EPDM rubber sheet and CR rubber sheet have obvious differences in performance, application and chemical composition. First of all, EPDM rubber (ethylene propylene rubber) is polymerized by ethylene, propylene and a small amount of diene monomers, and has excellent anti-aging properties, especially strong tolerance to ozone, ultraviolet rays and oxidation, so it is very common in outdoor applications. In addition, EPDM rubber sheet also has good heat resistance, water vapor resistance and chemical corrosion resistance, and is widely used in automotive parts, sealing gaskets and building materials.
In contrast, CR rubber (chloroprene rubber) is polymerized by chloroprene. It has good oil resistance, flame resistance and high mechanical strength, and is suitable for environments in contact with petroleum products, such as fuel pipes, oil seals and rubber parts in industrial equipment. Another advantage of CR rubber is that its weather resistance and ozone resistance are also relatively superior, but compared with EPDM, its high temperature resistance is slightly inferior.
In general, EPDM rubber sheet has advantages in weather resistance and anti-aging, and is suitable for outdoor and high temperature occasions; while CR rubber sheet is widely used in industrial environments due to its oil resistance and mechanical strength. When choosing, you should judge which material is more suitable according to the specific working conditions.