The Seal,plain Encased, cataloged under National Stock Number 5330-01-260-5637, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Calgon Carbon Uv Technologies Llc Dba Hyde Marine. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | Seal,plain Encased |
| FSC / FSG | 5330 — Packing and Gasket Materials (FSG 53) |
| Manufacturers | Calgon Carbon Uv Technologies Llc Dba Hyde Marine (CAGE 29899) |
| Parameter | Value |
|---|---|
| NSN | 5330-01-260-5637 |
| Primary Part Number | 304423 |
| Item Name | Seal,plain Encased |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Calgon Carbon Uv Technologies Llc Dba Hyde Marine |
| 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 |
|---|---|
| 304423 PRIMARY | Calgon Carbon Uv Technologies Llc Dba Hyde Marine (USA) |
| Reference | Meaning |
|---|---|
| 21301 SEQUENCE 43.1 | 5/9 Secondary reference Calgon Carbon Uv Technologies Llc Dba Hyde Marine |
NSN 5330-01-260-5637 is a Seal,plain Encased, manufactured by Calgon Carbon Uv Technologies Llc Dba Hyde Marine, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-260-5637 has 1 manufacturer part number on file: 304423 (Calgon Carbon Uv Technologies Llc Dba Hyde Marine).
1 possible match (shared part number, not a government interchangeability claim): 5940-01-647-2779. 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.