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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.

5331-01-284-9363 (B-3806)

NIIN: 01-284-9363
In stock
NSN: 5331-01-284-9363
FSC Code: 5331
MPN: B3806

5331-01-294-1525 (B36K0019E212)

NIIN: 01-294-1525
In stock
NSN: 5331-01-294-1525
FSC Code: 5331
MPN: B36K0019E212

5331-01-328-4152 (B-37)

NIIN: 01-328-4152
In stock
NSN: 5331-01-328-4152
FSC Code: 5331
MPN: B37

5331-00-435-0182 (B356011042-1)

NIIN: 00-435-0182
In stock
NSN: 5331-00-435-0182
FSC Code: 5331
MPN: B3560110421

5331-01-071-3413 (B356011052-1)

NIIN: 01-071-3413
In stock
NSN: 5331-01-071-3413
FSC Code: 5331
MPN: B3560110521

5331-01-196-6561 (B356011042-2)

NIIN: 01-196-6561
In stock
NSN: 5331-01-196-6561
FSC Code: 5331
MPN: B3560110422

5331-01-152-0557 (B3-355-8-00-901-09)

NIIN: 01-152-0557
In stock
NSN: 5331-01-152-0557
FSC Code: 5331
MPN: B335580090109

5331-01-287-5729 (B33-666186)

NIIN: 01-287-5729
In stock
NSN: 5331-01-287-5729
FSC Code: 5331
MPN: B33666186

5331-00-298-6232 (B312047-100)

NIIN: 00-298-6232
In stock
NSN: 5331-00-298-6232
FSC Code: 5331
MPN: B312047100

5331-01-289-4362 (B-28328-12-11)

NIIN: 01-289-4362
In stock
NSN: 5331-01-289-4362
FSC Code: 5331
MPN: B283281211

5331-01-351-6356 (60701-00163-1039)

NIIN: 01-351-6356
In stock
NSN: 5331-01-351-6356
FSC Code: 5331
MPN: 60701001631039

5331-01-534-9072 (606X101)

NIIN: 01-534-9072
In stock
NSN: 5331-01-534-9072
FSC Code: 5331
MPN: 606X101

5331-01-552-6436 (606C107)

NIIN: 01-552-6436
In stock
NSN: 5331-01-552-6436
FSC Code: 5331
MPN: 606C107

5331-00-928-4220 (B25-32069)

NIIN: 00-928-4220
In stock
NSN: 5331-00-928-4220
FSC Code: 5331
MPN: B2532069

5331-00-403-1322 (B25520P60)

NIIN: 00-403-1322
In stock
NSN: 5331-00-403-1322
FSC Code: 5331
MPN: B25520P60

5331-00-928-4221 (B25-34128)

NIIN: 00-928-4221
In stock
NSN: 5331-00-928-4221
FSC Code: 5331
MPN: B2534128

5331-00-452-7621 (B249186-1)

NIIN: 00-452-7621
In stock
NSN: 5331-00-452-7621
FSC Code: 5331
MPN: B2491861

5331-01-571-7653 (606201-8)

NIIN: 01-571-7653
In stock
NSN: 5331-01-571-7653
FSC Code: 5331
MPN: 6062018

5331-01-571-7679 (606201-10)

NIIN: 01-571-7679
In stock
NSN: 5331-01-571-7679
FSC Code: 5331
MPN: 60620110

5331-01-277-9789 (B-234368-000)

NIIN: 01-277-9789
In stock
NSN: 5331-01-277-9789
FSC Code: 5331
MPN: B234368000

5331-01-570-7090 (60-6064-1)

NIIN: 01-570-7090
In stock
NSN: 5331-01-570-7090
FSC Code: 5331
MPN: 6060641

5331-22-269-1407 (60610-13H-0403)

NIIN: 22-269-1407
In stock
NSN: 5331-22-269-1407
FSC Code: 5331
MPN: 6061013H0403

5331-00-698-0411 (B23189)

NIIN: 00-698-0411
In stock
NSN: 5331-00-698-0411
FSC Code: 5331
MPN: B23189

5331-01-454-5551 (605P176U01)

NIIN: 01-454-5551
In stock
NSN: 5331-01-454-5551
FSC Code: 5331
MPN: 605P176U01

5331-01-129-8893 (B22546-10)

NIIN: 01-129-8893
In stock
NSN: 5331-01-129-8893
FSC Code: 5331
MPN: B2254610

5331-00-901-1201 (B2177PC110XY)

NIIN: 00-901-1201
In stock
NSN: 5331-00-901-1201
FSC Code: 5331
MPN: B2177PC110XY

5331-00-901-1200 (B2177PC10)

NIIN: 00-901-1200
In stock
NSN: 5331-00-901-1200
FSC Code: 5331
MPN: B2177PC10

5331-01-235-1648 (B21692-18-01-211)

NIIN: 01-235-1648
In stock
NSN: 5331-01-235-1648
FSC Code: 5331
MPN: B216921801211

5331-00-933-4328 (B2034-25)

NIIN: 00-933-4328
In stock
NSN: 5331-00-933-4328
FSC Code: 5331
MPN: B203425

5331-01-280-7525 (B1906.503)

NIIN: 01-280-7525
In stock
NSN: 5331-01-280-7525
FSC Code: 5331
MPN: B1906503

5331-22-269-1401 (60510-12H-1522)

NIIN: 22-269-1401
In stock
NSN: 5331-22-269-1401
FSC Code: 5331
MPN: 6051012H1522

5331-22-269-1399 (60510-12H-0276)

NIIN: 22-269-1399
In stock
NSN: 5331-22-269-1399
FSC Code: 5331
MPN: 6051012H0276

5331-01-424-0305 (605-10058-0)

NIIN: 01-424-0305
In stock
NSN: 5331-01-424-0305
FSC Code: 5331
MPN: 605100580

5331-01-424-0139 (605-10056-0)

NIIN: 01-424-0139
In stock
NSN: 5331-01-424-0139
FSC Code: 5331
MPN: 605100560

5331-22-269-1395 (60508-12H-0457)

NIIN: 22-269-1395
In stock
NSN: 5331-22-269-1395
FSC Code: 5331
MPN: 6050812H0457

5331-22-269-1394 (60508-12H-0279)

NIIN: 22-269-1394
In stock
NSN: 5331-22-269-1394
FSC Code: 5331
MPN: 6050812H0279

5331-01-569-9952 (605-058-003)

NIIN: 01-569-9952
In stock
NSN: 5331-01-569-9952
FSC Code: 5331
MPN: 605058003

5331-22-269-1389 (60502-27H-1323)

NIIN: 22-269-1389
In stock
NSN: 5331-22-269-1389
FSC Code: 5331
MPN: 6050227H1323

5331-01-264-0155 (B180-553)

NIIN: 01-264-0155
In stock
NSN: 5331-01-264-0155
FSC Code: 5331
MPN: B180553

5331-01-429-8485 (60502-24H-2579)

NIIN: 01-429-8485
In stock
NSN: 5331-01-429-8485
FSC Code: 5331
MPN: 6050224H2579

5331-22-269-1377 (60501-17H-1710)

NIIN: 22-269-1377
In stock
NSN: 5331-22-269-1377
FSC Code: 5331
MPN: 6050117H1710

5331-22-269-1381 (60501-17H-1443)

NIIN: 22-269-1381
In stock
NSN: 5331-22-269-1381
FSC Code: 5331
MPN: 6050117H1443

5331-22-269-1379 (60501-0003-0553)

NIIN: 22-269-1379
In stock
NSN: 5331-22-269-1379
FSC Code: 5331
MPN: 6050100030553

5331-01-422-4986 (605-00027-8)

NIIN: 01-422-4986
In stock
NSN: 5331-01-422-4986
FSC Code: 5331
MPN: 605000278

5331-01-497-2368 (605-00071-8)

NIIN: 01-497-2368
In stock
NSN: 5331-01-497-2368
FSC Code: 5331
MPN: 605000718

5331-01-447-8068 (605-00043-8)

NIIN: 01-447-8068
In stock
NSN: 5331-01-447-8068
FSC Code: 5331
MPN: 605000438

5331-01-422-4339 (605-00024-8)

NIIN: 01-422-4339
In stock
NSN: 5331-01-422-4339
FSC Code: 5331
MPN: 605000248

5331-01-338-6647 (B175D304EX1)

NIIN: 01-338-6647
In stock
NSN: 5331-01-338-6647
FSC Code: 5331
MPN: B175D304EX1