The Packing,preformed, cataloged under National Stock Number 5330-01-040-9911, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is C. E. Conover & Co., Inc.. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5330-01-040-9911 |
| Primary Part Number | 8318-7 |
| Item Name | Packing,preformed |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | C. E. Conover & Co., Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN |
| Hardness Rating | 75.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM OVERALL |
| Material Document and Classification | MIL-R-1149,TY 2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | O-RING |
| Center Hole Diameter | 2.369 INCHES MINIMUM AND 2.381 INCHES MAXIMUM IN |
| Material | RUBBER CHLOROPRENE CLASS CR 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 |
|---|---|
| 8318-7 | C. E. Conover & Co., Inc. (USA) |
| Reference | Meaning |
|---|---|
| A-3579-6 | 3/2 Design control — primary reference U.S. Government activity |
| 1273755-1 | 7/2 Vendor item drawing reference Honeywell Intl Inc Defense Avionics Systems |
NSN 5330-01-040-9911 is a Packing,preformed, manufactured by C. E. Conover & Co., Inc., classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-040-9911 has 1 manufacturer part number on file: 8318-7 (C. E. Conover & Co., Inc.).
Key specifications for 8318-7: Cross-Sectional Height: 0.059 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN; Hardness Rating: 75.0 SHORE DUROMETER A MINIMUM AND 85.0 SHORE DUROMETER A MAXIMUM OVERALL; Material Document and Classification: MIL-R-1149,TY 2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: O-RING. 6 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.