Lenpure Ozone Aging Test Chamber Can be used to test rubber products with static tensile deformation, such as vulcanized rubber, thermoplastic rubber, cable insulating bush; expose the test specimens to the sealed air in the test chamber without light and with constant ozone concentration and constant temperature according to predetermined time, and then observe the cracks on test specimens' surface and the degree of change of other properties to evaluate the rubber's ozone aging resistance properties.