The Retainer,seal, cataloged under National Stock Number 5330-01-203-8257, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Continental Emsco Co Skagit Products Div. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Retainer,seal |
| FSC / FSG | 5330 — Packing and Gasket Materials (FSG 53) |
| Manufacturers | Continental Emsco Co Skagit Products Div (CAGE 55102) |
| Parameter | Value |
|---|---|
| NSN | 5330-01-203-8257 |
| Primary Part Number | D-8639 |
| Item Name | Retainer,seal |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Continental Emsco Co Skagit Products 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 |
|---|---|
| D-8639 PRIMARY | Continental Emsco Co Skagit Products Div (USA) |
| Reference | Meaning |
|---|---|
| 52687-H PIECE 55 | 5/9 Secondary reference Continental Emsco Co Skagit Products Div |
NSN 5330-01-203-8257 is a Retainer,seal, manufactured by Continental Emsco Co Skagit Products Div, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-203-8257 has 1 manufacturer part number on file: D-8639 (Continental Emsco Co Skagit Products Div).
1 possible match (shared part number, not a government interchangeability claim): 6625-01-516-5524. Verify interchangeability with system specifications before substitution.
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.