The Seal and Rings Assembly, cataloged under National Stock Number 1025-01-220-8016, is classified within Federal Supply Class 1025 (Guns, Over 150mm Through 200mm) of the Weapons group. The manufacturer of record is Greene Tweed & Co Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Seal and Rings Assembly |
| FSC / FSG | 1025 — Guns, Over 150mm Through 200mm (FSG 10) |
| Manufacturers | Greene Tweed & Co Inc (CAGE 5F573); Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (CAGE 19200) |
| Parameter | Value |
|---|---|
| NSN | 1025-01-220-8016 |
| Primary Part Number | 121-21800-987-0058 |
| Item Name | Seal and Rings Assembly |
| FSC / FSG | 1025 / 10 — Guns, Over 150mm Through 200mm |
| Manufacturer | Greene Tweed & Co Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 121-21800-987-0058 PRIMARY | Greene Tweed & Co Inc (USA) |
| 12009248 | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
| Reference | Meaning |
|---|---|
| 121-21800-987-0058 | 5/9 Secondary reference Palmetto Inc |
NSN 1025-01-220-8016 is a Seal and Rings Assembly, manufactured by Greene Tweed & Co Inc, classified under FSC 1025, Guns, Over 150mm Through 200mm. Status: active.
NSN 1025-01-220-8016 has 2 manufacturer part numbers on file: 121-21800-987-0058 (Greene Tweed & Co Inc), 12009248 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
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.