The O-Ring, cataloged under National Stock Number 5331-00-518-3631, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Raytheon Company Dba Raytheon Co. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5331-00-518-3631 |
| Primary Part Number | 287MR027P001 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Cross-Sectional Height | 0.062 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.745 INCHES MINIMUM AND 0.755 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 |
|---|---|
| 287MR027P001 | Raytheon Company (USA) |
| 287MR027P001 PRIMARY | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| 287MR027P001 | 5/9 Secondary reference Raytheon Company Div Corp |
NSN 5331-00-518-3631 is a O-Ring, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-518-3631 has 2 manufacturer part numbers on file: 287MR027P001 (Raytheon Company), 287MR027P001 (Raytheon Company Dba Raytheon Co).
Key specifications for 287MR027P001: Cross-Sectional Height: 0.062 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN; Center Hole Diameter: 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN; 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.