Physical character: made by continuous vulcanizing press with high quality closed cell or open cell silicone rubber and inimitable sponge technique, it is good performance of high temperature resistant, aging resistant, ozone resistant, heat insulation, fuel oil resistance, lubes resistance, no smell and wear well, high compressibility and low compression set over a wide working temperature range, good acoustic and thermal insulation properties. Apply to -60°C - +200°C protect and heat insulation for long term continuous use, -70°C - +260°C for intermittent use on all kinds of ironing table etc.