The Retainer,packing, cataloged under National Stock Number 5330-01-143-7423, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Dover Resources Inc Dba C. Lee Cook Div. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Retainer,packing |
| FSC / FSG | 5330 — Packing and Gasket Materials (FSG 53) |
| Manufacturers | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (CAGE 830Q4); Dover Resources Inc Dba C. Lee Cook Div (CAGE 60251) |
| Parameter | Value |
|---|---|
| NSN | 5330-01-143-7423 |
| Primary Part Number | W-16577 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Dover Resources Inc Dba C. Lee Cook Div |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| 8956B | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| W-16577 PRIMARY | Dover Resources Inc Dba C. Lee Cook Div (USA) |
| Reference | Meaning |
|---|---|
| W-16577 | 5/9 Secondary reference Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent |
| 8956B | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 8956B | 5/9 Secondary reference U.S. Government activity |
NSN 5330-01-143-7423 is a Retainer,packing, manufactured by Dover Resources Inc Dba C. Lee Cook Div, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-143-7423 has 2 manufacturer part numbers on file: 8956B (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), W-16577 (Dover Resources Inc Dba C. Lee Cook Div).
Possible hazard — SDS may be required (DLA HMIC P). 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.