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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.

5331-01-165-2307 (D2-548)

NIIN: 01-165-2307
In stock
NSN: 5331-01-165-2307
FSC Code: 5331
MPN: D2548

5331-01-138-5266 (D2-532)

NIIN: 01-138-5266
In stock
NSN: 5331-01-138-5266
FSC Code: 5331
MPN: D2532

5331-01-210-4790 (D2-504)

NIIN: 01-210-4790
In stock
NSN: 5331-01-210-4790
FSC Code: 5331
MPN: D2504

5331-01-214-9207 (D242-85)

NIIN: 01-214-9207
In stock
NSN: 5331-01-214-9207
FSC Code: 5331
MPN: D24285

5331-01-529-9354 (6914770-28ED)

NIIN: 01-529-9354
In stock
NSN: 5331-01-529-9354
FSC Code: 5331
MPN: 691477028ED

5331-01-352-4309 (691272C1)

NIIN: 01-352-4309
In stock
NSN: 5331-01-352-4309
FSC Code: 5331
MPN: 691272C1

5331-01-363-1787 (691262C1)

NIIN: 01-363-1787
In stock
NSN: 5331-01-363-1787
FSC Code: 5331
MPN: 691262C1

5331-01-366-3467 (6911663-965)

NIIN: 01-366-3467
In stock
NSN: 5331-01-366-3467
FSC Code: 5331
MPN: 6911663965

5331-01-493-7293 (691-10228-0)

NIIN: 01-493-7293
In stock
NSN: 5331-01-493-7293
FSC Code: 5331
MPN: 691102280

5331-01-343-1059 (691-10335-B)

NIIN: 01-343-1059
In stock
NSN: 5331-01-343-1059
FSC Code: 5331
MPN: 69110335B

5331-00-276-1943 (D21006)

NIIN: 00-276-1943
In stock
NSN: 5331-00-276-1943
FSC Code: 5331
MPN: D21006

5331-01-421-6106 (691-00222-0)

NIIN: 01-421-6106
In stock
NSN: 5331-01-421-6106
FSC Code: 5331
MPN: 691002220

5331-01-452-1142 (691-00216-0)

NIIN: 01-452-1142
In stock
NSN: 5331-01-452-1142
FSC Code: 5331
MPN: 691002160

5331-00-406-5271 (D21006)

NIIN: 00-406-5271
In stock
NSN: 5331-00-406-5271
FSC Code: 5331
MPN: D21006

5331-01-207-9145 (D-2043-00)

NIIN: 01-207-9145
In stock
NSN: 5331-01-207-9145
FSC Code: 5331
MPN: D204300

5331-01-418-0631 (691-00125)

NIIN: 01-418-0631
In stock
NSN: 5331-01-418-0631
FSC Code: 5331
MPN: 69100125

5331-01-124-1853 (D-2099-6)

NIIN: 01-124-1853
In stock
NSN: 5331-01-124-1853
FSC Code: 5331
MPN: D20996

5331-01-420-6090 (691-00220-0)

NIIN: 01-420-6090
In stock
NSN: 5331-01-420-6090
FSC Code: 5331
MPN: 691002200

5331-01-452-1136 (691-00026-0)

NIIN: 01-452-1136
In stock
NSN: 5331-01-452-1136
FSC Code: 5331
MPN: 691000260

5331-01-273-7269 (D-2099-25)

NIIN: 01-273-7269
In stock
NSN: 5331-01-273-7269
FSC Code: 5331
MPN: D209925

5331-01-446-2617 (691-00119)

NIIN: 01-446-2617
In stock
NSN: 5331-01-446-2617
FSC Code: 5331
MPN: 69100119

5331-01-505-2399 (691-00014)

NIIN: 01-505-2399
In stock
NSN: 5331-01-505-2399
FSC Code: 5331
MPN: 69100014

5331-01-446-2619 (691-00118)

NIIN: 01-446-2619
In stock
NSN: 5331-01-446-2619
FSC Code: 5331
MPN: 69100118

5331-01-420-6079 (691-00223)

NIIN: 01-420-6079
In stock
NSN: 5331-01-420-6079
FSC Code: 5331
MPN: 69100223

5331-01-424-0243 (691-00111-0)

NIIN: 01-424-0243
In stock
NSN: 5331-01-424-0243
FSC Code: 5331
MPN: 691001110

5331-01-422-5015 (691-00014-0)

NIIN: 01-422-5015
In stock
NSN: 5331-01-422-5015
FSC Code: 5331
MPN: 691000140

5331-01-452-1138 (691-000140-0)

NIIN: 01-452-1138
In stock
NSN: 5331-01-452-1138
FSC Code: 5331
MPN: 6910001400

5331-01-420-6088 (691-00007-0)

NIIN: 01-420-6088
In stock
NSN: 5331-01-420-6088
FSC Code: 5331
MPN: 691000070

5331-01-417-1078 (691-00019-0)

NIIN: 01-417-1078
In stock
NSN: 5331-01-417-1078
FSC Code: 5331
MPN: 691000190

5331-01-317-6275 (D-2053-57)

NIIN: 01-317-6275
In stock
NSN: 5331-01-317-6275
FSC Code: 5331
MPN: D205357

5331-01-424-3486 (691-00018-0)

NIIN: 01-424-3486
In stock
NSN: 5331-01-424-3486
FSC Code: 5331
MPN: 691000180

5331-01-207-9140 (D-2041-00)

NIIN: 01-207-9140
In stock
NSN: 5331-01-207-9140
FSC Code: 5331
MPN: D204100

5331-00-131-7163 (D20-34)

NIIN: 00-131-7163
In stock
NSN: 5331-00-131-7163
FSC Code: 5331
MPN: D2034

5331-01-154-0660 (D-19303)

NIIN: 01-154-0660
In stock
NSN: 5331-01-154-0660
FSC Code: 5331
MPN: D19303

5331-01-239-3295 (D-1946-00)

NIIN: 01-239-3295
In stock
NSN: 5331-01-239-3295
FSC Code: 5331
MPN: D194600

5331-01-159-1079 (D-1875)

NIIN: 01-159-1079
In stock
NSN: 5331-01-159-1079
FSC Code: 5331
MPN: D1875

5331-01-296-2659 (D-1784-00)

NIIN: 01-296-2659
In stock
NSN: 5331-01-296-2659
FSC Code: 5331
MPN: D178400

5331-01-137-6892 (D-17N-0-99-002)

NIIN: 01-137-6892
In stock
NSN: 5331-01-137-6892
FSC Code: 5331
MPN: D17N099002

5331-01-205-4253 (D178200)

NIIN: 01-205-4253
In stock
NSN: 5331-01-205-4253
FSC Code: 5331
MPN: D178200

5331-01-291-5083 (D17620-3)

NIIN: 01-291-5083
In stock
NSN: 5331-01-291-5083
FSC Code: 5331
MPN: D176203

5331-01-214-4858 (D-1626-251-9200)

NIIN: 01-214-4858
In stock
NSN: 5331-01-214-4858
FSC Code: 5331
MPN: D16262519200

5331-01-132-3266 (D15-739)

NIIN: 01-132-3266
In stock
NSN: 5331-01-132-3266
FSC Code: 5331
MPN: D15739

5331-01-149-9616 (D-1555-2)

NIIN: 01-149-9616
In stock
NSN: 5331-01-149-9616
FSC Code: 5331
MPN: D15552

5331-01-150-1504 (D-1555-3)

NIIN: 01-150-1504
In stock
NSN: 5331-01-150-1504
FSC Code: 5331
MPN: D15553

5331-01-154-5207 (D-1555-6)

NIIN: 01-154-5207
In stock
NSN: 5331-01-154-5207
FSC Code: 5331
MPN: D15556

5331-01-151-9949 (D-144415)

NIIN: 01-151-9949
In stock
NSN: 5331-01-151-9949
FSC Code: 5331
MPN: D144415

5331-01-046-0625 (D-144040PC16)

NIIN: 01-046-0625
In stock
NSN: 5331-01-046-0625
FSC Code: 5331
MPN: D144040PC16

5331-01-046-8010 (D-144045PC22)

NIIN: 01-046-8010
In stock
NSN: 5331-01-046-8010
FSC Code: 5331
MPN: D144045PC22