The O-Ring, cataloged under National Stock Number 5331-00-542-1013, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is The Walworth Company. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-542-1013 |
| Primary Part Number | 4DP2081APC16 3-4IN |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | The Walworth Company |
| Status | ACTIVE |
| Cross-Sectional Height | 0.250 INCHES NOMINAL IN |
| Center Hole Diameter | 0.500 INCHES NOMINAL IN |
| 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 |
|---|---|
| 4DP2081APC16 3-4IN PRIMARY | The Walworth Company (USA) |
| 4DP2079APC16X3-4 | The Walworth Company (USA) |
| 4DP2079-1APC16X3-4 | The Walworth Company (USA) |
NSN 5331-00-542-1013 is a O-Ring, manufactured by The Walworth Company, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-542-1013 has 3 manufacturer part numbers on file: 4DP2081APC16 3-4IN (The Walworth Company), 4DP2079APC16X3-4 (The Walworth Company), 4DP2079-1APC16X3-4 (The Walworth Company).
Key specifications for 4DP2081APC16 3-4IN: Cross-Sectional Height: 0.250 INCHES NOMINAL IN; Special Features: IMPREGNATED W/MINERAL OIL AND SURFACE COATED W/GRAPHITE; Center Hole Diameter: 0.500 INCHES NOMINAL IN. 2 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.