The Seal,nonmetallic Strip, cataloged under National Stock Number 5330-01-491-0744, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is The Entwistle Company Llc. Government technical data includes 6 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-491-0744 |
| Primary Part Number | EJ-11581 |
| Item Name | Seal,nonmetallic Strip |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | The Entwistle Company Llc |
| Status | ACTIVE |
| Cross-Sectional Height | 0.4688 INCHES NOMINAL IN |
| Style Designator | STRIP |
| Material Document and Classification | MIL-R-900 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-R-3065,SC40B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SQUARE |
| Material | RUBBER BUTADIENE-STYRENE CLASS SBR OR RUBBER CHLOROPRENE CLASS CR OVERALL |
| Construction | SPLIT |
| 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 |
|---|---|
| EJ-11581 PRIMARY | The Entwistle Company Llc (USA) |
| EJ-51251 ITEM 7 | The Entwistle Company Llc (USA) |
NSN 5330-01-491-0744 is a Seal,nonmetallic Strip, manufactured by The Entwistle Company Llc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-491-0744 has 2 manufacturer part numbers on file: EJ-11581 (The Entwistle Company Llc), EJ-51251 ITEM 7 (The Entwistle Company Llc).
Key specifications for EJ-11581: Cross-Sectional Height: 0.4688 INCHES NOMINAL IN; Style Designator: STRIP; Material Document and Classification: MIL-R-900 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-R-3065,SC40B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Overall Length: 161.000 INCHES NOMINAL IN. 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.