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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.

5331-01-350-4372 (AM1340000P006)

NIIN: 01-350-4372
In stock
NSN: 5331-01-350-4372
FSC Code: 5331
MPN: AM1340000P006

5331-15-178-4918 (715303268A)

NIIN: 15-178-4918
In stock
NSN: 5331-15-178-4918
FSC Code: 5331
MPN: 715303268A

5331-15-178-4924 (715303245A)

NIIN: 15-178-4924
In stock
NSN: 5331-15-178-4924
FSC Code: 5331
MPN: 715303245A

5331-01-004-7920 (ES152S021-1T)

NIIN: 01-004-7920
In stock
NSN: 5331-01-004-7920
FSC Code: 5331
MPN: ES152S0211T

5331-00-604-5352 (ES1422-22D)

NIIN: 00-604-5352
In stock
NSN: 5331-00-604-5352
FSC Code: 5331
MPN: ES142222D

5331-00-601-7326 (ES1422-79D)

NIIN: 00-601-7326
In stock
NSN: 5331-00-601-7326
FSC Code: 5331
MPN: ES142279D

5331-01-462-7525 (715085A00)

NIIN: 01-462-7525
In stock
NSN: 5331-01-462-7525
FSC Code: 5331
MPN: 715085A00

5331-01-249-5645 (ES125)

NIIN: 01-249-5645
In stock
NSN: 5331-01-249-5645
FSC Code: 5331
MPN: ES125

5331-01-539-6384 (714B7MS-772-P17)

NIIN: 01-539-6384
In stock
NSN: 5331-01-539-6384
FSC Code: 5331
MPN: 714B7MS772P17

5331-00-152-3099 (ER8639)

NIIN: 00-152-3099
In stock
NSN: 5331-00-152-3099
FSC Code: 5331
MPN: ER8639

5331-00-470-3576 (ER8544)

NIIN: 00-470-3576
In stock
NSN: 5331-00-470-3576
FSC Code: 5331
MPN: ER8544

5331-00-470-3577 (ER82076)

NIIN: 00-470-3577
In stock
NSN: 5331-00-470-3577
FSC Code: 5331
MPN: ER82076

5331-01-508-0156 (7139-821)

NIIN: 01-508-0156
In stock
NSN: 5331-01-508-0156
FSC Code: 5331
MPN: 7139821

5331-01-434-4817 (71340-0)

NIIN: 01-434-4817
In stock
NSN: 5331-01-434-4817
FSC Code: 5331
MPN: 713400

5331-01-387-5385 (7124MS-964-5708)

NIIN: 01-387-5385
In stock
NSN: 5331-01-387-5385
FSC Code: 5331
MPN: 7124MS9645708

5331-01-421-2811 (7123MS964-P4)

NIIN: 01-421-2811
In stock
NSN: 5331-01-421-2811
FSC Code: 5331
MPN: 7123MS964P4

5331-01-338-0255 (EF14/18-443-14000-605B)

NIIN: 01-338-0255
In stock
NSN: 5331-01-338-0255
FSC Code: 5331
MPN: EF141844314000605B

5331-01-293-9422 (EF14-191.5/243-14300-0422A)

NIIN: 01-293-9422
In stock
NSN: 5331-01-293-9422
FSC Code: 5331
MPN: EF141915243143000422A

5331-01-293-9421 (EF14/18-443-14000-0605-A)

NIIN: 01-293-9421
In stock
NSN: 5331-01-293-9421
FSC Code: 5331
MPN: EF1418443140000605A

5331-01-181-7893 (EEP88-11-16X15-)

NIIN: 01-181-7893
In stock
NSN: 5331-01-181-7893
FSC Code: 5331
MPN: EEP881116X15

5331-01-163-5612 (EEP-54-ASX-7)

NIIN: 01-163-5612
In stock
NSN: 5331-01-163-5612
FSC Code: 5331
MPN: EEP54ASX7

5331-01-163-5611 (EEP-54-ASX-3)

NIIN: 01-163-5611
In stock
NSN: 5331-01-163-5611
FSC Code: 5331
MPN: EEP54ASX3

5331-01-309-9365 (EEP-243-6)

NIIN: 01-309-9365
In stock
NSN: 5331-01-309-9365
FSC Code: 5331
MPN: EEP2436

5331-01-310-3890 (EEP)

NIIN: 01-310-3890
In stock
NSN: 5331-01-310-3890
FSC Code: 5331
MPN: EEP

5331-01-421-2809 (7118MS964-P4)

NIIN: 01-421-2809
In stock
NSN: 5331-01-421-2809
FSC Code: 5331
MPN: 7118MS964P4

5331-01-421-8340 (7116FS964-5711)

NIIN: 01-421-8340
In stock
NSN: 5331-01-421-8340
FSC Code: 5331
MPN: 7116FS9645711

5331-01-539-6403 (7116MR-777-9173)

NIIN: 01-539-6403
In stock
NSN: 5331-01-539-6403
FSC Code: 5331
MPN: 7116MR7779173

5331-01-566-7548 (711510-3)

NIIN: 01-566-7548
In stock
NSN: 5331-01-566-7548
FSC Code: 5331
MPN: 7115103

5331-01-421-2813 (7113MS964-5711)

NIIN: 01-421-2813
In stock
NSN: 5331-01-421-2813
FSC Code: 5331
MPN: 7113MS9645711

5331-01-426-1284 (7-10600-00-002)

NIIN: 01-426-1284
In stock
NSN: 5331-01-426-1284
FSC Code: 5331
MPN: 71060000002

5331-01-426-1313 (7-10600-00-053)

NIIN: 01-426-1313
In stock
NSN: 5331-01-426-1313
FSC Code: 5331
MPN: 71060000053

5331-01-426-1311 (7-10600-00-052)

NIIN: 01-426-1311
In stock
NSN: 5331-01-426-1311
FSC Code: 5331
MPN: 71060000052

5331-01-426-1292 (7-10600-00-019)

NIIN: 01-426-1292
In stock
NSN: 5331-01-426-1292
FSC Code: 5331
MPN: 71060000019

5331-01-426-1310 (7-10600-00-045)

NIIN: 01-426-1310
In stock
NSN: 5331-01-426-1310
FSC Code: 5331
MPN: 71060000045

5331-01-426-1279 (7-10600-00-028)

NIIN: 01-426-1279
In stock
NSN: 5331-01-426-1279
FSC Code: 5331
MPN: 71060000028

5331-01-426-1290 (7-10600-00-009)

NIIN: 01-426-1290
In stock
NSN: 5331-01-426-1290
FSC Code: 5331
MPN: 71060000009

5331-01-426-1288 (7-10600-00-003)

NIIN: 01-426-1288
In stock
NSN: 5331-01-426-1288
FSC Code: 5331
MPN: 71060000003

5331-01-426-1296 (7-10600-00-023)

NIIN: 01-426-1296
In stock
NSN: 5331-01-426-1296
FSC Code: 5331
MPN: 71060000023

5331-00-847-4950 (EAB726-014)

NIIN: 00-847-4950
In stock
NSN: 5331-00-847-4950
FSC Code: 5331
MPN: EAB726014

5331-01-049-1211 (EA-9239)

NIIN: 01-049-1211
In stock
NSN: 5331-01-049-1211
FSC Code: 5331
MPN: EA9239

5331-00-052-1694 (EA66)

NIIN: 00-052-1694
In stock
NSN: 5331-00-052-1694
FSC Code: 5331
MPN: EA66

5331-01-114-9701 (EA52)

NIIN: 01-114-9701
In stock
NSN: 5331-01-114-9701
FSC Code: 5331
MPN: EA52

5331-01-190-1901 (E-97172)

NIIN: 01-190-1901
In stock
NSN: 5331-01-190-1901
FSC Code: 5331
MPN: E97172

5331-01-190-1900 (E-97172)

NIIN: 01-190-1900
In stock
NSN: 5331-01-190-1900
FSC Code: 5331
MPN: E97172

5331-20-001-6511 (A1-70-6422-12-02)

NIIN: 20-001-6511
In stock
NSN: 5331-20-001-6511
FSC Code: 5331
MPN: A17064221202

5331-21-921-7690 (710-10079)

NIIN: 21-921-7690
In stock
NSN: 5331-21-921-7690
FSC Code: 5331
MPN: 71010079

5331-21-921-7691 (A1-70-6422-12-02)

NIIN: 21-921-7691
In stock
NSN: 5331-21-921-7691
FSC Code: 5331
MPN: A17064221202

5331-00-803-4920 (E87772-11)

NIIN: 00-803-4920
In stock
NSN: 5331-00-803-4920
FSC Code: 5331
MPN: E8777211