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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.

5331-01-193-9384 (358L001)

NIIN: 01-193-9384
In stock
NSN: 5331-01-193-9384
FSC Code: 5331
MPN: 358L001

5331-01-371-4735 (117822-00)

NIIN: 01-371-4735
In stock
NSN: 5331-01-371-4735
FSC Code: 5331
MPN: 11782200

5331-99-770-5177 (DEFSTAN02-337-224-MN70)

NIIN: 99-770-5177
In stock
NSN: 5331-99-770-5177
FSC Code: 5331
MPN: DEFSTAN02337224MN70

5331-01-474-1904 (117-7273)

NIIN: 01-474-1904
In stock
NSN: 5331-01-474-1904
FSC Code: 5331
MPN: 1177273

5331-01-474-2187 (117-7282)

NIIN: 01-474-2187
In stock
NSN: 5331-01-474-2187
FSC Code: 5331
MPN: 1177282

5331-01-369-6944 (117-6340)

NIIN: 01-369-6944
In stock
NSN: 5331-01-369-6944
FSC Code: 5331
MPN: 1176340

5331-01-142-4808 (3582-004-087)

NIIN: 01-142-4808
In stock
NSN: 5331-01-142-4808
FSC Code: 5331
MPN: 3582004087

5331-00-078-0265 (35-753)

NIIN: 00-078-0265
In stock
NSN: 5331-00-078-0265
FSC Code: 5331
MPN: 35753

5331-00-078-0304 (35-741)

NIIN: 00-078-0304
In stock
NSN: 5331-00-078-0304
FSC Code: 5331
MPN: 35741

5331-01-487-6543 (117-1495)

NIIN: 01-487-6543
In stock
NSN: 5331-01-487-6543
FSC Code: 5331
MPN: 1171495

5331-14-400-8074 (116-84X6-99-50D7)

NIIN: 14-400-8074
In stock
NSN: 5331-14-400-8074
FSC Code: 5331
MPN: 11684X69950D7

5331-01-373-1960 (5331PL0658545)

NIIN: 01-373-1960
In stock
NSN: 5331-01-373-1960
FSC Code: 5331
MPN: 5331PL0658545

5331-00-847-3919 (355965R1)

NIIN: 00-847-3919
In stock
NSN: 5331-00-847-3919
FSC Code: 5331
MPN: 355965R1

5331-00-191-6590 (355740R1)

NIIN: 00-191-6590
In stock
NSN: 5331-00-191-6590
FSC Code: 5331
MPN: 355740R1

5331-01-396-8149 (1-1659-15-T)

NIIN: 01-396-8149
In stock
NSN: 5331-01-396-8149
FSC Code: 5331
MPN: 1165915T

5331-01-191-2962 (35500-88-EU)

NIIN: 01-191-2962
In stock
NSN: 5331-01-191-2962
FSC Code: 5331
MPN: 3550088EU

5331-01-125-1896 (35500-128FV)

NIIN: 01-125-1896
In stock
NSN: 5331-01-125-1896
FSC Code: 5331
MPN: 35500128FV

5331-01-224-8061 (35500-38FN)

NIIN: 01-224-8061
In stock
NSN: 5331-01-224-8061
FSC Code: 5331
MPN: 3550038FN

5331-01-191-6075 (35500-100-EU)

NIIN: 01-191-6075
In stock
NSN: 5331-01-191-6075
FSC Code: 5331
MPN: 35500100EU

5331-01-260-0464 (35500-286-GN)

NIIN: 01-260-0464
In stock
NSN: 5331-01-260-0464
FSC Code: 5331
MPN: 35500286GN

5331-01-508-9347 (116-35039)

NIIN: 01-508-9347
In stock
NSN: 5331-01-508-9347
FSC Code: 5331
MPN: 11635039

5331-01-508-9316 (116-35039)

NIIN: 01-508-9316
In stock
NSN: 5331-01-508-9316
FSC Code: 5331
MPN: 11635039

5331-01-508-9321 (116-35039)

NIIN: 01-508-9321
In stock
NSN: 5331-01-508-9321
FSC Code: 5331
MPN: 11635039

5331-01-508-9349 (116-35039)

NIIN: 01-508-9349
In stock
NSN: 5331-01-508-9349
FSC Code: 5331
MPN: 11635039

5331-01-079-6578 (35490-62)

NIIN: 01-079-6578
In stock
NSN: 5331-01-079-6578
FSC Code: 5331
MPN: 3549062

5331-01-110-8838 (35490-54)

NIIN: 01-110-8838
In stock
NSN: 5331-01-110-8838
FSC Code: 5331
MPN: 3549054

5331-01-067-5099 (35490-55)

NIIN: 01-067-5099
In stock
NSN: 5331-01-067-5099
FSC Code: 5331
MPN: 3549055

5331-00-057-4445 (354836R1)

NIIN: 00-057-4445
In stock
NSN: 5331-00-057-4445
FSC Code: 5331
MPN: 354836R1

5331-01-536-9808 (116-2904)

NIIN: 01-536-9808
In stock
NSN: 5331-01-536-9808
FSC Code: 5331
MPN: 1162904

5331-01-050-9669 (354-21)

NIIN: 01-050-9669
In stock
NSN: 5331-01-050-9669
FSC Code: 5331
MPN: 35421

5331-00-411-0718 (3541-31-236)

NIIN: 00-411-0718
In stock
NSN: 5331-00-411-0718
FSC Code: 5331
MPN: 354131236

5331-00-869-3918 (3541-31-222)

NIIN: 00-869-3918
In stock
NSN: 5331-00-869-3918
FSC Code: 5331
MPN: 354131222

5331-00-922-1735 (3541-31-226)

NIIN: 00-922-1735
In stock
NSN: 5331-00-922-1735
FSC Code: 5331
MPN: 354131226

5331-00-869-3942 (3541-31-013)

NIIN: 00-869-3942
In stock
NSN: 5331-00-869-3942
FSC Code: 5331
MPN: 354131013

5331-00-869-3941 (3541-31-141)

NIIN: 00-869-3941
In stock
NSN: 5331-00-869-3941
FSC Code: 5331
MPN: 354131141

5331-00-869-3945 (3541-31-020)

NIIN: 00-869-3945
In stock
NSN: 5331-00-869-3945
FSC Code: 5331
MPN: 354131020

5331-01-078-9366 (3541-31-010)

NIIN: 01-078-9366
In stock
NSN: 5331-01-078-9366
FSC Code: 5331
MPN: 354131010

5331-00-869-3940 (3541-31-015)

NIIN: 00-869-3940
In stock
NSN: 5331-00-869-3940
FSC Code: 5331
MPN: 354131015

5331-01-334-8573 (354-0674-00)

NIIN: 01-334-8573
In stock
NSN: 5331-01-334-8573
FSC Code: 5331
MPN: 354067400

5331-01-272-5265 (354-0620-00)

NIIN: 01-272-5265
In stock
NSN: 5331-01-272-5265
FSC Code: 5331
MPN: 354062000

5331-01-312-4818 (354-0411-00)

NIIN: 01-312-4818
In stock
NSN: 5331-01-312-4818
FSC Code: 5331
MPN: 354041100

5331-01-312-3746 (354-0411-04)

NIIN: 01-312-3746
In stock
NSN: 5331-01-312-3746
FSC Code: 5331
MPN: 354041104

5331-01-311-0008 (354-0581-00)

NIIN: 01-311-0008
In stock
NSN: 5331-01-311-0008
FSC Code: 5331
MPN: 354058100

5331-01-392-6540 (1160-F-1-1/2IN)

NIIN: 01-392-6540
In stock
NSN: 5331-01-392-6540
FSC Code: 5331
MPN: 1160F112IN

5331-01-116-8983 (354-0563-00)

NIIN: 01-116-8983
In stock
NSN: 5331-01-116-8983
FSC Code: 5331
MPN: 354056300

5331-01-435-5216 (11-6094A000)

NIIN: 01-435-5216
In stock
NSN: 5331-01-435-5216
FSC Code: 5331
MPN: 116094A000

5331-01-435-5220 (11-6094A000)

NIIN: 01-435-5220
In stock
NSN: 5331-01-435-5220
FSC Code: 5331
MPN: 116094A000

5331-01-438-0344 (1160F)

NIIN: 01-438-0344
In stock
NSN: 5331-01-438-0344
FSC Code: 5331
MPN: 1160F