The Gasket, cataloged under National Stock Number 5330-01-643-9870, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5330-01-643-9870 |
| Primary Part Number | 845-7526221-11X1-08 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.060 INCHES NOMINAL IN |
| Inside Corner Radius | 0.130 INCHES NOMINAL IN |
| Outside Edge to Inside Edge Smallest Distance Along Width | 2.190 INCHES NOMINAL IN |
| Style Designator | NON-CIRCULAR |
| Material Document and Classification | 3208 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Aperture Width | 4.880 INCHES NOMINAL IN |
| Aperture Length | 23.68 INCHES NOMINAL IN |
| Bolt Hole Quantity | 18 |
| Outside Edge to Inside Edge Smallest Distance Along Length | 3.030 INCHES NOMINAL IN |
| Center to Center Distance Between Bolt Holes Along Length | 3.100 INCHES NOMINAL ALL HOLES IN |
| Center to Center Distance Between Bolt Holes Along Width | 2.760 INCHES MINIMUM AND 3.110 INCHES MAXIMUM ALL HOLES IN |
| Outside Corner Radius | 2.31 INCHES NOMINAL IN |
| Material | RUBBER FLUOROCARBON CLASS FPM OVERALL |
| Lubrication Material Document and Classification | 50433 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Hole Diameter | 1.060 INCHES NOMINAL ALL HOLES 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 |
|---|---|
| 845-7526221-11X1-08 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 7526221 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5330-01-643-9870 is a Gasket, manufactured by Naval Sea Systems Command, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-643-9870 has 1 manufacturer part number on file: 845-7526221-11X1-08 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-643-9975. Verify interchangeability with system specifications before substitution.
Key specifications for 845-7526221-11X1-08: Cross-Sectional Thickness: 0.060 INCHES NOMINAL IN; Inside Corner Radius: 0.130 INCHES NOMINAL IN; Outside Edge to Inside Edge Smallest Distance Along Width: 2.190 INCHES NOMINAL IN; Style Designator: NON-CIRCULAR. 15 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.