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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.

5331-01-078-0851 (A6689-023-222)

NIIN: 01-078-0851
In stock
NSN: 5331-01-078-0851
FSC Code: 5331
MPN: A6689023222

5331-01-231-0504 (A6689-023-183)

NIIN: 01-231-0504
In stock
NSN: 5331-01-231-0504
FSC Code: 5331
MPN: A6689023183

5331-00-102-6500 (A6689-017-142)

NIIN: 00-102-6500
In stock
NSN: 5331-00-102-6500
FSC Code: 5331
MPN: A6689017142

5331-00-147-6163 (A6689-013-142)

NIIN: 00-147-6163
In stock
NSN: 5331-00-147-6163
FSC Code: 5331
MPN: A6689013142

5331-00-161-9618 (A6689-012-142)

NIIN: 00-161-9618
In stock
NSN: 5331-00-161-9618
FSC Code: 5331
MPN: A6689012142

5331-00-425-2283 (A6689.902.212)

NIIN: 00-425-2283
In stock
NSN: 5331-00-425-2283
FSC Code: 5331
MPN: A6689902212

5331-01-178-1750 (A6689.905.269)

NIIN: 01-178-1750
In stock
NSN: 5331-01-178-1750
FSC Code: 5331
MPN: A6689905269

5331-01-308-5861 (A6689.113.303)

NIIN: 01-308-5861
In stock
NSN: 5331-01-308-5861
FSC Code: 5331
MPN: A6689113303

5331-01-266-2505 (A6689.902.366)

NIIN: 01-266-2505
In stock
NSN: 5331-01-266-2505
FSC Code: 5331
MPN: A6689902366

5331-01-211-1496 (A6689.244.303)

NIIN: 01-211-1496
In stock
NSN: 5331-01-211-1496
FSC Code: 5331
MPN: A6689244303

5331-01-323-4733 (A6689.244.144)

NIIN: 01-323-4733
In stock
NSN: 5331-01-323-4733
FSC Code: 5331
MPN: A6689244144

5331-01-029-2343 (A6689.902.212)

NIIN: 01-029-2343
In stock
NSN: 5331-01-029-2343
FSC Code: 5331
MPN: A6689902212

5331-01-305-6008 (A6689.908.300)

NIIN: 01-305-6008
In stock
NSN: 5331-01-305-6008
FSC Code: 5331
MPN: A6689908300

5331-01-266-2491 (A6689.904.336)

NIIN: 01-266-2491
In stock
NSN: 5331-01-266-2491
FSC Code: 5331
MPN: A6689904336

5331-01-291-6538 (A6689.147.142)

NIIN: 01-291-6538
In stock
NSN: 5331-01-291-6538
FSC Code: 5331
MPN: A6689147142

5331-01-284-4218 (A6689.210.144)

NIIN: 01-284-4218
In stock
NSN: 5331-01-284-4218
FSC Code: 5331
MPN: A6689210144

5331-01-266-7590 (A6689.214.269)

NIIN: 01-266-7590
In stock
NSN: 5331-01-266-7590
FSC Code: 5331
MPN: A6689214269

5331-01-299-8242 (A6689.244.14)

NIIN: 01-299-8242
In stock
NSN: 5331-01-299-8242
FSC Code: 5331
MPN: A668924414

5331-01-122-3231 (A6689.034.142)

NIIN: 01-122-3231
In stock
NSN: 5331-01-122-3231
FSC Code: 5331
MPN: A6689034142

5331-01-240-1658 (A6689.031.142)

NIIN: 01-240-1658
In stock
NSN: 5331-01-240-1658
FSC Code: 5331
MPN: A6689031142

5331-01-144-6175 (A6689.030.142)

NIIN: 01-144-6175
In stock
NSN: 5331-01-144-6175
FSC Code: 5331
MPN: A6689030142

5331-01-215-6749 (A6689.027.303)

NIIN: 01-215-6749
In stock
NSN: 5331-01-215-6749
FSC Code: 5331
MPN: A6689027303

5331-01-241-2726 (A6689.029.142)

NIIN: 01-241-2726
In stock
NSN: 5331-01-241-2726
FSC Code: 5331
MPN: A6689029142

5331-01-271-2531 (A6689.020.303)

NIIN: 01-271-2531
In stock
NSN: 5331-01-271-2531
FSC Code: 5331
MPN: A6689020303

5331-01-221-4206 (A6689.020.144)

NIIN: 01-221-4206
In stock
NSN: 5331-01-221-4206
FSC Code: 5331
MPN: A6689020144

5331-01-396-8387 (I11376-8SF56A)

NIIN: 01-396-8387
In stock
NSN: 5331-01-396-8387
FSC Code: 5331
MPN: I113768SF56A

5331-01-308-7363 (A-66-1-L)

NIIN: 01-308-7363
In stock
NSN: 5331-01-308-7363
FSC Code: 5331
MPN: A661L

5331-00-986-0230 (A662)

NIIN: 00-986-0230
In stock
NSN: 5331-00-986-0230
FSC Code: 5331
MPN: A662

5331-01-181-2436 (A-6601-M)

NIIN: 01-181-2436
In stock
NSN: 5331-01-181-2436
FSC Code: 5331
MPN: A6601M

5331-01-181-7392 (A-6601-L)

NIIN: 01-181-7392
In stock
NSN: 5331-01-181-7392
FSC Code: 5331
MPN: A6601L

5331-01-181-7391 (A-6601-K)

NIIN: 01-181-7391
In stock
NSN: 5331-01-181-7391
FSC Code: 5331
MPN: A6601K

5331-01-470-9047 (5719-0905)

NIIN: 01-470-9047
In stock
NSN: 5331-01-470-9047
FSC Code: 5331
MPN: 57190905

5331-01-077-4848 (A6515)

NIIN: 01-077-4848
In stock
NSN: 5331-01-077-4848
FSC Code: 5331
MPN: A6515

5331-01-473-1967 (5719-0216)

NIIN: 01-473-1967
In stock
NSN: 5331-01-473-1967
FSC Code: 5331
MPN: 57190216

5331-01-470-9044 (5719-0114)

NIIN: 01-470-9044
In stock
NSN: 5331-01-470-9044
FSC Code: 5331
MPN: 57190114

5331-01-470-9042 (5719-0155)

NIIN: 01-470-9042
In stock
NSN: 5331-01-470-9042
FSC Code: 5331
MPN: 57190155

5331-01-470-9043 (5719-0153)

NIIN: 01-470-9043
In stock
NSN: 5331-01-470-9043
FSC Code: 5331
MPN: 57190153

5331-01-257-4784 (A64436)

NIIN: 01-257-4784
In stock
NSN: 5331-01-257-4784
FSC Code: 5331
MPN: A64436

5331-00-878-0520 (A63097)

NIIN: 00-878-0520
In stock
NSN: 5331-00-878-0520
FSC Code: 5331
MPN: A63097

5331-01-378-7181 (5-710L998-70)

NIIN: 01-378-7181
In stock
NSN: 5331-01-378-7181
FSC Code: 5331
MPN: 5710L99870

5331-01-040-7851 (A-62844)

NIIN: 01-040-7851
In stock
NSN: 5331-01-040-7851
FSC Code: 5331
MPN: A62844

5331-01-254-8295 (A-6302-A)

NIIN: 01-254-8295
In stock
NSN: 5331-01-254-8295
FSC Code: 5331
MPN: A6302A

5331-01-316-7573 (A-62056)

NIIN: 01-316-7573
In stock
NSN: 5331-01-316-7573
FSC Code: 5331
MPN: A62056

5331-01-523-6445 (81487-001)

NIIN: 01-523-6445
In stock
NSN: 5331-01-523-6445
FSC Code: 5331
MPN: 81487001

5331-01-329-6910 (A618016)

NIIN: 01-329-6910
In stock
NSN: 5331-01-329-6910
FSC Code: 5331
MPN: A618016

5331-00-872-4530 (A60W1175K06)

NIIN: 00-872-4530
In stock
NSN: 5331-00-872-4530
FSC Code: 5331
MPN: A60W1175K06

5331-01-168-5519 (A60W1174B012-70)

NIIN: 01-168-5519
In stock
NSN: 5331-01-168-5519
FSC Code: 5331
MPN: A60W1174B01270

5331-01-315-8725 (A-60997)

NIIN: 01-315-8725
In stock
NSN: 5331-01-315-8725
FSC Code: 5331
MPN: A60997