Asbestos braided packing with PTFE without oil Braided asbestos yarns impregnated with PTFE dispersion . Asbestos braided packing with PTFE without oil Braided asbestos yarns impregnated with PTFE dispersion . It is a flexible, resilient,homogeneous and compact packing .Used in pumps and valves for various kindsof chemicals (acid, alkali, oil, steam, ammonia, etc),such as sealing stuffingboxes on ...