The Gasket, cataloged under National Stock Number 5330-01-491-0741, 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 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-491-0741 |
| Primary Part Number | 167-6985306 PART 53 |
| Item Name | Gasket |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Thickness | 0.022 INCHES NOMINAL IN |
| Style Designator | CIRCULAR |
| Material Document and Classification | QQ-C-576 CR SOFT ANLD FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | SOLID SINGLE OR COMPOSITION |
| Outside Diameter | 4.000 INCHES NOMINAL IN |
| Aperture Diameter | 3.310 INCHES NOMINAL IN |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 167-6985306 PART 53 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 25-30-0022 | 5/2 Secondary reference U.S. Government activity |
| H542-1701 PART 53 | 5/2 Secondary reference U.S. Government activity |
NSN 5330-01-491-0741 is a Gasket, manufactured by Naval Sea Systems Command, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-491-0741 has 1 manufacturer part number on file: 167-6985306 PART 53 (Naval Sea Systems Command).
Key specifications for 167-6985306 PART 53: Cross-Sectional Thickness: 0.022 INCHES NOMINAL IN; Style Designator: CIRCULAR; Material Document and Classification: QQ-C-576 CR SOFT ANLD FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: SOLID SINGLE OR COMPOSITION. 7 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.