The O-Ring, cataloged under National Stock Number 5331-00-251-4007, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-251-4007 |
| Primary Part Number | 1401418 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN |
| Center Hole Diameter | 5.464 INCHES MINIMUM AND 5.510 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 1401418 PRIMARY | Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 161 | 3/1 Design control — primary reference Parker Hannifin Corporation Div O-Ring Division |
NSN 5331-00-251-4007 is a O-Ring, manufactured by Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-251-4007 has 1 manufacturer part number on file: 1401418 (Mechanical Equipment Company, Inc. Dba Mechanical Equipment Co Inc).
Key specifications for 1401418: Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Center Hole Diameter: 5.464 INCHES MINIMUM AND 5.510 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 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.