MIL-P-24396A

Abstract

This specification covers three types of braided polytetrafluoroethylene (PTFE) yarn packing impregnated with PTFE dispersion. All types of packing are for service on Naval ships when stuffing box temperatures are limited to a maximum of 450 degrees Fahrenheit (&#176;F). <b><u>Intended Use:</u></b> This type is intended for dynamic service and shipboard fluids except superheated steam or other service resulting in packing temperatures of over 450&#176;F oxygen, molten alkaline metals, or fluorochemicals. Pressures should not exceed 150 pounds per square inch (lb/in²) at the packing, and rod or shaft speed should not exceed 1,500 feet per minute (ft/min). This type is intended for static to low speed or intermittent service and shipboard fluids except superheated steam or other services resulting in packing temperature of over 450&#176;F, oxygen, molten alkaline metals, or fluorochemicals. Pressures should not exceed 2,500 lb/in² and rod or shaft speeds should not exceed 25 ft/min. This type is intended for static to low speed or intermittent service against oxygen. Pressures should not exceed 2,500 lb/in² and rod or shaft speed should not exceed 25 ft/min. Packing must be kept absolutely clean and uncontaminated in any way. <br>