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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.

5331-01-378-2487 (2-347N552-90)

NIIN: 01-378-2487
In stock
NSN: 5331-01-378-2487
FSC Code: 5331
MPN: 2347N55290

5331-01-407-2320 (2-347E540-80)

NIIN: 01-407-2320
In stock
NSN: 5331-01-407-2320
FSC Code: 5331
MPN: 2347E54080

5331-01-497-7903 (2-345N674-70)

NIIN: 01-497-7903
In stock
NSN: 5331-01-497-7903
FSC Code: 5331
MPN: 2345N67470

5331-01-453-0989 (2-345N507-90)

NIIN: 01-453-0989
In stock
NSN: 5331-01-453-0989
FSC Code: 5331
MPN: 2345N50790

5331-01-521-1087 (2-345C0873-70)

NIIN: 01-521-1087
In stock
NSN: 5331-01-521-1087
FSC Code: 5331
MPN: 2345C087370

5331-00-825-1435 (608-515-1955183PC10)

NIIN: 00-825-1435
In stock
NSN: 5331-00-825-1435
FSC Code: 5331
MPN: 6085151955183PC10

5331-00-821-8846 (608-513-1955715PC2)

NIIN: 00-821-8846
In stock
NSN: 5331-00-821-8846
FSC Code: 5331
MPN: 6085131955715PC2

5331-00-752-8642 (608-501-1955450PC11)

NIIN: 00-752-8642
In stock
NSN: 5331-00-752-8642
FSC Code: 5331
MPN: 6085011955450PC11

5331-01-134-0134 (6083-2)

NIIN: 01-134-0134
In stock
NSN: 5331-01-134-0134
FSC Code: 5331
MPN: 60832

5331-00-931-5289 (608-400-2472651)

NIIN: 00-931-5289
In stock
NSN: 5331-00-931-5289
FSC Code: 5331
MPN: 6084002472651

5331-00-821-8673 (608-203-1956008REVGPC25)

NIIN: 00-821-8673
In stock
NSN: 5331-00-821-8673
FSC Code: 5331
MPN: 6082031956008REVGPC25

5331-01-437-8224 (8205763)

NIIN: 01-437-8224
In stock
NSN: 5331-01-437-8224
FSC Code: 5331
MPN: 8205763

5331-01-433-0199 (RF-BNHC-950-F-10E-1.1/16)

NIIN: 01-433-0199
In stock
NSN: 5331-01-433-0199
FSC Code: 5331
MPN: RFBNHC950F10E1116

5331-01-530-3542 (2-343N0507-90)

NIIN: 01-530-3542
In stock
NSN: 5331-01-530-3542
FSC Code: 5331
MPN: 2343N050790

5331-01-535-4160 (234-3108)

NIIN: 01-535-4160
In stock
NSN: 5331-01-535-4160
FSC Code: 5331
MPN: 2343108

5331-01-569-6097 (2-342-L1120-70)

NIIN: 01-569-6097
In stock
NSN: 5331-01-569-6097
FSC Code: 5331
MPN: 2342L112070

5331-14-476-2086 (23420D00A3W03Q6)

NIIN: 14-476-2086
In stock
NSN: 5331-14-476-2086
FSC Code: 5331
MPN: 23420D00A3W03Q6

5331-01-381-9994 (MIL-R-83248/2)

NIIN: 01-381-9994
In stock
NSN: 5331-01-381-9994
FSC Code: 5331
MPN: MILR832482

5331-01-435-5515 (23399PART2592-008-)

NIIN: 01-435-5515
In stock
NSN: 5331-01-435-5515
FSC Code: 5331
MPN: 23399PART2592008

5331-01-407-6216 (2-339(S-469-4))

NIIN: 01-407-6216
In stock
NSN: 5331-01-407-6216
FSC Code: 5331
MPN: 2339S4694

5331-00-585-3173 (607-22778)

NIIN: 00-585-3173
In stock
NSN: 5331-00-585-3173
FSC Code: 5331
MPN: 60722778

5331-00-585-3170 (607-20216)

NIIN: 00-585-3170
In stock
NSN: 5331-00-585-3170
FSC Code: 5331
MPN: 60720216

5331-01-437-8208 (8205760)

NIIN: 01-437-8208
In stock
NSN: 5331-01-437-8208
FSC Code: 5331
MPN: 8205760

5331-01-562-8203 (2336B091)

NIIN: 01-562-8203
In stock
NSN: 5331-01-562-8203
FSC Code: 5331
MPN: 2336B091

5331-01-566-2771 (2-335-V0709-90)

NIIN: 01-566-2771
In stock
NSN: 5331-01-566-2771
FSC Code: 5331
MPN: 2335V070990

5331-01-373-0218 (233695ITEM12)

NIIN: 01-373-0218
In stock
NSN: 5331-01-373-0218
FSC Code: 5331
MPN: 233695ITEM12

5331-01-430-5509 (2-335N103-70)

NIIN: 01-430-5509
In stock
NSN: 5331-01-430-5509
FSC Code: 5331
MPN: 2335N10370

5331-01-308-8208 (60710886-1)

NIIN: 01-308-8208
In stock
NSN: 5331-01-308-8208
FSC Code: 5331
MPN: 607108861

5331-01-411-0035 (2-334-S604-70)

NIIN: 01-411-0035
In stock
NSN: 5331-01-411-0035
FSC Code: 5331
MPN: 2334S60470

5331-01-485-9663 (2-334)

NIIN: 01-485-9663
In stock
NSN: 5331-01-485-9663
FSC Code: 5331
MPN: 2334

5331-01-437-8217 (2-333)

NIIN: 01-437-8217
In stock
NSN: 5331-01-437-8217
FSC Code: 5331
MPN: 2333

5331-01-418-9136 (2-332E0603-70)

NIIN: 01-418-9136
In stock
NSN: 5331-01-418-9136
FSC Code: 5331
MPN: 2332E060370

5331-01-394-7152 (333-11356)

NIIN: 01-394-7152
In stock
NSN: 5331-01-394-7152
FSC Code: 5331
MPN: 33311356

5331-01-398-2627 (2-331V835-75)

NIIN: 01-398-2627
In stock
NSN: 5331-01-398-2627
FSC Code: 5331
MPN: 2331V83575

5331-01-375-3140 (233188ITEM12)

NIIN: 01-375-3140
In stock
NSN: 5331-01-375-3140
FSC Code: 5331
MPN: 233188ITEM12

5331-01-375-7366 (233188ITEM13)

NIIN: 01-375-7366
In stock
NSN: 5331-01-375-7366
FSC Code: 5331
MPN: 233188ITEM13

5331-00-133-1971 (606922C1)

NIIN: 00-133-1971
In stock
NSN: 5331-00-133-1971
FSC Code: 5331
MPN: 606922C1

5331-01-469-6905 (2-330N674-70)

NIIN: 01-469-6905
In stock
NSN: 5331-01-469-6905
FSC Code: 5331
MPN: 2330N67470

5331-01-566-1738 (330-7507)

NIIN: 01-566-1738
In stock
NSN: 5331-01-566-1738
FSC Code: 5331
MPN: 3307507

5331-01-388-1021 (845-6800704-073)

NIIN: 01-388-1021
In stock
NSN: 5331-01-388-1021
FSC Code: 5331
MPN: 8456800704073

5331-01-385-0178 (2-3297-C)

NIIN: 01-385-0178
In stock
NSN: 5331-01-385-0178
FSC Code: 5331
MPN: 23297C

5331-01-486-1073 (2-328-N674-70)

NIIN: 01-486-1073
In stock
NSN: 5331-01-486-1073
FSC Code: 5331
MPN: 2328N67470

5331-01-555-5204 (2-328-N974-7)

NIIN: 01-555-5204
In stock
NSN: 5331-01-555-5204
FSC Code: 5331
MPN: 2328N9747

5331-01-252-7153 (60-651-0003-2)

NIIN: 01-252-7153
In stock
NSN: 5331-01-252-7153
FSC Code: 5331
MPN: 6065100032

5331-01-442-9897 (8205787)

NIIN: 01-442-9897
In stock
NSN: 5331-01-442-9897
FSC Code: 5331
MPN: 8205787

5331-01-506-4048 (2-326N525-60)

NIIN: 01-506-4048
In stock
NSN: 5331-01-506-4048
FSC Code: 5331
MPN: 2326N52560

5331-01-416-5302 (232-507)

NIIN: 01-416-5302
In stock
NSN: 5331-01-416-5302
FSC Code: 5331
MPN: 232507

5331-99-528-1238 (DM203451TEM33)

NIIN: 99-528-1238
In stock
NSN: 5331-99-528-1238
FSC Code: 5331
MPN: DM203451TEM33