Sealing strip 1. ozone-resistant, 2. transparent , smooth, soft and flexible, non-toxic tasteless 3. aging resistant Sealing strip1. ozone-resistant,2. transparent , smooth, soft and flexible, non-toxic tasteless3. aging resistant, no deformationSilicone rubber hardness of the national standard as follows: 55 degrees plus or minus 5 degrees, the maximum hardness of 70 degrees can be done. t can ...