AP Services, a product and service brand of Curtiss-Wright, manufactures valve and pump packing products that have the lowest leak rates and friction in the industry. Style 7300 is manufactured from ultra-high purity flexible graphite in a multiple braid construction. A graphite filament is utilized to provide reinforcement and added tensile strength. The graphite filament reinforcement also resists extrusion in high-pressure applications. Style 7300 is manufactured from all graphite products and contains no PTFE. A passive corrosion inhibitor is added to the packing to prevent damage to expensive valve and pump parts. There are no binders, resins or wire present that could cause pump sleeve or valve stem damage. Style 7300 is resilient, compressible, thermally conductive, and fire safe. Because the packing is self-lubricating it requires little or no product lubrication, and is compatible with most fluid mediums. Flexible braided graphite packing provides long life, low maintenance, and leak free operation in most all applications.
Style 7300HD is die-formed Style 7300 packing designed for use as end rings in combination valve packing sets.
Because of this packing’s unique characteristics it can withstand acids, caustics, alkalis, steam, and oil in high temperature applications, and effectively seals all types of pumps, valves, and sootblowers. Style 7300 is available as individual rings, combination sets, and in bulk.
||1,200 ºF in steam
850 ºF in atmosphere
|Maximum Shaft Speed