Skip to content

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.

5331-01-435-5419 (CM-153-B46A)

NIIN: 01-435-5419
In stock
NSN: 5331-01-435-5419
FSC Code: 5331
MPN: CM153B46A

5331-01-435-5506 (CM1-208-B64A)

NIIN: 01-435-5506
In stock
NSN: 5331-01-435-5506
FSC Code: 5331
MPN: CM1208B64A

5331-01-435-5508 (CM1-230-B46A)

NIIN: 01-435-5508
In stock
NSN: 5331-01-435-5508
FSC Code: 5331
MPN: CM1230B46A

5331-00-891-8902 (SA12599-158)

NIIN: 00-891-8902
In stock
NSN: 5331-00-891-8902
FSC Code: 5331
MPN: SA12599158

5331-01-304-7781 (S98707)

NIIN: 01-304-7781
In stock
NSN: 5331-01-304-7781
FSC Code: 5331
MPN: S98707

5331-01-117-3236 (S962-0017-Z)

NIIN: 01-117-3236
In stock
NSN: 5331-01-117-3236
FSC Code: 5331
MPN: S9620017Z

5331-01-190-1887 (S94563)

NIIN: 01-190-1887
In stock
NSN: 5331-01-190-1887
FSC Code: 5331
MPN: S94563

5331-00-559-8299 (S944-4)

NIIN: 00-559-8299
In stock
NSN: 5331-00-559-8299
FSC Code: 5331
MPN: S9444

5331-00-401-4807 (S9413-626)

NIIN: 00-401-4807
In stock
NSN: 5331-00-401-4807
FSC Code: 5331
MPN: S9413626

5331-01-030-2293 (S9427-504)

NIIN: 01-030-2293
In stock
NSN: 5331-01-030-2293
FSC Code: 5331
MPN: S9427504

5331-00-342-0546 (S9413-704)

NIIN: 00-342-0546
In stock
NSN: 5331-00-342-0546
FSC Code: 5331
MPN: S9413704

5331-01-290-7273 (S9418-006)

NIIN: 01-290-7273
In stock
NSN: 5331-01-290-7273
FSC Code: 5331
MPN: S9418006

5331-01-315-6628 (S9413-736)

NIIN: 01-315-6628
In stock
NSN: 5331-01-315-6628
FSC Code: 5331
MPN: S9413736

5331-01-194-8971 (S9413-737)

NIIN: 01-194-8971
In stock
NSN: 5331-01-194-8971
FSC Code: 5331
MPN: S9413737

5331-01-005-4407 (S9413-629)

NIIN: 01-005-4407
In stock
NSN: 5331-01-005-4407
FSC Code: 5331
MPN: S9413629

5331-00-480-3609 (S9413-731)

NIIN: 00-480-3609
In stock
NSN: 5331-00-480-3609
FSC Code: 5331
MPN: S9413731

5331-01-006-6915 (S9413-674)

NIIN: 01-006-6915
In stock
NSN: 5331-01-006-6915
FSC Code: 5331
MPN: S9413674

5331-00-342-0550 (S9413-705)

NIIN: 00-342-0550
In stock
NSN: 5331-00-342-0550
FSC Code: 5331
MPN: S9413705

5331-01-028-9353 (S9413-656)

NIIN: 01-028-9353
In stock
NSN: 5331-01-028-9353
FSC Code: 5331
MPN: S9413656

5331-00-467-0171 (S9413-702)

NIIN: 00-467-0171
In stock
NSN: 5331-00-467-0171
FSC Code: 5331
MPN: S9413702

5331-00-245-6673 (S9413-611)

NIIN: 00-245-6673
In stock
NSN: 5331-00-245-6673
FSC Code: 5331
MPN: S9413611

5331-00-342-0557 (S9413-706)

NIIN: 00-342-0557
In stock
NSN: 5331-00-342-0557
FSC Code: 5331
MPN: S9413706

5331-00-340-6042 (S9413-651)

NIIN: 00-340-6042
In stock
NSN: 5331-00-340-6042
FSC Code: 5331
MPN: S9413651

5331-00-245-6747 (S9413-530)

NIIN: 00-245-6747
In stock
NSN: 5331-00-245-6747
FSC Code: 5331
MPN: S9413530

5331-01-017-5614 (S9413-543)

NIIN: 01-017-5614
In stock
NSN: 5331-01-017-5614
FSC Code: 5331
MPN: S9413543

5331-01-274-6099 (S9413-544)

NIIN: 01-274-6099
In stock
NSN: 5331-01-274-6099
FSC Code: 5331
MPN: S9413544

5331-00-615-1478 (S9413-595)

NIIN: 00-615-1478
In stock
NSN: 5331-00-615-1478
FSC Code: 5331
MPN: S9413595

5331-01-263-8838 (S9413-571)

NIIN: 01-263-8838
In stock
NSN: 5331-01-263-8838
FSC Code: 5331
MPN: S9413571

5331-01-203-0059 (S9413-534)

NIIN: 01-203-0059
In stock
NSN: 5331-01-203-0059
FSC Code: 5331
MPN: S9413534

5331-01-059-1132 (S9413-533)

NIIN: 01-059-1132
In stock
NSN: 5331-01-059-1132
FSC Code: 5331
MPN: S9413533

5331-01-156-6446 (S9413-138)

NIIN: 01-156-6446
In stock
NSN: 5331-01-156-6446
FSC Code: 5331
MPN: S9413138

5331-00-411-3722 (S9413-541)

NIIN: 00-411-3722
In stock
NSN: 5331-00-411-3722
FSC Code: 5331
MPN: S9413541

5331-01-019-1523 (S9413-529)

NIIN: 01-019-1523
In stock
NSN: 5331-01-019-1523
FSC Code: 5331
MPN: S9413529

5331-01-156-6441 (S9413-527)

NIIN: 01-156-6441
In stock
NSN: 5331-01-156-6441
FSC Code: 5331
MPN: S9413527

5331-00-139-7386 (S9413-531)

NIIN: 00-139-7386
In stock
NSN: 5331-00-139-7386
FSC Code: 5331
MPN: S9413531

5331-01-290-7274 (S9413-225)

NIIN: 01-290-7274
In stock
NSN: 5331-01-290-7274
FSC Code: 5331
MPN: S9413225

5331-01-156-6442 (S9413-275)

NIIN: 01-156-6442
In stock
NSN: 5331-01-156-6442
FSC Code: 5331
MPN: S9413275

5331-01-020-0950 (S9413-501)

NIIN: 01-020-0950
In stock
NSN: 5331-01-020-0950
FSC Code: 5331
MPN: S9413501

5331-00-186-6139 (S9413-339)

NIIN: 00-186-6139
In stock
NSN: 5331-00-186-6139
FSC Code: 5331
MPN: S9413339

5331-01-008-1148 (S9413-153)

NIIN: 01-008-1148
In stock
NSN: 5331-01-008-1148
FSC Code: 5331
MPN: S9413153

5331-01-278-1740 (S9413-268)

NIIN: 01-278-1740
In stock
NSN: 5331-01-278-1740
FSC Code: 5331
MPN: S9413268

5331-00-406-6517 (S9413-044)

NIIN: 00-406-6517
In stock
NSN: 5331-00-406-6517
FSC Code: 5331
MPN: S9413044

5331-00-352-0426 (S9413-154)

NIIN: 00-352-0426
In stock
NSN: 5331-00-352-0426
FSC Code: 5331
MPN: S9413154

5331-00-009-1570 (S9413-116)

NIIN: 00-009-1570
In stock
NSN: 5331-00-009-1570
FSC Code: 5331
MPN: S9413116

5331-01-156-6443 (S9413-050)

NIIN: 01-156-6443
In stock
NSN: 5331-01-156-6443
FSC Code: 5331
MPN: S9413050

5331-01-089-3739 (S9413-108)

NIIN: 01-089-3739
In stock
NSN: 5331-01-089-3739
FSC Code: 5331
MPN: S9413108

5331-00-147-6160 (S9413-018)

NIIN: 00-147-6160
In stock
NSN: 5331-00-147-6160
FSC Code: 5331
MPN: S9413018

5331-01-305-8592 (S9412-681)

NIIN: 01-305-8592
In stock
NSN: 5331-01-305-8592
FSC Code: 5331
MPN: S9412681