The O-Ring, cataloged under National Stock Number 5331-00-756-9083, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5331-00-756-9083 |
| Primary Part Number | 814546-21 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Center Hole Diameter | 4.094 INCHES MINIMUM AND 4.124 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 |
|---|---|
| 814546-21 | Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA) |
| 814546-21 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| 814546-21 | Houghton International Inc. (USA) |
| 814546-21 PRIMARY | L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West (USA) |
| Reference | Meaning |
|---|---|
| 814546-21 | 5/2 Secondary reference U.S. Government activity |
NSN 5331-00-756-9083 is a O-Ring, manufactured by L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-756-9083 has 4 manufacturer part numbers on file: 814546-21 (Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters), 814546-21 (Lockheed Martin Corporation Div Rms - Mitchel Field), 814546-21 (Houghton International Inc.), 814546-21 (L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West).
Key specifications for 814546-21: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 4.094 INCHES MINIMUM AND 4.124 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.