The Packing Ring, cataloged under National Stock Number 4820-01-121-2450, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fisher Controls 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Packing Ring |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Fisher Controls Co Inc (CAGE 22508) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-121-2450 |
| Primary Part Number | 1J873335072 |
| Item Name | Packing Ring |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Fisher Controls Co Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 42A3444 PIECE 33 | Fisher Controls Co Inc (USA) |
| 1J873335072 PRIMARY | Fisher Controls Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 42A3444 | D/9 Drawing number reference only Fisher Controls Co Inc |
NSN 4820-01-121-2450 is a Packing Ring, manufactured by Fisher Controls Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-121-2450 has 2 manufacturer part numbers on file: 42A3444 PIECE 33 (Fisher Controls Co Inc), 1J873335072 (Fisher Controls Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-333-1276. Verify interchangeability with system specifications before substitution.
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.