The Packing,preformed, cataloged under National Stock Number 5330-00-582-2525, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-582-2525 |
| Primary Part Number | B40440 |
| Item Name | Packing,preformed |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| Cross-Sectional Height | 0.375 INCHES NOMINAL IN |
| Inner Groove Depth | 0.940 INCHES NOMINAL IN |
| Hardness Rating | 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL |
| Material Document and Classification | AMS 3238 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Rim Surface Width | 0.312 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | SPECIAL |
| Angle | 15.0 DEGREES NOMINAL |
| Peripheral Diameter | 4.000 INCHES MINIMUM AND 4.016 INCHES MAXIMUM IN |
| Inner Groove Width | 0.188 INCHES NOMINAL IN |
| Center Hole Diameter | 3.625 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 |
|---|---|
| B40440 | Eaton Aerospace, Llc Dba Jackson South (USA) |
| Reference | Meaning |
|---|---|
| 320182REVA | 3/2 Design control — primary reference U.S. Government activity |
NSN 5330-00-582-2525 is a Packing,preformed, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-582-2525 has 1 manufacturer part number on file: B40440 (Eaton Aerospace, Llc Dba Jackson South).
Key specifications for B40440: Cross-Sectional Height: 0.375 INCHES NOMINAL IN; Inner Groove Depth: 0.940 INCHES NOMINAL IN; Hardness Rating: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL; Material Document and Classification: AMS 3238 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 11 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.