The Gasket, cataloged under National Stock Number 5330-00-558-0540, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Automatic Switch Company Dba Asco. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-00-558-0540 |
| Primary Part Number | FV19-919B |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Automatic Switch Company Dba Asco |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 212.0 FAHRENHEIT DEGF |
| Cross-Sectional Thickness | 0.062 INCHES NOMINAL IN |
| Hardness Rating | 35.0 SHORE DUROMETER A MINIMUM AND 45.0 SHORE DUROMETER A MAXIMUM OVERALL |
| Style Designator | NON-CIRCULAR |
| Material Document and Classification | MIL-R-6855,CL 1,GR 40 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | CLOTH AND SYNTHETIC RUBBER, NONMETALLIC MATERIAL |
| Bolt Hole Quantity | 4 |
| Center to Center Distance Between Bolt Holes Along Length | 2.000 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Center to Center Distance Between Bolt Holes Along Width | 1.938 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Outside Edge to Bolt Hole Center Distance Along Length | 0.281 INCHES NOMINAL IN |
| Outside Corner Radius | 0.281 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL |
| Hole Diameter | 0.266 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Outside Edge to Bolt Hole Center Distance Along Width | 0.281 INCHES NOMINAL 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 |
|---|---|
| GV60-017PC15 | Automatic Switch Company Dba Asco (USA) |
| FV19-919B PRIMARY | Automatic Switch Company Dba Asco (USA) |
| AV58-538PC15 | Automatic Switch Company Dba Asco (USA) |
| AV71-019PC35 | Automatic Switch Company Dba Asco (USA) |
| GV76-887PC31 | Automatic Switch Company Dba Asco (USA) |
| AV69-269PC31 | Automatic Switch Company Dba Asco (USA) |
NSN 5330-00-558-0540 is a Gasket, manufactured by Automatic Switch Company Dba Asco, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-558-0540 has 6 manufacturer part numbers on file: GV60-017PC15 (Automatic Switch Company Dba Asco), FV19-919B (Automatic Switch Company Dba Asco), AV58-538PC15 (Automatic Switch Company Dba Asco), AV71-019PC35 (Automatic Switch Company Dba Asco), GV76-887PC31 (Automatic Switch Company Dba Asco) and 1 more.
2 possible matches (shared part number, not a government interchangeability claim): 5330-01-312-9857, 5330-01-381-2051. Verify interchangeability with system specifications before substitution.
Key specifications for FV19-919B: Temp Rating: -65.0 FAHRENHEIT AND 212.0 FAHRENHEIT DEGF; Cross-Sectional Thickness: 0.062 INCHES NOMINAL IN; Hardness Rating: 35.0 SHORE DUROMETER A MINIMUM AND 45.0 SHORE DUROMETER A MAXIMUM OVERALL; Style Designator: NON-CIRCULAR. 14 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.