN: 5331-00-404-6286
FSC Code: 5331
MPN: 891018

5331-01-398-2365 (4564-014-EU)

NIIN: 01-398-2365
In stock
NSN: 5331-01-398-2365
FSC Code: 5331
MPN: 4564014EU

5331-01-190-2005 (89101-08)

NIIN: 01-190-2005
In stock
NSN: 5331-01-190-2005
FSC Code: 5331
MPN: 8910108