TC-5050 A/B is a room temperature, addition/platinum curing silicone rubber designed for mold making, encapsulation applications, pressure pads, gaskets, and various types of parts.  It is also used to make molds for casting low melting metals into.  With the use of talc powder as an interface the TC-5050 A/B has been used in production with cast metal temperatures running 650°F (344°C) and has been subject to temperatures up to 850°F (454°C) for making a limited number of casts.  With the ability to withstand high temperatures the TC-5050 A/B works very well as a mask for metal spraying and welding operations.