Neoprene rubber sheet is a kind of multi-purpose elastomer with good comprehensive performance.It has good tensile strength and excellent physical toughness;good heat resistance, ozone resistance, weather resistance and heat resistance sheet;weather resistance is second to EPDM rubber sheet;good oil and chemical corrosion resistance;neoprene rubber sheet has flame retardancy, no spontaneous combustion, can burn when contacting the flame, self extinguishing from the fire, and the oxygen index is 38-41. The material with an oxygen index of 27 is a flame retardant material, and all rubber sheets containing enough concentration of halogen have flame retardancy.The oxygen index is an indicator to measure the combustion performance of materials. Its definition refers to the low oxygen gas volume required to maintain candle-like combustion in nitrogen and oxygen mixture gases;the oxygen index of neoprene rubber sheet is very high, which is very difficult to burn, second only to fluorine rubber sheet.