... 3. Radiation resistance 4. Oil resistance OEM silicone keyboard cover MaterialNR,CR,NBR,SBR, SILICONE,VITON,EPDM, ... HNBR, BUNA, etc.Hardness30degree-90degreeMode of productionCompression and injectionProduction CapabiltyRubber compression/injection machines including 150T,200T,250T ... , 300T and 500TSize/colorThe size and color can be designed by the ...