The Back-Up Ring,preformed Packing, cataloged under National Stock Number 5330-01-499-9913, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corp Div O-Ring Division. 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 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-499-9913 |
| Primary Part Number | N0300 8-263 |
| Item Name | Back-Up Ring,preformed Packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| 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 | 7.504 INCHES NOMINAL IN |
| Center Hole Diameter | 7.268 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 |
|---|---|
| N0300 8-263 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 8-263 N300-90 | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 924916 | L3 Technologies, Inc. Div L3 Keo (USA) |
NSN 5330-01-499-9913 is a Back-Up Ring,preformed Packing, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-499-9913 has 3 manufacturer part numbers on file: N0300 8-263 (Parker-Hannifin Corp Div O-Ring Division), 8-263 N300-90 (Parker-Hannifin Corp Div O-Ring Division), 924916 (L3 Technologies, Inc. Div L3 Keo).
2 possible matches (shared part number, not a government interchangeability claim): 5340-01-719-7634, 5340-01-729-7249. Verify interchangeability with system specifications before substitution.
Key specifications for N0300 8-263: 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.