The Gasket and Ring Assembly, cataloged under National Stock Number 4420-01-211-4603, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Boyd Corporation (woburn) Inc. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4420-01-211-4603 |
| Primary Part Number | 503474 |
| Item Name | Gasket and Ring Assembly |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Boyd Corporation (woburn) Inc |
| Status | ACTIVE |
| General Characteristics Item Description | NEOPRENE GASKET RIVETED TO ALUMINUM RING; 17.188 IN. ID; 21.188 IN. OD 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 |
|---|---|
| 503474 PRIMARY | Boyd Corporation (woburn) Inc (USA) |
NSN 4420-01-211-4603 is a Gasket and Ring Assembly, manufactured by Boyd Corporation (woburn) Inc, classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-211-4603 has 1 manufacturer part number on file: 503474 (Boyd Corporation (woburn) Inc).
Key specifications for 503474: General Characteristics Item Description: NEOPRENE GASKET RIVETED TO ALUMINUM RING; 17.188 IN. ID; 21.188 IN. OD IN. 1 specification is 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.