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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.

5331-01-372-3867 (FF9855-16)

NIIN: 01-372-3867
In stock
NSN: 5331-01-372-3867
FSC Code: 5331
MPN: FF985516

5331-00-257-7396 (6871091-20)

NIIN: 00-257-7396
In stock
NSN: 5331-00-257-7396
FSC Code: 5331
MPN: 687109120

5331-01-363-7074 (FF9855-21)

NIIN: 01-363-7074
In stock
NSN: 5331-01-363-7074
FSC Code: 5331
MPN: FF985521

5331-01-371-2035 (FF9855-14)

NIIN: 01-371-2035
In stock
NSN: 5331-01-371-2035
FSC Code: 5331
MPN: FF985514

5331-01-363-7073 (FF9855-18)

NIIN: 01-363-7073
In stock
NSN: 5331-01-363-7073
FSC Code: 5331
MPN: FF985518

5331-01-458-8349 (FF9446-18)

NIIN: 01-458-8349
In stock
NSN: 5331-01-458-8349
FSC Code: 5331
MPN: FF944618

5331-01-388-3727 (8-74-80-09-059)

NIIN: 01-388-3727
In stock
NSN: 5331-01-388-3727
FSC Code: 5331
MPN: 8748009059

5331-01-376-9629 (FF9855-12)

NIIN: 01-376-9629
In stock
NSN: 5331-01-376-9629
FSC Code: 5331
MPN: FF985512

5331-01-371-5119 (VS-1087-4)

NIIN: 01-371-5119
In stock
NSN: 5331-01-371-5119
FSC Code: 5331
MPN: VS10874

5331-01-526-0025 (2HL549)

NIIN: 01-526-0025
In stock
NSN: 5331-01-526-0025
FSC Code: 5331
MPN: 2HL549

5331-01-358-5432 (2HL354)

NIIN: 01-358-5432
In stock
NSN: 5331-01-358-5432
FSC Code: 5331
MPN: 2HL354

5331-01-498-4278 (6022020000)

NIIN: 01-498-4278
In stock
NSN: 5331-01-498-4278
FSC Code: 5331
MPN: 6022020000

5331-01-351-2726 (2HG724)

NIIN: 01-351-2726
In stock
NSN: 5331-01-351-2726
FSC Code: 5331
MPN: 2HG724

5331-01-431-6558 (7-755-906003)

NIIN: 01-431-6558
In stock
NSN: 5331-01-431-6558
FSC Code: 5331
MPN: 7755906003

5331-01-418-1040 (7-755-256003)

NIIN: 01-418-1040
In stock
NSN: 5331-01-418-1040
FSC Code: 5331
MPN: 7755256003

5331-01-407-3466 (2HD639)

NIIN: 01-407-3466
In stock
NSN: 5331-01-407-3466
FSC Code: 5331
MPN: 2HD639

5331-01-517-0356 (2HA12)

NIIN: 01-517-0356
In stock
NSN: 5331-01-517-0356
FSC Code: 5331
MPN: 2HA12

5331-01-512-0045 (2HA15)

NIIN: 01-512-0045
In stock
NSN: 5331-01-512-0045
FSC Code: 5331
MPN: 2HA15

5331-01-515-0690 (Y00023234)

NIIN: 01-515-0690
In stock
NSN: 5331-01-515-0690
FSC Code: 5331
MPN: Y00023234

5331-01-359-2151 (2GL757)

NIIN: 01-359-2151
In stock
NSN: 5331-01-359-2151
FSC Code: 5331
MPN: 2GL757

5331-01-357-0846 (2GL753)

NIIN: 01-357-0846
In stock
NSN: 5331-01-357-0846
FSC Code: 5331
MPN: 2GL753

5331-01-040-4050 (6867945-09)

NIIN: 01-040-4050
In stock
NSN: 5331-01-040-4050
FSC Code: 5331
MPN: 686794509

5331-01-566-7831 (2GL756)

NIIN: 01-566-7831
In stock
NSN: 5331-01-566-7831
FSC Code: 5331
MPN: 2GL756

5331-01-342-9027 (2GL593)

NIIN: 01-342-9027
In stock
NSN: 5331-01-342-9027
FSC Code: 5331
MPN: 2GL593

5331-01-522-8307 (Y00023236)

NIIN: 01-522-8307
In stock
NSN: 5331-01-522-8307
FSC Code: 5331
MPN: Y00023236

5331-01-354-4160 (SA75502787)

NIIN: 01-354-4160
In stock
NSN: 5331-01-354-4160
FSC Code: 5331
MPN: SA75502787

5331-00-118-4156 (68-667)

NIIN: 00-118-4156
In stock
NSN: 5331-00-118-4156
FSC Code: 5331
MPN: 68667

5331-00-453-7564 (68-649)

NIIN: 00-453-7564
In stock
NSN: 5331-00-453-7564
FSC Code: 5331
MPN: 68649

5331-01-434-7269 (2FM1013)

NIIN: 01-434-7269
In stock
NSN: 5331-01-434-7269
FSC Code: 5331
MPN: 2FM1013

5331-01-425-3438 (427682)

NIIN: 01-425-3438
In stock
NSN: 5331-01-425-3438
FSC Code: 5331
MPN: 427682

5331-01-280-7496 (68575P0P7)

NIIN: 01-280-7496
In stock
NSN: 5331-01-280-7496
FSC Code: 5331
MPN: 68575P0P7

5331-01-280-7495 (68569P0P7)

NIIN: 01-280-7495
In stock
NSN: 5331-01-280-7495
FSC Code: 5331
MPN: 68569P0P7

5331-01-246-9624 (68570P0P7-3)

NIIN: 01-246-9624
In stock
NSN: 5331-01-246-9624
FSC Code: 5331
MPN: 68570P0P73

5331-01-012-2533 (68-559)

NIIN: 01-012-2533
In stock
NSN: 5331-01-012-2533
FSC Code: 5331
MPN: 68559

5331-01-371-2048 (2D3-03736)

NIIN: 01-371-2048
In stock
NSN: 5331-01-371-2048
FSC Code: 5331
MPN: 2D303736

5331-00-948-0528 (68-547)

NIIN: 00-948-0528
In stock
NSN: 5331-00-948-0528
FSC Code: 5331
MPN: 68547

5331-00-420-8226 (68-527)

NIIN: 00-420-8226
In stock
NSN: 5331-00-420-8226
FSC Code: 5331
MPN: 68527

5331-01-045-5602 (6851501-160)

NIIN: 01-045-5602
In stock
NSN: 5331-01-045-5602
FSC Code: 5331
MPN: 6851501160

5331-01-095-3182 (68-504)

NIIN: 01-095-3182
In stock
NSN: 5331-01-095-3182
FSC Code: 5331
MPN: 68504

5331-00-224-1435 (68505P0Q1)

NIIN: 00-224-1435
In stock
NSN: 5331-00-224-1435
FSC Code: 5331
MPN: 68505P0Q1

5331-01-219-7231 (684V607)

NIIN: 01-219-7231
In stock
NSN: 5331-01-219-7231
FSC Code: 5331
MPN: 684V607

5331-01-485-5991 (2CD521)

NIIN: 01-485-5991
In stock
NSN: 5331-01-485-5991
FSC Code: 5331
MPN: 2CD521

5331-00-243-7519 (6843333-264)

NIIN: 00-243-7519
In stock
NSN: 5331-00-243-7519
FSC Code: 5331
MPN: 6843333264

5331-00-143-7245 (6843333-140)

NIIN: 00-143-7245
In stock
NSN: 5331-00-143-7245
FSC Code: 5331
MPN: 6843333140

5331-00-483-2737 (6843333-349)

NIIN: 00-483-2737
In stock
NSN: 5331-00-483-2737
FSC Code: 5331
MPN: 6843333349

5331-00-143-7227 (6843333-123)

NIIN: 00-143-7227
In stock
NSN: 5331-00-143-7227
FSC Code: 5331
MPN: 6843333123

5331-00-004-6391 (6843333-252)

NIIN: 00-004-6391
In stock
NSN: 5331-00-004-6391
FSC Code: 5331
MPN: 6843333252

5331-00-241-1168 (6843333-253)

NIIN: 00-241-1168
In stock
NSN: 5331-00-241-1168
FSC Code: 5331
MPN: 6843333253