Plastic rolling Silica gel to further exp the application of Plastics in Silica gel cage widely used has highlighted the plastic in the rolling Silica gel the superiity of the application. With modern technology plastics new materials development application of the successful extension of the scope f plastic rolling Silica gel application to further exp the space. Silica gel cage with plastic had from PA66GF gradually start using PTFE PTFE GF PEI PVDF PEEK GF PEEK CF PPS PI UHMWPE other materials to meet the requirements of different conditions. Such as PTFE PVDF main requirements f a crosionresistant wking conditions UHMWPE has good strength low frictional properties low temperature applications (to as low as 150 ℃) PEEK GF CF is mainly used f high temperature radiationresistant low friction wking conditions.