The high temperature resistance of rubber extrusions is excellent. The rubber extrusion can work for a long time at 200~250 degrees Celsius, and can work for a short time at 300 degrees Celsius. The heat resistance of F246 is slightly better than that of F26. The tensile strength and hardness of rubber extrusions decrease significantly with increasing temperature. The tensile strength and hardness are characterized by a temperature drop below 150 degrees Celsius and a rapid decrease with temperature; between 150 and 260 degrees Celsius, the temperature decreases with a slower rate.
The stability of rubber to hot water depends not only on the bulk material, but also on the compounding technology of the rubber compound. For rubber extrusions, peroxide-vulcanized rubber extrusions are preferred over amine and phenolic vulcanization systems. It should be said that the heat-resistant water and superheated steam of rubber extrusions are generally inferior. It is not as good as ethylene-propylene rubber. After immersion in superheated water at 180 °C * 24 h, the volume change does not exceed 10%, and the physical properties do not change much.
Rubber extrusions have excellent corrosion resistance. It has excellent stability to organic liquids, different fuel oils and lubricating oils, and has good corrosion resistance to most inorganic acids, hydrocarbons, benzene and toluene. It is only resistant to low molecular esters, ethers, ketones and partial amines. Class of compounds.