This material is PTFE coated fiberglass cloth which is 0.12mm thick. Cut into 27x27cm pieces with a hole in the middle. These cut pieces called stovetop burner protectors are designed to protect your gas range area from oil, spills and mess. It is heat or flame resistant, anti chemical agents, corrosion resistant, tear resistant and non stick. Its non stick surface is easy to clean after using. Also the protectors are dishwasher safe.
Its material fiberglass fabric is able to withstand heat below 550℃. PTFE coated fiber glass fabric can be used from -50 to 260℃. PTFE coated fiber glass fabric is FDA approved, food grade, non toxic.