The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-592-8137, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-592-8137 |
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Status | ACTIVE |
| Cross-Sectional Shape Style | SOLID |
| Center Hole Diameter | 1.688 INCHES MINIMUM AND 1.693 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 |
| Reference | Meaning |
|---|---|
| S13050-131-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5330-01-592-8137 is a Back-Up Ring,preformed Packing, classified under FSC 5330, Packing and Gasket Materials. Status: active.
Key specifications for 5330-01-592-8137: Cross-Sectional Shape Style: SOLID; Special Features: THICKNESS IS 0.062 MIN AND 0.058 MAX; WIDTH IS 0.087 MIN AND 0.085 MAX; Center Hole Diameter: 1.688 INCHES MINIMUM AND 1.693 INCHES MAXIMUM IN; Part Name Assigned by Controlling Agency: SOLID HEAVY DUTY BACKUP RING. 2 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.