The Gasket, cataloged under National Stock Number 5330-00-012-4977, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 11 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 | 5330-00-012-4977 |
| Primary Part Number | 2105906 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN |
| Hardness Rating | 60.0 SHORE DUROMETER A NOMINAL OVERALL |
| Style Designator | CIRCULAR |
| Material Document and Classification | ZZ-R-765,CL 2B,GR 60 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Outside Diameter | 4.000 INCHES NOMINAL IN |
| Aperture Diameter | 3.438 INCHES NOMINAL IN |
| Bolt Hole Quantity | 8 |
| Bolt Circle Diameter | 3.750 INCHES NOMINAL IN |
| Material | RUBBER SILICONE CLASS Q OVERALL |
| Hole Diameter | 0.136 INCHES MINIMUM AND 0.149 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 |
NSN 5330-00-012-4977 is a Gasket, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-00-012-4977 has 2 manufacturer part numbers on file: 1085980 (Lockheed Martin Corporation Div Rms - Mitchel Field), 2105906 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5945-00-508-3938. Verify interchangeability with system specifications before substitution.
Key specifications for 2105906: Cross-Sectional Thickness: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN; Hardness Rating: 60.0 SHORE DUROMETER A NOMINAL OVERALL; Style Designator: CIRCULAR; Material Document and Classification: ZZ-R-765,CL 2B,GR 60 FED SPEC SINGLE MATERIAL RESPONSE 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.