The Packing,preformed, cataloged under National Stock Number 5330-00-679-7974, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 5330-00-679-7974 |
| Primary Part Number | 8756255 |
| Item Name | Packing,preformed |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Cross-Sectional Height | 1.750 INCHES NOMINAL IN |
| Hardness Rating | 25.0 SHORE DUROMETER A MINIMUM AND 35.0 SHORE DUROMETER A MAXIMUM OVERALL |
| Material Document and Classification | MIL-R-1149,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Angle | 7.0 DEGREES NOMINAL |
| Flanged Body Outside Diameter | 2.375 INCHES NOMINAL IN |
| Peripheral Diameter | 3.125 INCHES NOMINAL IN |
| Center Hole Diameter | 2.250 INCHES NOMINAL IN |
| Material | RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR 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 |
|---|---|
| 8756255 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 8756255 | Fnss Savunma Sistemleri Anonim Sirketi (TUR) |
| Reference | Meaning |
|---|---|
| 5330006797974 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 5330PL1429129 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5330-00-679-7974 is a Packing,preformed, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-679-7974 has 2 manufacturer part numbers on file: 8756255 (U S Army Tank Automotive Command Amsta-Im-Mm), 8756255 (Fnss Savunma Sistemleri Anonim Sirketi).
Key specifications for 8756255: Cross-Sectional Height: 1.750 INCHES NOMINAL IN; Hardness Rating: 25.0 SHORE DUROMETER A MINIMUM AND 35.0 SHORE DUROMETER A MAXIMUM OVERALL; Material Document and Classification: MIL-R-1149,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Angle: 7.0 DEGREES NOMINAL. 8 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.