The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-616-2372, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Mastsystem Int'l Oy. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 — Packing and Gasket Materials (FSG 53) |
| Manufacturers | Mastsystem Int'l Oy (CAGE A196G); Tim Price Inc. Dba Tim Price Inc (CAGE 097B0) |
| Parameter | Value |
|---|---|
| NSN | 5330-01-616-2372 |
| Primary Part Number | 303189 |
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Mastsystem Int'l Oy |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 5330-01-616-2372 is a Back-Up Ring,preformed Packing, manufactured by Mastsystem Int'l Oy, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-616-2372 has 2 manufacturer part numbers on file: 303189 (Mastsystem Int'l Oy), 800946 (Tim Price Inc. Dba Tim Price Inc).
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.