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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.

5331-01-197-9438 (MS-28775-246)

NIIN: 01-197-9438
In stock
NSN: 5331-01-197-9438
FSC Code: 5331
MPN: MS28775246

5331-01-179-4429 (MS28775-215)

NIIN: 01-179-4429
In stock
NSN: 5331-01-179-4429
FSC Code: 5331
MPN: MS28775215

5331-01-192-6391 (MS28775-202)

NIIN: 01-192-6391
In stock
NSN: 5331-01-192-6391
FSC Code: 5331
MPN: MS28775202

5331-01-185-8701 (MS28775-229)

NIIN: 01-185-8701
In stock
NSN: 5331-01-185-8701
FSC Code: 5331
MPN: MS28775229

5331-01-072-9191 (MS28775-226)

NIIN: 01-072-9191
In stock
NSN: 5331-01-072-9191
FSC Code: 5331
MPN: MS28775226

5331-01-145-7447 (MS28775-171)

NIIN: 01-145-7447
In stock
NSN: 5331-01-145-7447
FSC Code: 5331
MPN: MS28775171

5331-01-188-9652 (MS28775-205)

NIIN: 01-188-9652
In stock
NSN: 5331-01-188-9652
FSC Code: 5331
MPN: MS28775205

5331-01-145-1839 (MS28775-215)

NIIN: 01-145-1839
In stock
NSN: 5331-01-145-1839
FSC Code: 5331
MPN: MS28775215

5331-00-291-3842 (MS28775-202)

NIIN: 00-291-3842
In stock
NSN: 5331-00-291-3842
FSC Code: 5331
MPN: MS28775202

5331-01-069-8237 (MS28775-202)

NIIN: 01-069-8237
In stock
NSN: 5331-01-069-8237
FSC Code: 5331
MPN: MS28775202

5331-01-152-4959 (MS28775-168)

NIIN: 01-152-4959
In stock
NSN: 5331-01-152-4959
FSC Code: 5331
MPN: MS28775168

5331-00-420-7591 (MS28775-152)

NIIN: 00-420-7591
In stock
NSN: 5331-00-420-7591
FSC Code: 5331
MPN: MS28775152

5331-01-149-7380 (MS28775-112)

NIIN: 01-149-7380
In stock
NSN: 5331-01-149-7380
FSC Code: 5331
MPN: MS28775112

5331-01-205-5038 (MS28775-107)

NIIN: 01-205-5038
In stock
NSN: 5331-01-205-5038
FSC Code: 5331
MPN: MS28775107

5331-00-722-4973 (MS28775-110)

NIIN: 00-722-4973
In stock
NSN: 5331-00-722-4973
FSC Code: 5331
MPN: MS28775110

5331-01-210-1680 (MS28775-028)

NIIN: 01-210-1680
In stock
NSN: 5331-01-210-1680
FSC Code: 5331
MPN: MS28775028

5331-01-168-9787 (MS28775-050)

NIIN: 01-168-9787
In stock
NSN: 5331-01-168-9787
FSC Code: 5331
MPN: MS28775050

5331-01-220-5499 (MS28775-020)

NIIN: 01-220-5499
In stock
NSN: 5331-01-220-5499
FSC Code: 5331
MPN: MS28775020

5331-01-160-2090 (MS28775-037)

NIIN: 01-160-2090
In stock
NSN: 5331-01-160-2090
FSC Code: 5331
MPN: MS28775037

5331-01-072-9195 (MS28775-009)

NIIN: 01-072-9195
In stock
NSN: 5331-01-072-9195
FSC Code: 5331
MPN: MS28775009

5331-01-160-2067 (MS28775-026)

NIIN: 01-160-2067
In stock
NSN: 5331-01-160-2067
FSC Code: 5331
MPN: MS28775026

5331-01-193-0178 (MS28775-005)

NIIN: 01-193-0178
In stock
NSN: 5331-01-193-0178
FSC Code: 5331
MPN: MS28775005

5331-01-389-2551 (A5-4010V)

NIIN: 01-389-2551
In stock
NSN: 5331-01-389-2551
FSC Code: 5331
MPN: A54010V

5331-00-079-7381 (MS24690-015ES)

NIIN: 00-079-7381
In stock
NSN: 5331-00-079-7381
FSC Code: 5331
MPN: MS24690015ES

5331-01-425-6924 (A52097)

NIIN: 01-425-6924
In stock
NSN: 5331-01-425-6924
FSC Code: 5331
MPN: A52097

5331-00-442-3233 (MS17413-263)

NIIN: 00-442-3233
In stock
NSN: 5331-00-442-3233
FSC Code: 5331
MPN: MS17413263

5331-00-411-4441 (MS17413-226)

NIIN: 00-411-4441
In stock
NSN: 5331-00-411-4441
FSC Code: 5331
MPN: MS17413226

5331-01-105-7057 (MRS7045)

NIIN: 01-105-7057
In stock
NSN: 5331-01-105-7057
FSC Code: 5331
MPN: MRS7045

5331-01-288-8988 (MPO-0543)

NIIN: 01-288-8988
In stock
NSN: 5331-01-288-8988
FSC Code: 5331
MPN: MPO0543

5331-01-115-8730 (MPL-BHS-1000-1)

NIIN: 01-115-8730
In stock
NSN: 5331-01-115-8730
FSC Code: 5331
MPN: MPLBHS10001

5331-01-392-5779 (A-504)

NIIN: 01-392-5779
In stock
NSN: 5331-01-392-5779
FSC Code: 5331
MPN: A504

5331-01-348-8334 (A49366MRF)

NIIN: 01-348-8334
In stock
NSN: 5331-01-348-8334
FSC Code: 5331
MPN: A49366MRF

5331-01-066-3485 (MPA33026)

NIIN: 01-066-3485
In stock
NSN: 5331-01-066-3485
FSC Code: 5331
MPN: MPA33026

5331-01-137-9594 (MP-20-9)

NIIN: 01-137-9594
In stock
NSN: 5331-01-137-9594
FSC Code: 5331
MPN: MP209

5331-01-438-0330 (F37040325)

NIIN: 01-438-0330
In stock
NSN: 5331-01-438-0330
FSC Code: 5331
MPN: F37040325

5331-01-165-2305 (MP-16-9)

NIIN: 01-165-2305
In stock
NSN: 5331-01-165-2305
FSC Code: 5331
MPN: MP169

5331-01-532-7691 (A-4400-610)

NIIN: 01-532-7691
In stock
NSN: 5331-01-532-7691
FSC Code: 5331
MPN: A4400610

5331-01-365-3146 (A4150-1-024)

NIIN: 01-365-3146
In stock
NSN: 5331-01-365-3146
FSC Code: 5331
MPN: A41501024

5331-00-559-8565 (MMS115-46)

NIIN: 00-559-8565
In stock
NSN: 5331-00-559-8565
FSC Code: 5331
MPN: MMS11546

5331-01-399-1662 (A395X021)

NIIN: 01-399-1662
In stock
NSN: 5331-01-399-1662
FSC Code: 5331
MPN: A395X021

5331-01-431-3338 (A37-3250-007-9549)

NIIN: 01-431-3338
In stock
NSN: 5331-01-431-3338
FSC Code: 5331
MPN: A3732500079549

5331-01-431-3317 (A37-3250-006-9549325)

NIIN: 01-431-3317
In stock
NSN: 5331-01-431-3317
FSC Code: 5331
MPN: A3732500069549325

5331-01-440-5228 (A37-3250-010-9549)

NIIN: 01-440-5228
In stock
NSN: 5331-01-440-5228
FSC Code: 5331
MPN: A3732500109549

5331-01-440-5230 (A37-2500-013-9549)

NIIN: 01-440-5230
In stock
NSN: 5331-01-440-5230
FSC Code: 5331
MPN: A3725000139549

5331-01-440-5232 (A37-2750-011-9549)

NIIN: 01-440-5232
In stock
NSN: 5331-01-440-5232
FSC Code: 5331
MPN: A3727500119549

5331-01-440-5236 (A37-2750-010-9549)

NIIN: 01-440-5236
In stock
NSN: 5331-01-440-5236
FSC Code: 5331
MPN: A3727500109549

5331-01-571-9547 (A3606R)

NIIN: 01-571-9547
In stock
NSN: 5331-01-571-9547
FSC Code: 5331
MPN: A3606R

5331-01-364-0234 (A356A355-101)

NIIN: 01-364-0234
In stock
NSN: 5331-01-364-0234
FSC Code: 5331
MPN: A356A355101