The Packing,preformed, cataloged under National Stock Number 5330-01-345-0587, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Greene Tweed & Co Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 5330-01-345-0587 |
| Primary Part Number | 7443MT-987 |
| Item Name | Packing,preformed |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Greene Tweed & Co Inc |
| Status | ACTIVE |
| Temp Rating | -70.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.250 INCHES NOMINAL IN |
| Hardness Rating | 65.0 SHORE DUROMETER A NOMINAL OVERALL |
| Cross-Sectional Shape Style | TEE |
| Peripheral Diameter | 8.000 INCHES NOMINAL IN |
| Center Hole Diameter | 7.500 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7443MT-987 PRIMARY | Greene Tweed & Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 7443MT-987 | 5/9 Secondary reference Palmetto Inc |
| 7D0159M443T-1N | 5/2 Secondary reference U.S. Government activity |
NSN 5330-01-345-0587 is a Packing,preformed, manufactured by Greene Tweed & Co Inc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-345-0587 has 1 manufacturer part number on file: 7443MT-987 (Greene Tweed & Co Inc).
Key specifications for 7443MT-987: Temp Rating: -70.0 FAHRENHEIT AND 275.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.250 INCHES NOMINAL IN; Hardness Rating: 65.0 SHORE DUROMETER A NOMINAL OVERALL; Cross-Sectional Shape Style: TEE. 7 specifications are documented in the U.S. Government catalog.
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.