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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.

5331-00-225-6152 (A272SR833A40)

NIIN: 00-225-6152
In stock
NSN: 5331-00-225-6152
FSC Code: 5331
MPN: A272SR833A40

5331-01-213-8221 (A271-59-414)

NIIN: 01-213-8221
In stock
NSN: 5331-01-213-8221
FSC Code: 5331
MPN: A27159414

5331-01-117-5871 (A27-213T)

NIIN: 01-117-5871
In stock
NSN: 5331-01-117-5871
FSC Code: 5331
MPN: A27213T

5331-01-177-8190 (A27-229)

NIIN: 01-177-8190
In stock
NSN: 5331-01-177-8190
FSC Code: 5331
MPN: A27229

5331-01-143-1701 (A-2712)

NIIN: 01-143-1701
In stock
NSN: 5331-01-143-1701
FSC Code: 5331
MPN: A2712

5331-01-530-9764 (54-00-0304DD0)

NIIN: 01-530-9764
In stock
NSN: 5331-01-530-9764
FSC Code: 5331
MPN: 54000304DD0

5331-01-530-9766 (54-00-0306DD0)

NIIN: 01-530-9766
In stock
NSN: 5331-01-530-9766
FSC Code: 5331
MPN: 54000306DD0

5331-01-195-9808 (A-2699-9)

NIIN: 01-195-9808
In stock
NSN: 5331-01-195-9808
FSC Code: 5331
MPN: A26999

5331-01-195-9807 (A-2699-27)

NIIN: 01-195-9807
In stock
NSN: 5331-01-195-9807
FSC Code: 5331
MPN: A269927

5331-01-271-8303 (A268496)

NIIN: 01-271-8303
In stock
NSN: 5331-01-271-8303
FSC Code: 5331
MPN: A268496

5331-01-012-5171 (A26-448EP)

NIIN: 01-012-5171
In stock
NSN: 5331-01-012-5171
FSC Code: 5331
MPN: A26448EP

5331-01-177-8206 (A26-261)

NIIN: 01-177-8206
In stock
NSN: 5331-01-177-8206
FSC Code: 5331
MPN: A26261

5331-01-234-2612 (A26-273VA)

NIIN: 01-234-2612
In stock
NSN: 5331-01-234-2612
FSC Code: 5331
MPN: A26273VA

5331-01-269-2773 (A26-273)

NIIN: 01-269-2773
In stock
NSN: 5331-01-269-2773
FSC Code: 5331
MPN: A26273

5331-01-177-8204 (A26-240)

NIIN: 01-177-8204
In stock
NSN: 5331-01-177-8204
FSC Code: 5331
MPN: A26240

5331-00-140-2237 (A26-240VA)

NIIN: 00-140-2237
In stock
NSN: 5331-00-140-2237
FSC Code: 5331
MPN: A26240VA

5331-01-191-8043 (A26-248)

NIIN: 01-191-8043
In stock
NSN: 5331-01-191-8043
FSC Code: 5331
MPN: A26248

5331-00-140-2236 (A26-237VA)

NIIN: 00-140-2236
In stock
NSN: 5331-00-140-2236
FSC Code: 5331
MPN: A26237VA

5331-01-177-8205 (A26-244)

NIIN: 01-177-8205
In stock
NSN: 5331-01-177-8205
FSC Code: 5331
MPN: A26244

5331-01-177-8203 (A26-236)

NIIN: 01-177-8203
In stock
NSN: 5331-01-177-8203
FSC Code: 5331
MPN: A26236

5331-01-177-8202 (A26-234)

NIIN: 01-177-8202
In stock
NSN: 5331-01-177-8202
FSC Code: 5331
MPN: A26234

5331-01-177-8200 (A26-229)

NIIN: 01-177-8200
In stock
NSN: 5331-01-177-8200
FSC Code: 5331
MPN: A26229

5331-01-177-8201 (A26-231)

NIIN: 01-177-8201
In stock
NSN: 5331-01-177-8201
FSC Code: 5331
MPN: A26231

5331-00-897-6342 (A26223)

NIIN: 00-897-6342
In stock
NSN: 5331-00-897-6342
FSC Code: 5331
MPN: A26223

5331-01-101-8071 (A26-223VA)

NIIN: 01-101-8071
In stock
NSN: 5331-01-101-8071
FSC Code: 5331
MPN: A26223VA

5331-00-133-3466 (A26-225VA)

NIIN: 00-133-3466
In stock
NSN: 5331-00-133-3466
FSC Code: 5331
MPN: A26225VA

5331-01-235-2065 (A26-222VA)

NIIN: 01-235-2065
In stock
NSN: 5331-01-235-2065
FSC Code: 5331
MPN: A26222VA

5331-00-982-8051 (A26-224EP)

NIIN: 00-982-8051
In stock
NSN: 5331-00-982-8051
FSC Code: 5331
MPN: A26224EP

5331-01-239-7109 (A26-230VA)

NIIN: 01-239-7109
In stock
NSN: 5331-01-239-7109
FSC Code: 5331
MPN: A26230VA

5331-00-140-2240 (A26-228VA)

NIIN: 00-140-2240
In stock
NSN: 5331-00-140-2240
FSC Code: 5331
MPN: A26228VA

5331-00-068-8177 (A26-223)

NIIN: 00-068-8177
In stock
NSN: 5331-00-068-8177
FSC Code: 5331
MPN: A26223

5331-01-177-8199 (A26-218)

NIIN: 01-177-8199
In stock
NSN: 5331-01-177-8199
FSC Code: 5331
MPN: A26218

5331-00-140-2239 (A26-216VA)

NIIN: 00-140-2239
In stock
NSN: 5331-00-140-2239
FSC Code: 5331
MPN: A26216VA

5331-01-012-5172 (A26-218EP)

NIIN: 01-012-5172
In stock
NSN: 5331-01-012-5172
FSC Code: 5331
MPN: A26218EP

5331-01-210-1527 (A26-216)

NIIN: 01-210-1527
In stock
NSN: 5331-01-210-1527
FSC Code: 5331
MPN: A26216

5331-01-260-5667 (A-261692)

NIIN: 01-260-5667
In stock
NSN: 5331-01-260-5667
FSC Code: 5331
MPN: A261692

5331-00-065-4817 (A26-136)

NIIN: 00-065-4817
In stock
NSN: 5331-00-065-4817
FSC Code: 5331
MPN: A26136

5331-01-177-8198 (A26-129)

NIIN: 01-177-8198
In stock
NSN: 5331-01-177-8198
FSC Code: 5331
MPN: A26129

5331-00-068-8176 (A26-116)

NIIN: 00-068-8176
In stock
NSN: 5331-00-068-8176
FSC Code: 5331
MPN: A26116

5331-01-025-6361 (A26-113)

NIIN: 01-025-6361
In stock
NSN: 5331-01-025-6361
FSC Code: 5331
MPN: A26113

5331-00-003-0672 (A26-111EP)

NIIN: 00-003-0672
In stock
NSN: 5331-00-003-0672
FSC Code: 5331
MPN: A26111EP

5331-01-101-8070 (A26-116VA)

NIIN: 01-101-8070
In stock
NSN: 5331-01-101-8070
FSC Code: 5331
MPN: A26116VA

5331-00-850-5398 (A26-110)

NIIN: 00-850-5398
In stock
NSN: 5331-00-850-5398
FSC Code: 5331
MPN: A26110

5331-01-138-4611 (A26103-001)

NIIN: 01-138-4611
In stock
NSN: 5331-01-138-4611
FSC Code: 5331
MPN: A26103001

5331-00-245-9555 (A26-033)

NIIN: 00-245-9555
In stock
NSN: 5331-00-245-9555
FSC Code: 5331
MPN: A26033

5331-01-101-8069 (A26-006VA)

NIIN: 01-101-8069
In stock
NSN: 5331-01-101-8069
FSC Code: 5331
MPN: A26006VA

5331-00-066-8663 (A26-014)

NIIN: 00-066-8663
In stock
NSN: 5331-00-066-8663
FSC Code: 5331
MPN: A26014

5331-00-463-7801 (A25A206-062-1)

NIIN: 00-463-7801
In stock
NSN: 5331-00-463-7801
FSC Code: 5331
MPN: A25A2060621