The Gasket, cataloged under National Stock Number 5330-01-657-2743, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Spectral Labs Incorporated Dba Spectral Labs. Government technical data includes 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-657-2743 |
| Primary Part Number | 8691525 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Spectral Labs Incorporated Dba Spectral Labs |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN |
| Outside Edge to Inside Edge Smallest Distance Along Width | 0.390 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN |
| Style Designator | NON-CIRCULAR |
| Material Document and Classification | MIL-R-6855, CLASS 2, TYPE B, GRADE 60, ADHESIVE BACKED MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Aperture Width | 4.190 INCHES MINIMUM AND 4.210 INCHES MAXIMUM IN |
| Outside Corner Bevel Length Along Width | 0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN |
| Aperture Length | 6.190 INCHES MINIMUM AND 6.210 INCHES MAXIMUM IN |
| Outside Corner Bevel Length Along Length | 0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN |
| Bolt Hole Quantity | 10 |
| Outside Edge to Inside Edge Smallest Distance Along Length | 0.390 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN |
| Center to Center Distance Between Bolt Holes Along Length | 2.240 INCHES MINIMUM AND 2.260 INCHES MAXIMUM ALL HOLES IN |
| Center to Center Distance Between Bolt Holes Along Width | 2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM ALL HOLES IN |
| Outside Edge to Bolt Hole Center Distance Along Length | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Material | RUBBER NEOPRENE OVERALL |
| Hole Diameter | 0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM ALL HOLES IN |
| Outside Edge to Bolt Hole Center Distance Along Width | 0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM 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 5330-01-657-2743 is a Gasket, manufactured by Spectral Labs Incorporated Dba Spectral Labs, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-657-2743 has 2 manufacturer part numbers on file: 8691525 (Naval Sea Systems Command), 8691525 (Spectral Labs Incorporated Dba Spectral Labs).
Key specifications for 8691525: Cross-Sectional Thickness: 0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN; Outside Edge to Inside Edge Smallest Distance Along Width: 0.390 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN; Style Designator: NON-CIRCULAR; Material Document and Classification: MIL-R-6855, CLASS 2, TYPE B, GRADE 60, ADHESIVE BACKED MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 17 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.