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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.

5331-01-420-6088 (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

5331-01-278-1730 (D14000-3)

NIIN: 01-278-1730
In stock
NSN: 5331-01-278-1730
FSC Code: 5331
MPN: D140003

5331-01-283-7485 (D14000-126)

NIIN: 01-283-7485
In stock
NSN: 5331-01-283-7485
FSC Code: 5331
MPN: D14000126

5331-01-264-0156 (D-1221-E)

NIIN: 01-264-0156
In stock
NSN: 5331-01-264-0156
FSC Code: 5331
MPN: D1221E

5331-01-274-6008 (D-1221-E)

NIIN: 01-274-6008
In stock
NSN: 5331-01-274-6008
FSC Code: 5331
MPN: D1221E

5331-01-298-8056 (D-1221-4'-10)

NIIN: 01-298-8056
In stock
NSN: 5331-01-298-8056
FSC Code: 5331
MPN: D1221410

5331-00-765-2679 (D1173N)

NIIN: 00-765-2679
In stock
NSN: 5331-00-765-2679
FSC Code: 5331
MPN: D1173N

5331-01-146-9922 (D-1136-33)

NIIN: 01-146-9922
In stock
NSN: 5331-01-146-9922
FSC Code: 5331
MPN: D113633

5331-01-299-3141 (D-1136-3)

NIIN: 01-299-3141
In stock
NSN: 5331-01-299-3141
FSC Code: 5331
MPN: D11363

5331-01-174-3476 (D-1105-24)

NIIN: 01-174-3476
In stock
NSN: 5331-01-174-3476
FSC Code: 5331
MPN: D110524

5331-01-299-3144 (D-1105-5)

NIIN: 01-299-3144
In stock
NSN: 5331-01-299-3144
FSC Code: 5331
MPN: D11055

5331-01-299-3143 (D-1105-6)

NIIN: 01-299-3143
In stock
NSN: 5331-01-299-3143
FSC Code: 5331
MPN: D11056

5331-00-470-5631 (D-1105-106)

NIIN: 00-470-5631
In stock
NSN: 5331-00-470-5631
FSC Code: 5331
MPN: D1105106

5331-01-299-3142 (D-1105-163)

NIIN: 01-299-3142
In stock
NSN: 5331-01-299-3142
FSC Code: 5331
MPN: D1105163

5331-01-297-2769 (D106825)

NIIN: 01-297-2769
In stock
NSN: 5331-01-297-2769
FSC Code: 5331
MPN: D106825

5331-01-020-6927 (D106374)

NIIN: 01-020-6927
In stock
NSN: 5331-01-020-6927
FSC Code: 5331
MPN: D106374

5331-01-203-2568 (D1046)

NIIN: 01-203-2568
In stock
NSN: 5331-01-203-2568
FSC Code: 5331
MPN: D1046

5331-01-203-2569 (D1047)

NIIN: 01-203-2569
In stock
NSN: 5331-01-203-2569
FSC Code: 5331
MPN: D1047

5331-01-203-0733 (D1035)

NIIN: 01-203-0733
In stock
NSN: 5331-01-203-0733
FSC Code: 5331
MPN: D1035

5331-01-203-0732 (D1034)

NIIN: 01-203-0732
In stock
NSN: 5331-01-203-0732
FSC Code: 5331
MPN: D1034

5331-01-305-6010 (D-102-E-3.00-15)

NIIN: 01-305-6010
In stock
NSN: 5331-01-305-6010
FSC Code: 5331
MPN: D102E30015

5331-00-419-3344 (D102-0699-000-408J)

NIIN: 00-419-3344
In stock
NSN: 5331-00-419-3344
FSC Code: 5331
MPN: D1020699000408J

5331-01-312-6967 (D100752110)

NIIN: 01-312-6967
In stock
NSN: 5331-01-312-6967
FSC Code: 5331
MPN: D100752110

5331-01-312-6966 (D100742110)

NIIN: 01-312-6966
In stock
NSN: 5331-01-312-6966
FSC Code: 5331
MPN: D100742110

5331-00-250-6075 (D10002)

NIIN: 00-250-6075
In stock
NSN: 5331-00-250-6075
FSC Code: 5331
MPN: D10002

5331-00-111-7542 (D080SA44069PC4)

NIIN: 00-111-7542
In stock
NSN: 5331-00-111-7542
FSC Code: 5331
MPN: D080SA44069PC4

5331-01-170-8668 (D030-OR)

NIIN: 01-170-8668
In stock
NSN: 5331-01-170-8668
FSC Code: 5331
MPN: D030OR

5331-01-163-5596 (D-02N-0-99-019PC18)

NIIN: 01-163-5596
In stock
NSN: 5331-01-163-5596
FSC Code: 5331
MPN: D02N099019PC18