The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-501-1397, 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 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-501-1397 |
| Primary Part Number | 342-7067321-160 |
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Height | 0.117 INCHES NOMINAL IN |
| Material Document and Classification | 81364/ASTM-D3293 TY II S/S BY ASTM-D3294 TY II ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | SOLID |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE |
| 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 |
|---|---|
| 342-7067321-160 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H643-7002-160 | 5/2 Secondary reference U.S. Government activity |
NSN 5330-01-501-1397 is a Back-Up Ring,preformed Packing, manufactured by Naval Sea Systems Command, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-501-1397 has 1 manufacturer part number on file: 342-7067321-160 (Naval Sea Systems Command).
Key specifications for 342-7067321-160: Cross-Sectional Height: 0.117 INCHES NOMINAL IN; Material Document and Classification: 81364/ASTM-D3293 TY II S/S BY ASTM-D3294 TY II ASSN STD SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: SOLID; Special Features: BACK-UP RING FOR O-RING 16.455ID X 0.275 CROSS SECTION. 4 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.