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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.

5331-01-137-8772 (5330-400-03-08)

NIIN: 01-137-8772
In stock
NSN: 5331-01-137-8772
FSC Code: 5331
MPN: 53304000308

5331-00-141-4234 (5330-228-3)

NIIN: 00-141-4234
In stock
NSN: 5331-00-141-4234
FSC Code: 5331
MPN: 53302283

5331-00-297-6445 (5330-231-32)

NIIN: 00-297-6445
In stock
NSN: 5331-00-297-6445
FSC Code: 5331
MPN: 533023132

5331-00-141-4228 (5330-228-12)

NIIN: 00-141-4228
In stock
NSN: 5331-00-141-4228
FSC Code: 5331
MPN: 533022812

5331-00-171-8620 (5330-228-22)

NIIN: 00-171-8620
In stock
NSN: 5331-00-171-8620
FSC Code: 5331
MPN: 533022822

5331-00-171-6077 (5330-228-16)

NIIN: 00-171-6077
In stock
NSN: 5331-00-171-6077
FSC Code: 5331
MPN: 533022816

5331-00-297-9946 (5330-227-6)

NIIN: 00-297-9946
In stock
NSN: 5331-00-297-9946
FSC Code: 5331
MPN: 53302276

5331-00-576-4501 (5330-225-2)

NIIN: 00-576-4501
In stock
NSN: 5331-00-576-4501
FSC Code: 5331
MPN: 53302252

5331-00-141-4230 (5330-228-13)

NIIN: 00-141-4230
In stock
NSN: 5331-00-141-4230
FSC Code: 5331
MPN: 533022813

5331-00-291-5605 (5330-223-13)

NIIN: 00-291-5605
In stock
NSN: 5331-00-291-5605
FSC Code: 5331
MPN: 533022313

5331-00-292-0766 (5330-227-3)

NIIN: 00-292-0766
In stock
NSN: 5331-00-292-0766
FSC Code: 5331
MPN: 53302273

5331-00-297-9959 (5330-227-31)

NIIN: 00-297-9959
In stock
NSN: 5331-00-297-9959
FSC Code: 5331
MPN: 533022731

5331-00-141-4238 (5330-228-1)

NIIN: 00-141-4238
In stock
NSN: 5331-00-141-4238
FSC Code: 5331
MPN: 53302281

5331-00-291-9198 (5330-227-15)

NIIN: 00-291-9198
In stock
NSN: 5331-00-291-9198
FSC Code: 5331
MPN: 533022715

5331-00-576-4503 (5330-225-1)

NIIN: 00-576-4503
In stock
NSN: 5331-00-576-4503
FSC Code: 5331
MPN: 53302251

5331-00-291-3834 (5330-223-12)

NIIN: 00-291-3834
In stock
NSN: 5331-00-291-3834
FSC Code: 5331
MPN: 533022312

5331-00-188-8141 (5330-217-14)

NIIN: 00-188-8141
In stock
NSN: 5331-00-188-8141
FSC Code: 5331
MPN: 533021714

5331-00-292-9901 (5330-217-47)

NIIN: 00-292-9901
In stock
NSN: 5331-00-292-9901
FSC Code: 5331
MPN: 533021747

5331-00-292-0639 (5330-221-30)

NIIN: 00-292-0639
In stock
NSN: 5331-00-292-0639
FSC Code: 5331
MPN: 533022130

5331-00-171-9981 (5330-221-10)

NIIN: 00-171-9981
In stock
NSN: 5331-00-171-9981
FSC Code: 5331
MPN: 533022110

5331-00-292-0606 (5330-219-24)

NIIN: 00-292-0606
In stock
NSN: 5331-00-292-0606
FSC Code: 5331
MPN: 533021924

5331-00-297-3611 (5330-221-21)

NIIN: 00-297-3611
In stock
NSN: 5331-00-297-3611
FSC Code: 5331
MPN: 533022121

5331-00-292-9902 (5330-217-4)

NIIN: 00-292-9902
In stock
NSN: 5331-00-292-9902
FSC Code: 5331
MPN: 53302174

5331-00-292-0605 (5330-212-11)

NIIN: 00-292-0605
In stock
NSN: 5331-00-292-0605
FSC Code: 5331
MPN: 533021211

5331-00-292-9912 (5330-217-35)

NIIN: 00-292-9912
In stock
NSN: 5331-00-292-9912
FSC Code: 5331
MPN: 533021735

5331-00-291-9222 (5330-211-4)

NIIN: 00-291-9222
In stock
NSN: 5331-00-291-9222
FSC Code: 5331
MPN: 53302114

5331-00-291-3841 (5330-212-2)

NIIN: 00-291-3841
In stock
NSN: 5331-00-291-3841
FSC Code: 5331
MPN: 53302122

5331-00-297-6516 (5330-115)

NIIN: 00-297-6516
In stock
NSN: 5331-00-297-6516
FSC Code: 5331
MPN: 5330115

5331-01-244-7584 (5330-210)

NIIN: 01-244-7584
In stock
NSN: 5331-01-244-7584
FSC Code: 5331
MPN: 5330210

5331-01-308-1043 (533001PAF1408)

NIIN: 01-308-1043
In stock
NSN: 5331-01-308-1043
FSC Code: 5331
MPN: 533001PAF1408

5331-01-267-1106 (5330-006-0017)

NIIN: 01-267-1106
In stock
NSN: 5331-01-267-1106
FSC Code: 5331
MPN: 53300060017

5331-00-145-2257 (5-329V747-75)

NIIN: 00-145-2257
In stock
NSN: 5331-00-145-2257
FSC Code: 5331
MPN: 5329V74775

5331-01-399-2001 (1B2455)

NIIN: 01-399-2001
In stock
NSN: 5331-01-399-2001
FSC Code: 5331
MPN: 1B2455

5331-01-090-2337 (5327-77)

NIIN: 01-090-2337
In stock
NSN: 5331-01-090-2337
FSC Code: 5331
MPN: 532777

5331-01-229-8074 (5327-32)

NIIN: 01-229-8074
In stock
NSN: 5331-01-229-8074
FSC Code: 5331
MPN: 532732

5331-01-091-6803 (5326-77)

NIIN: 01-091-6803
In stock
NSN: 5331-01-091-6803
FSC Code: 5331
MPN: 532677

5331-01-229-8073 (5326-32)

NIIN: 01-229-8073
In stock
NSN: 5331-01-229-8073
FSC Code: 5331
MPN: 532632

5331-01-205-0024 (5325-9A)

NIIN: 01-205-0024
In stock
NSN: 5331-01-205-0024
FSC Code: 5331
MPN: 53259A

5331-01-358-0976 (1AA-20-004)

NIIN: 01-358-0976
In stock
NSN: 5331-01-358-0976
FSC Code: 5331
MPN: 1AA20004

5331-01-010-9797 (5321PC)

NIIN: 01-010-9797
In stock
NSN: 5331-01-010-9797
FSC Code: 5331
MPN: 5321PC

5331-00-531-3418 (53-200C15)

NIIN: 00-531-3418
In stock
NSN: 5331-00-531-3418
FSC Code: 5331
MPN: 53200C15

5331-01-424-8862 (19XL353558CR)

NIIN: 01-424-8862
In stock
NSN: 5331-01-424-8862
FSC Code: 5331
MPN: 19XL353558CR

5331-00-781-9977 (531346-1)

NIIN: 00-781-9977
In stock
NSN: 5331-00-781-9977
FSC Code: 5331
MPN: 5313461

5331-00-790-8765 (531345-2)

NIIN: 00-790-8765
In stock
NSN: 5331-00-790-8765
FSC Code: 5331
MPN: 5313452

5331-01-172-4643 (5313=010-6)

NIIN: 01-172-4643
In stock
NSN: 5331-01-172-4643
FSC Code: 5331
MPN: 53130106

5331-01-145-3977 (5311428A20)

NIIN: 01-145-3977
In stock
NSN: 5331-01-145-3977
FSC Code: 5331
MPN: 5311428A20

5331-01-213-5412 (5-311554)

NIIN: 01-213-5412
In stock
NSN: 5331-01-213-5412
FSC Code: 5331
MPN: 5311554

5331-00-794-2754 (5311428-10)

NIIN: 00-794-2754
In stock
NSN: 5331-00-794-2754
FSC Code: 5331
MPN: 531142810