The Gasket, cataloged under National Stock Number 5330-00-998-3258, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5330-00-998-3258 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Cross-Sectional Thickness | 0.165 INCHES NOMINAL IN |
| Gage Ring Thickness | 0.122 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN |
| Hardness Rating | 55.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL |
| Material Document and Classification | QQ-A-250/11 FED SPEC 1ST MATERIAL RESPONSE AND MIL-R-25988,TY 1,CL 1,GR 60 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-R-25988,TY1,CL 1,GR 70 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | METAL AND SYNTHETIC RUBBER |
| Elongation Percentage | 125 MAXIMUM |
| Bolt Hole Quantity | 4 |
| Center to Center Distance Between Bolt Holes Along Length | 1.495 INCHES MINIMUM AND 1.505 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN |
| Surface Treatment | ANODIZE OVERALL |
| Center to Center Distance Between Bolt Holes Along Width | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM LOCATION NOT OTHERWISE SPECIFIED IN |
| Material | ALUMINUM ALLOY 6061 AND RUBBER FLUOROSILICONE CLASS FQ OVERALL |
| Hole Diameter | 0.228 INCHES MINIMUM AND 0.234 INCHES MAXIMUM 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 |
| Reference | Meaning |
|---|---|
| 648689 | 5/9 Secondary reference U.S. Government activity |
| BA3969 | 3/2 Design control — primary reference U.S. Government activity |
| C445 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5330-00-998-3258 is a Gasket, classified under FSC 5330, Packing and Gasket Materials. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 2910-01-682-2205. Verify interchangeability with system specifications before substitution.
Key specifications for 5330-00-998-3258: Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Cross-Sectional Thickness: 0.165 INCHES NOMINAL IN; Gage Ring Thickness: 0.122 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN; Hardness Rating: 55.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL. 13 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.