The O-Ring, cataloged under National Stock Number 5331-00-291-1989, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-291-1989 |
| Primary Part Number | 6766430 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Center Hole Diameter | 8.329 INCHES MINIMUM AND 8.389 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7708793 | Parker Hannifin Corporation Div O-Ring Division (USA) |
| 7708793 | Acushnet Rubber Company, Inc. Dba Precix (USA) |
| 6766430 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 7708793 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 7708793 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 6766430 PRIMARY | General Motors Corp (USA) |
| 7708793 | Atlantic India Rubber Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 5330002911989 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 5330002911989 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 7708793 | 5/2 Secondary reference U.S. Government activity |
| 7708793 | 5/9 Secondary reference Hutchinson Seal Corporation |
NSN 5331-00-291-1989 is a O-Ring, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-291-1989 has 7 manufacturer part numbers on file: 7708793 (Parker Hannifin Corporation Div O-Ring Division), 7708793 (Acushnet Rubber Company, Inc. Dba Precix), 6766430 (Allison Transmission Inc Dba Allison Transmission, Inc), 7708793 (Parker-Hannifin Corp Div O-Ring Division), 7708793 (U S Army Tank Automotive Command Amsta-Im-Mm) and 2 more.
Key specifications for 6766430: Cross-Sectional Height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Center Hole Diameter: 8.329 INCHES MINIMUM AND 8.389 INCHES MAXIMUM IN; End Item Identification: M-88 SERIES RECOVERY VEHICLE;FULL-TRACKED MEDIUM RECOVERY VEHICLE; RECOVERY VEHICLE FU; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.