The Gasket, cataloged under National Stock Number 5330-00-413-4857, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Dresser, Llc. 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 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 | 5330-00-413-4857 |
| Primary Part Number | B1339 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Dresser, Llc |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.031 INCHES NOMINAL IN |
| Side Radius From Gasket Center | 0.938 INCHES NOMINAL IN |
| Style Designator | NON-CIRCULAR |
| Material Document and Classification | MIL-G-12803,+1252-A MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Aperture Diameter | 1.250 INCHES NOMINAL IN |
| Bolt Hole Quantity | 2 |
| Bolt Circle Diameter | 2.375 INCHES NOMINAL IN |
| Outside Corner Radius | 0.344 INCHES NOMINAL IN |
| Material | ASBESTOS AND RUBBER CHLOROPRENE CLASS CR OVERALL |
| Hole Diameter | 0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| 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 |
|---|---|
| B1339 PRIMARY | Dresser, Llc (USA) |
NSN 5330-00-413-4857 is a Gasket, manufactured by Dresser, Llc, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-413-4857 has 1 manufacturer part number on file: B1339 (Dresser, Llc).
1 possible match (shared part number, not a government interchangeability claim): 7025-01-565-8959. Verify interchangeability with system specifications before substitution.
Key specifications for B1339: Cross-Sectional Thickness: 0.031 INCHES NOMINAL IN; Side Radius From Gasket Center: 0.938 INCHES NOMINAL IN; Style Designator: NON-CIRCULAR; Material Document and Classification: MIL-G-12803,+1252-A MIL SPEC ALL MATERIAL RESPONSES 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.