The O-Ring, cataloged under National Stock Number 5331-01-278-2022, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is A W Chesterton Co Div Sealing Device Division. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5331-01-278-2022 |
| Primary Part Number | VW-245 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | A W Chesterton Co Div Sealing Device Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN |
| Center Hole Diameter | 4.329 INCHES MINIMUM AND 4.389 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC AND PLASTIC POLYTETRAFLUOROETHYLENE |
| 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 |
|---|---|
| VW-245 PRIMARY | A W Chesterton Co Div Sealing Device Division (USA) |
| Reference | Meaning |
|---|---|
| 3165931 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5331-01-278-2022 is a O-Ring, manufactured by A W Chesterton Co Div Sealing Device Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-278-2022 has 1 manufacturer part number on file: VW-245 (A W Chesterton Co Div Sealing Device Division).
Key specifications for VW-245: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.149 INCHES MAXIMUM IN; Center Hole Diameter: 4.329 INCHES MINIMUM AND 4.389 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC AND PLASTIC POLYTETRAFLUOROETHYLENE. 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.