The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-503-6212, 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 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5330-01-503-6212 |
| Primary Part Number | 6392757 FIND 39 |
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Temp Rating | -15.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.050 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN |
| Hardness Rating | 90.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | SAE AMS-R-83248, TY 1, CL 2; AMS7259 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | CONTOURED FACE SOLID |
| Peripheral Diameter | 0.557 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| 8-110 V0709-90 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 6392757 FIND 39 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| 6392757 FIND 39 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 8-110-V0709 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 8-110-V0709-90 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5330-01-503-6212 is a Back-Up Ring,preformed Packing, manufactured by Naval Sea Systems Command, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-503-6212 has 3 manufacturer part numbers on file: 8-110 V0709-90 (Parker-Hannifin Corp Div O-Ring Division), 6392757 FIND 39 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 6392757 FIND 39 (Naval Sea Systems Command).
Key specifications for 6392757 FIND 39: Temp Rating: -15.0 FAHRENHEIT AND 400.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.050 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN; Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: SAE AMS-R-83248, TY 1, CL 2; AMS7259 ASSN STD SINGLE MATERIAL RESPONSE. 8 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.