The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-499-9896, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is L3 Technologies, Inc. Div L3 Keo. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-499-9896 |
| Primary Part Number | 8-260-N300-90 |
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | ACTIVE |
| Temp Rating | -40.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.050 INCHES NOMINAL IN |
| Hardness Rating | 90.0 SHORE DUROMETER A NOMINAL |
| Material Document and Classification | (92697)NO300-90 BUNA-N MFR REF SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | CONTOURED FACE SOLID |
| Peripheral Diameter | 6.754 INCHES NOMINAL IN |
| Center Hole Diameter | 6.518 INCHES NOMINAL IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| 8-260-N300-90 | L3 Technologies, Inc. Div L3 Keo (USA) |
| Reference | Meaning |
|---|---|
| 924915 | 5/9 Secondary reference L3 Technologies, Inc. Div L3 Keo |
| N0300 8-260 | 3/9 Design control — primary reference Parker-Hannifin Corp Div O-Ring Division |
| 8-260 N300-90 | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
NSN 5330-01-499-9896 is a Back-Up Ring,preformed Packing, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-499-9896 has 1 manufacturer part number on file: 8-260-N300-90 (L3 Technologies, Inc. Div L3 Keo).
Key specifications for 8-260-N300-90: Temp Rating: -40.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.050 INCHES NOMINAL IN; Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL; Material Document and Classification: (92697)NO300-90 BUNA-N MFR REF 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.