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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.

5331-00-392-0796 (B95040-8)

NIIN: 00-392-0796
In stock
NSN: 5331-00-392-0796
FSC Code: 5331
MPN: B950408

5331-01-503-3688 (6136-11-8814)

NIIN: 01-503-3688
In stock
NSN: 5331-01-503-3688
FSC Code: 5331
MPN: 6136118814

5331-00-001-4798 (B8TH1058)

NIIN: 00-001-4798
In stock
NSN: 5331-00-001-4798
FSC Code: 5331
MPN: B8TH1058

5331-00-839-1757 (B8SR725-80)

NIIN: 00-839-1757
In stock
NSN: 5331-00-839-1757
FSC Code: 5331
MPN: B8SR72580

5331-01-328-3716 (B86002-153N)

NIIN: 01-328-3716
In stock
NSN: 5331-01-328-3716
FSC Code: 5331
MPN: B86002153N

5331-01-327-3365 (B86002-238N)

NIIN: 01-327-3365
In stock
NSN: 5331-01-327-3365
FSC Code: 5331
MPN: B86002238N

5331-01-327-3369 (B86002-908S)

NIIN: 01-327-3369
In stock
NSN: 5331-01-327-3369
FSC Code: 5331
MPN: B86002908S

5331-01-328-3719 (B86002-230S)

NIIN: 01-328-3719
In stock
NSN: 5331-01-328-3719
FSC Code: 5331
MPN: B86002230S

5331-01-327-3366 (B86002-159N)

NIIN: 01-327-3366
In stock
NSN: 5331-01-327-3366
FSC Code: 5331
MPN: B86002159N

5331-01-327-3364 (B86002-222N)

NIIN: 01-327-3364
In stock
NSN: 5331-01-327-3364
FSC Code: 5331
MPN: B86002222N

5331-01-328-3718 (B86002-151S)

NIIN: 01-328-3718
In stock
NSN: 5331-01-328-3718
FSC Code: 5331
MPN: B86002151S

5331-22-269-1479 (61314-04H-0847)

NIIN: 22-269-1479
In stock
NSN: 5331-22-269-1479
FSC Code: 5331
MPN: 6131404H0847

5331-22-269-1592 (61301-05H-4609)

NIIN: 22-269-1592
In stock
NSN: 5331-22-269-1592
FSC Code: 5331
MPN: 6130105H4609

5331-00-599-0121 (B790124-1)

NIIN: 00-599-0121
In stock
NSN: 5331-00-599-0121
FSC Code: 5331
MPN: B7901241

5331-01-284-9388 (B-7783)

NIIN: 01-284-9388
In stock
NSN: 5331-01-284-9388
FSC Code: 5331
MPN: B7783

5331-01-539-0838 (6127-23)

NIIN: 01-539-0838
In stock
NSN: 5331-01-539-0838
FSC Code: 5331
MPN: 612723

5331-01-091-3332 (B-72361)

NIIN: 01-091-3332
In stock
NSN: 5331-01-091-3332
FSC Code: 5331
MPN: B72361

5331-01-175-6754 (B72313A-1)

NIIN: 01-175-6754
In stock
NSN: 5331-01-175-6754
FSC Code: 5331
MPN: B72313A1

5331-01-175-6753 (B72313A-1)

NIIN: 01-175-6753
In stock
NSN: 5331-01-175-6753
FSC Code: 5331
MPN: B72313A1

5331-01-242-7005 (B715-51-18)

NIIN: 01-242-7005
In stock
NSN: 5331-01-242-7005
FSC Code: 5331
MPN: B7155118

5331-01-241-1556 (B715-51-16)

NIIN: 01-241-1556
In stock
NSN: 5331-01-241-1556
FSC Code: 5331
MPN: B7155116

5331-00-420-5921 (B710-503)

NIIN: 00-420-5921
In stock
NSN: 5331-00-420-5921
FSC Code: 5331
MPN: B710503

5331-01-006-9328 (B71009)

NIIN: 01-006-9328
In stock
NSN: 5331-01-006-9328
FSC Code: 5331
MPN: B71009

5331-00-432-7972 (B6QW33549A)

NIIN: 00-432-7972
In stock
NSN: 5331-00-432-7972
FSC Code: 5331
MPN: B6QW33549A

5331-22-269-1447 (61202-36H-1860)

NIIN: 22-269-1447
In stock
NSN: 5331-22-269-1447
FSC Code: 5331
MPN: 6120236H1860

5331-01-529-1666 (61-2004)

NIIN: 01-529-1666
In stock
NSN: 5331-01-529-1666
FSC Code: 5331
MPN: 612004

5331-00-143-6822 (B67115-234)

NIIN: 00-143-6822
In stock
NSN: 5331-00-143-6822
FSC Code: 5331
MPN: B67115234

5331-00-935-9199 (B67114-04)

NIIN: 00-935-9199
In stock
NSN: 5331-00-935-9199
FSC Code: 5331
MPN: B6711404

5331-00-935-9201 (B67114-08)

NIIN: 00-935-9201
In stock
NSN: 5331-00-935-9201
FSC Code: 5331
MPN: B6711408

5331-01-471-5581 (61-1497)

NIIN: 01-471-5581
In stock
NSN: 5331-01-471-5581
FSC Code: 5331
MPN: 611497

5331-01-274-7091 (B5A33547A)

NIIN: 01-274-7091
In stock
NSN: 5331-01-274-7091
FSC Code: 5331
MPN: B5A33547A

5331-00-580-5179 (B59109-11)

NIIN: 00-580-5179
In stock
NSN: 5331-00-580-5179
FSC Code: 5331
MPN: B5910911

5331-00-684-5591 (B59109-28)

NIIN: 00-684-5591
In stock
NSN: 5331-00-684-5591
FSC Code: 5331
MPN: B5910928

5331-01-154-9455 (B-568-216)

NIIN: 01-154-9455
In stock
NSN: 5331-01-154-9455
FSC Code: 5331
MPN: B568216

5331-00-844-4873 (B58108-2)

NIIN: 00-844-4873
In stock
NSN: 5331-00-844-4873
FSC Code: 5331
MPN: B581082

5331-01-264-3538 (B568-265)

NIIN: 01-264-3538
In stock
NSN: 5331-01-264-3538
FSC Code: 5331
MPN: B568265

5331-01-171-1316 (B568-226)

NIIN: 01-171-1316
In stock
NSN: 5331-01-171-1316
FSC Code: 5331
MPN: B568226

5331-01-148-9716 (B-568-122)

NIIN: 01-148-9716
In stock
NSN: 5331-01-148-9716
FSC Code: 5331
MPN: B568122

5331-01-161-6035 (B-568-121)

NIIN: 01-161-6035
In stock
NSN: 5331-01-161-6035
FSC Code: 5331
MPN: B568121

5331-22-269-1433 (61106-18H-02)

NIIN: 22-269-1433
In stock
NSN: 5331-22-269-1433
FSC Code: 5331
MPN: 6110618H02

5331-01-129-4336 (B5240-6203)

NIIN: 01-129-4336
In stock
NSN: 5331-01-129-4336
FSC Code: 5331
MPN: B52406203

5331-01-289-6102 (B-512582)

NIIN: 01-289-6102
In stock
NSN: 5331-01-289-6102
FSC Code: 5331
MPN: B512582

5331-00-055-5049 (B4SR725-80)

NIIN: 00-055-5049
In stock
NSN: 5331-00-055-5049
FSC Code: 5331
MPN: B4SR72580

5331-00-599-2208 (B463126REV1PT3)

NIIN: 00-599-2208
In stock
NSN: 5331-00-599-2208
FSC Code: 5331
MPN: B463126REV1PT3

5331-01-099-0271 (B456989)

NIIN: 01-099-0271
In stock
NSN: 5331-01-099-0271
FSC Code: 5331
MPN: B456989

5331-00-913-0834 (B4555PC20)

NIIN: 00-913-0834
In stock
NSN: 5331-00-913-0834
FSC Code: 5331
MPN: B4555PC20

5331-01-341-4593 (60XA13-27)

NIIN: 01-341-4593
In stock
NSN: 5331-01-341-4593
FSC Code: 5331
MPN: 60XA1327

5331-00-018-7485 (B4330-2430-34)

NIIN: 00-018-7485
In stock
NSN: 5331-00-018-7485
FSC Code: 5331
MPN: B4330243034