The Gasket, cataloged under National Stock Number 5330-01-407-3961, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is L3 Technologies, Inc. Div L3 Keo. Government technical data includes 3 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-407-3961 |
| Primary Part Number | 056669 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | ACTIVE |
| Hardness Rating | 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL |
| Material Document and Classification | MIL-R-6855, CLASS 1, GRADE 60 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| 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 |
NSN 5330-01-407-3961 is a Gasket, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-407-3961 has 2 manufacturer part numbers on file: 056669 (Mueller Die Cut Solutions, Llc Dba Sur-Seal, Llc), 056669 (L3 Technologies, Inc. Div L3 Keo).
1 possible match (shared part number, not a government interchangeability claim): 4710-01-689-0432. Verify interchangeability with system specifications before substitution.
Key specifications for 056669: Hardness Rating: 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL; Material Document and Classification: MIL-R-6855, CLASS 1, GRADE 60 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Overall Length: 10.000 INCHES NOMINAL IN; Overall Width: 7.275 INCHES NOMINAL IN. 3 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.