The O-Ring, cataloged under National Stock Number 5331-01-665-2972, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Birdon America Inc. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-665-2972 |
| Primary Part Number | 9751K121 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Birdon America Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.097 INCHES NOMINAL IN |
| Outside Diameter | 0.949 INCHES NOMINAL IN |
| Color | BLACK |
| Center Hole Diameter | 0.755 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE NITRILE |
| 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 |
|---|---|
| 9751K121 PRIMARY | Birdon America Inc (USA) |
NSN 5331-01-665-2972 is a O-Ring, manufactured by Birdon America Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-665-2972 has 1 manufacturer part number on file: 9751K121 (Birdon America Inc).
Key specifications for 9751K121: Cross-Sectional Height: 0.097 INCHES NOMINAL IN; Outside Diameter: 0.949 INCHES NOMINAL IN; Color: BLACK; Special Features: FITS 5/8 TUBE OD. 5 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.