It is made of multi-ply fiberglass roving yarn treated with ptfe after high twist compound. It features high tensile strength, good sewing property and high temperature resistance. It widely used in sewing high temperature weave. Application: --Used for sealing and insulating products --Sewing safety clothing, gloves, welding and fire blankets. Specification: Item Filament dia. (¦Ì) Direction of twist Turn per meter (min.) Coating material Tensile strength (N, min.) Thread diameter (mm, +/-0.05) Color 14tex x 12ply 5.5 Z 280 PTFE 95 0.38 golden or off-white 14tex x 16ply 5.5 Z 280 PTFE 105 0.46