The use of 250 ℃ high temperature resistance of red and high temperature silicone rubber 350-400 ℃ black high temperature inorganic glue due to the impact of physical properties of the glue (fluidity too bad), so 250 ℃ H13 high efficiency filter H12-H13 high efficiency between the actual filtration; 350-400 ℃ H13 high temperature and high efficiency filter The actual filtration efficiency between H11-H12.
