The Gasket, cataloged under National Stock Number 5330-01-044-4882, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Hutchinson Seal De Mexico Stillman Seal Division Div Stillman Seal,jpr,espa. Government technical data includes 10 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5330-01-044-4882 |
| Primary Part Number | BA6491 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Hutchinson Seal De Mexico Stillman Seal Division Div Stillman Seal,jpr,espa |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE OR MIL-R-25988 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 6.200 INCHES NOMINAL IN |
| Aperture Diameter | 5.400 INCHES NOMINAL IN |
| Elongation Percentage | 125 MAXIMUM |
| Bolt Hole Quantity | 8 |
| Bolt Circle Diameter | 5.230 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OVERALL |
| Material | ALUMINUM ALLOY 6061 OR RUBBER FLUOROSILICONE CLASS FQ OVERALL |
| Hole Diameter | 0.285 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 |
|---|---|
| BA6491 | Hutchinson Seal De Mexico Stillman Seal Division Div Stillman Seal,jpr,espa (MEX) |
| 40535-2 | Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp (USA) |
| Reference | Meaning |
|---|---|
| 5330PL1731189 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 738174 | 3/2 Design control — primary reference U.S. Government activity |
| C407-9 | 7/2 Vendor item drawing reference U.S. Government activity |
| BA6491 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5330-01-044-4882 is a Gasket, manufactured by Hutchinson Seal De Mexico Stillman Seal Division Div Stillman Seal,jpr,espa, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-044-4882 has 2 manufacturer part numbers on file: BA6491 (Hutchinson Seal De Mexico Stillman Seal Division Div Stillman Seal,jpr,espa), 40535-2 (Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp).
1 possible match (shared part number, not a government interchangeability claim): 5995-01-162-0813. Verify interchangeability with system specifications before substitution.
Key specifications for BA6491: Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE OR MIL-R-25988 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 6.200 INCHES NOMINAL IN; Aperture Diameter: 5.400 INCHES NOMINAL IN. 10 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.