The Seal,plain, cataloged under National Stock Number 5330-00-439-2567, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Seal,plain |
| FSC / FSG | 5330 — Packing and Gasket Materials (FSG 53) |
| Manufacturers | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (CAGE 61208); Marine & Industrial Transmissions Ltd (CAGE U2621) |
| Parameter | Value |
|---|---|
| NSN | 5330-00-439-2567 |
| Primary Part Number | M1904F |
| Item Name | Seal,plain |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| 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 |
|---|---|
| M1904F PRIMARY | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA) |
| M1904F | Marine & Industrial Transmissions Ltd (GBR) |
| Reference | Meaning |
|---|---|
| M1904F | 5/9 Secondary reference Twin Disc International S a |
| D37021 | 5/9 Secondary reference Cnh Industrial America Llc Dba Cnh America |
NSN 5330-00-439-2567 is a Seal,plain, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-439-2567 has 2 manufacturer part numbers on file: M1904F (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), M1904F (Marine & Industrial Transmissions Ltd).
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.