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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.

5331-00-490-1899 (2CK36)

NIIN: 00-490-1899
In stock
NSN: 5331-00-490-1899
FSC Code: 5331
MPN: 2CK36

5331-01-233-9976 (2CK580)

NIIN: 01-233-9976
In stock
NSN: 5331-01-233-9976
FSC Code: 5331
MPN: 2CK580

5331-01-210-9331 (2CK37)

NIIN: 01-210-9331
In stock
NSN: 5331-01-210-9331
FSC Code: 5331
MPN: 2CK37

5331-01-225-0917 (2CK249)

NIIN: 01-225-0917
In stock
NSN: 5331-01-225-0917
FSC Code: 5331
MPN: 2CK249

5331-01-210-0639 (2CF183)

NIIN: 01-210-0639
In stock
NSN: 5331-01-210-0639
FSC Code: 5331
MPN: 2CF183

5331-01-269-6079 (2CD540)

NIIN: 01-269-6079
In stock
NSN: 5331-01-269-6079
FSC Code: 5331
MPN: 2CD540

5331-01-244-8964 (2CD818)

NIIN: 01-244-8964
In stock
NSN: 5331-01-244-8964
FSC Code: 5331
MPN: 2CD818

5331-01-229-0726 (2CD546)

NIIN: 01-229-0726
In stock
NSN: 5331-01-229-0726
FSC Code: 5331
MPN: 2CD546

5331-01-203-3238 (2CD310)

NIIN: 01-203-3238
In stock
NSN: 5331-01-203-3238
FSC Code: 5331
MPN: 2CD310

5331-01-234-7614 (2CD25)

NIIN: 01-234-7614
In stock
NSN: 5331-01-234-7614
FSC Code: 5331
MPN: 2CD25

5331-01-236-9052 (2CB599)

NIIN: 01-236-9052
In stock
NSN: 5331-01-236-9052
FSC Code: 5331
MPN: 2CB599

5331-01-488-7779 (10-0265)

NIIN: 01-488-7779
In stock
NSN: 5331-01-488-7779
FSC Code: 5331
MPN: 100265

5331-00-086-8885 (2C2784)

NIIN: 00-086-8885
In stock
NSN: 5331-00-086-8885
FSC Code: 5331
MPN: 2C2784

5331-01-398-6588 (100250-19)

NIIN: 01-398-6588
In stock
NSN: 5331-01-398-6588
FSC Code: 5331
MPN: 10025019

5331-99-611-4995 (100-248-0270)

NIIN: 99-611-4995
In stock
NSN: 5331-99-611-4995
FSC Code: 5331
MPN: 1002480270

5331-99-943-9025 (100-244-0270)

NIIN: 99-943-9025
In stock
NSN: 5331-99-943-9025
FSC Code: 5331
MPN: 1002440270

5331-01-414-6472 (1002424-P5)

NIIN: 01-414-6472
In stock
NSN: 5331-01-414-6472
FSC Code: 5331
MPN: 1002424P5

5331-99-101-7890 (100-240-0270)

NIIN: 99-101-7890
In stock
NSN: 5331-99-101-7890
FSC Code: 5331
MPN: 1002400270

5331-01-524-8591 (LP495-139X3-5-8)

NIIN: 01-524-8591
In stock
NSN: 5331-01-524-8591
FSC Code: 5331
MPN: LP495139X358

5331-01-069-3116 (2-BP-11)

NIIN: 01-069-3116
In stock
NSN: 5331-01-069-3116
FSC Code: 5331
MPN: 2BP11

5331-99-253-0713 (100-236-1911)

NIIN: 99-253-0713
In stock
NSN: 5331-99-253-0713
FSC Code: 5331
MPN: 1002361911

5331-01-069-3117 (2-BP-107)

NIIN: 01-069-3117
In stock
NSN: 5331-01-069-3117
FSC Code: 5331
MPN: 2BP107

5331-99-350-8215 (VA-49-0061-234)

NIIN: 99-350-8215
In stock
NSN: 5331-99-350-8215
FSC Code: 5331
MPN: VA490061234

5331-99-946-7108 (FL1434AISSUE20ITEM46)

NIIN: 99-946-7108
In stock
NSN: 5331-99-946-7108
FSC Code: 5331
MPN: FL1434AISSUE20ITEM46

5331-99-611-4940 (100-231-1109)

NIIN: 99-611-4940
In stock
NSN: 5331-99-611-4940
FSC Code: 5331
MPN: 1002311109

5331-01-231-7476 (2BG652)

NIIN: 01-231-7476
In stock
NSN: 5331-01-231-7476
FSC Code: 5331
MPN: 2BG652

5331-01-526-0374 (100-226-1109)

NIIN: 01-526-0374
In stock
NSN: 5331-01-526-0374
FSC Code: 5331
MPN: 1002261109

5331-01-168-9913 (2BF921)

NIIN: 01-168-9913
In stock
NSN: 5331-01-168-9913
FSC Code: 5331
MPN: 2BF921

5331-01-231-7475 (2BG634)

NIIN: 01-231-7475
In stock
NSN: 5331-01-231-7475
FSC Code: 5331
MPN: 2BG634

5331-01-213-7644 (2BF377)

NIIN: 01-213-7644
In stock
NSN: 5331-01-213-7644
FSC Code: 5331
MPN: 2BF377

5331-01-268-6820 (2BE275)

NIIN: 01-268-6820
In stock
NSN: 5331-01-268-6820
FSC Code: 5331
MPN: 2BE275

5331-01-245-3167 (2BD993)

NIIN: 01-245-3167
In stock
NSN: 5331-01-245-3167
FSC Code: 5331
MPN: 2BD993

5331-99-943-8804 (AS2842-1986TABLE1ITEM222)

NIIN: 99-943-8804
In stock
NSN: 5331-99-943-8804
FSC Code: 5331
MPN: AS28421986TABLE1ITEM222

5331-01-061-4914 (2BE615A14B14E1434F17)

NIIN: 01-061-4914
In stock
NSN: 5331-01-061-4914
FSC Code: 5331
MPN: 2BE615A14B14E1434F17

5331-01-236-2180 (2BC884)

NIIN: 01-236-2180
In stock
NSN: 5331-01-236-2180
FSC Code: 5331
MPN: 2BC884

5331-99-968-8183 (VA-49-0061-110)

NIIN: 99-968-8183
In stock
NSN: 5331-99-968-8183
FSC Code: 5331
MPN: VA490061110

5331-01-155-3406 (2BA486)

NIIN: 01-155-3406
In stock
NSN: 5331-01-155-3406
FSC Code: 5331
MPN: 2BA486

5331-01-163-1988 (2BA37)

NIIN: 01-163-1988
In stock
NSN: 5331-01-163-1988
FSC Code: 5331
MPN: 2BA37

5331-99-349-5874 (100-213-8873)

NIIN: 99-349-5874
In stock
NSN: 5331-99-349-5874
FSC Code: 5331
MPN: 1002138873

5331-01-146-1683 (2B614-006)

NIIN: 01-146-1683
In stock
NSN: 5331-01-146-1683
FSC Code: 5331
MPN: 2B614006

5331-00-558-1629 (2B420)

NIIN: 00-558-1629
In stock
NSN: 5331-00-558-1629
FSC Code: 5331
MPN: 2B420

5331-01-157-6748 (2AW919)

NIIN: 01-157-6748
In stock
NSN: 5331-01-157-6748
FSC Code: 5331
MPN: 2AW919

5331-01-163-5829 (2AW962)

NIIN: 01-163-5829
In stock
NSN: 5331-01-163-5829
FSC Code: 5331
MPN: 2AW962

5331-01-159-8366 (2AW751)

NIIN: 01-159-8366
In stock
NSN: 5331-01-159-8366
FSC Code: 5331
MPN: 2AW751

5331-01-173-3423 (2AW956)

NIIN: 01-173-3423
In stock
NSN: 5331-01-173-3423
FSC Code: 5331
MPN: 2AW956

5331-01-173-9447 (2AW689)

NIIN: 01-173-9447
In stock
NSN: 5331-01-173-9447
FSC Code: 5331
MPN: 2AW689

5331-01-165-1194 (2AW655)

NIIN: 01-165-1194
In stock
NSN: 5331-01-165-1194
FSC Code: 5331
MPN: 2AW655

5331-01-159-6406 (2AW604)

NIIN: 01-159-6406
In stock
NSN: 5331-01-159-6406
FSC Code: 5331
MPN: 2AW604