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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.

5331-00-641-3802 (5066D78)

NIIN: 00-641-3802
In stock
NSN: 5331-00-641-3802
FSC Code: 5331
MPN: 5066D78

5331-00-291-7286 (5066D39)

NIIN: 00-291-7286
In stock
NSN: 5331-00-291-7286
FSC Code: 5331
MPN: 5066D39

5331-01-062-6412 (5066B)

NIIN: 01-062-6412
In stock
NSN: 5331-01-062-6412
FSC Code: 5331
MPN: 5066B

5331-00-291-7347 (5066D36)

NIIN: 00-291-7347
In stock
NSN: 5331-00-291-7347
FSC Code: 5331
MPN: 5066D36

5331-00-291-7348 (5066D35)

NIIN: 00-291-7348
In stock
NSN: 5331-00-291-7348
FSC Code: 5331
MPN: 5066D35

5331-00-599-2138 (5065D90)

NIIN: 00-599-2138
In stock
NSN: 5331-00-599-2138
FSC Code: 5331
MPN: 5065D90

5331-00-527-7488 (5065D44)

NIIN: 00-527-7488
In stock
NSN: 5331-00-527-7488
FSC Code: 5331
MPN: 5065D44

5331-01-047-9479 (5-065MIL-R-83248TY1CL1)

NIIN: 01-047-9479
In stock
NSN: 5331-01-047-9479
FSC Code: 5331
MPN: 5065MILR83248TY1CL1

5331-00-599-1585 (5065D43)

NIIN: 00-599-1585
In stock
NSN: 5331-00-599-1585
FSC Code: 5331
MPN: 5065D43

5331-00-527-8514 (5065D42)

NIIN: 00-527-8514
In stock
NSN: 5331-00-527-8514
FSC Code: 5331
MPN: 5065D42

5331-00-291-3288 (5065D22)

NIIN: 00-291-3288
In stock
NSN: 5331-00-291-3288
FSC Code: 5331
MPN: 5065D22

5331-00-526-5803 (5065D37)

NIIN: 00-526-5803
In stock
NSN: 5331-00-526-5803
FSC Code: 5331
MPN: 5065D37

5331-00-291-3286 (5065D25)

NIIN: 00-291-3286
In stock
NSN: 5331-00-291-3286
FSC Code: 5331
MPN: 5065D25

5331-00-290-9383 (5065D19)

NIIN: 00-290-9383
In stock
NSN: 5331-00-290-9383
FSC Code: 5331
MPN: 5065D19

5331-00-290-9382 (5065D20)

NIIN: 00-290-9382
In stock
NSN: 5331-00-290-9382
FSC Code: 5331
MPN: 5065D20

5331-01-075-2037 (50-65375-02)

NIIN: 01-075-2037
In stock
NSN: 5331-01-075-2037
FSC Code: 5331
MPN: 506537502

5331-01-164-0900 (50-65478-02)

NIIN: 01-164-0900
In stock
NSN: 5331-01-164-0900
FSC Code: 5331
MPN: 506547802

5331-01-075-2039 (50-65403-02)

NIIN: 01-075-2039
In stock
NSN: 5331-01-075-2039
FSC Code: 5331
MPN: 506540302

5331-01-214-7712 (50-65395-02)

NIIN: 01-214-7712
In stock
NSN: 5331-01-214-7712
FSC Code: 5331
MPN: 506539502

5331-00-942-1820 (506552-1)

NIIN: 00-942-1820
In stock
NSN: 5331-00-942-1820
FSC Code: 5331
MPN: 5065521

5331-01-075-4948 (50-65404-02)

NIIN: 01-075-4948
In stock
NSN: 5331-01-075-4948
FSC Code: 5331
MPN: 506540402

5331-01-075-2038 (50-65374-02)

NIIN: 01-075-2038
In stock
NSN: 5331-01-075-2038
FSC Code: 5331
MPN: 506537402

5331-00-943-7742 (506502-1)

NIIN: 00-943-7742
In stock
NSN: 5331-00-943-7742
FSC Code: 5331
MPN: 5065021

5331-01-556-4643 (1807323C1)

NIIN: 01-556-4643
In stock
NSN: 5331-01-556-4643
FSC Code: 5331
MPN: 1807323C1

5331-01-239-0651 (50-65374-03)

NIIN: 01-239-0651
In stock
NSN: 5331-01-239-0651
FSC Code: 5331
MPN: 506537403

5331-01-142-4434 (50-64494-02)

NIIN: 01-142-4434
In stock
NSN: 5331-01-142-4434
FSC Code: 5331
MPN: 506449402

5331-01-141-1857 (50-64285-02)

NIIN: 01-141-1857
In stock
NSN: 5331-01-141-1857
FSC Code: 5331
MPN: 506428502

5331-01-363-1786 (1806290C1)

NIIN: 01-363-1786
In stock
NSN: 5331-01-363-1786
FSC Code: 5331
MPN: 1806290C1

5331-01-363-1785 (1806299C1)

NIIN: 01-363-1785
In stock
NSN: 5331-01-363-1785
FSC Code: 5331
MPN: 1806299C1

5331-00-243-4787 (5-063N287-7)

NIIN: 00-243-4787
In stock
NSN: 5331-00-243-4787
FSC Code: 5331
MPN: 5063N2877

5331-01-275-5947 (50632-002)

NIIN: 01-275-5947
In stock
NSN: 5331-01-275-5947
FSC Code: 5331
MPN: 50632002

5331-00-126-5203 (5062Q)

NIIN: 00-126-5203
In stock
NSN: 5331-00-126-5203
FSC Code: 5331
MPN: 5062Q

5331-00-126-5202 (5062H)

NIIN: 00-126-5202
In stock
NSN: 5331-00-126-5202
FSC Code: 5331
MPN: 5062H

5331-01-226-1830 (50622-H)

NIIN: 01-226-1830
In stock
NSN: 5331-01-226-1830
FSC Code: 5331
MPN: 50622H

5331-01-359-4548 (1803190C1)

NIIN: 01-359-4548
In stock
NSN: 5331-01-359-4548
FSC Code: 5331
MPN: 1803190C1

5331-01-456-1721 (180-312-006-384)

NIIN: 01-456-1721
In stock
NSN: 5331-01-456-1721
FSC Code: 5331
MPN: 180312006384

5331-01-554-7329 (180-2923)

NIIN: 01-554-7329
In stock
NSN: 5331-01-554-7329
FSC Code: 5331
MPN: 1802923

5331-00-291-3281 (5060D6)

NIIN: 00-291-3281
In stock
NSN: 5331-00-291-3281
FSC Code: 5331
MPN: 5060D6

5331-01-439-9826 (N-999-6037-A-003)

NIIN: 01-439-9826
In stock
NSN: 5331-01-439-9826
FSC Code: 5331
MPN: N9996037A003

5331-01-503-0157 (180-250-005C367)

NIIN: 01-503-0157
In stock
NSN: 5331-01-503-0157
FSC Code: 5331
MPN: 180250005C367

5331-01-028-4450 (505X84)

NIIN: 01-028-4450
In stock
NSN: 5331-01-028-4450
FSC Code: 5331
MPN: 505X84

5331-00-126-5312 (5059Y)

NIIN: 00-126-5312
In stock
NSN: 5331-00-126-5312
FSC Code: 5331
MPN: 5059Y

5331-00-126-5310 (5059T)

NIIN: 00-126-5310
In stock
NSN: 5331-00-126-5310
FSC Code: 5331
MPN: 5059T

5331-01-247-2469 (5059C)

NIIN: 01-247-2469
In stock
NSN: 5331-01-247-2469
FSC Code: 5331
MPN: 5059C

5331-00-126-5306 (5059A)

NIIN: 00-126-5306
In stock
NSN: 5331-00-126-5306
FSC Code: 5331
MPN: 5059A

5331-01-237-5245 (5-058-N602)

NIIN: 01-237-5245
In stock
NSN: 5331-01-237-5245
FSC Code: 5331
MPN: 5058N602

5331-01-097-8958 (5-057-V835-75)

NIIN: 01-097-8958
In stock
NSN: 5331-01-097-8958
FSC Code: 5331
MPN: 5057V83575

5331-00-869-9828 (5-057N304-7)

NIIN: 00-869-9828
In stock
NSN: 5331-00-869-9828
FSC Code: 5331
MPN: 5057N3047