Silicone caps are ideal for powder coating, E-coating, plating and anodizing. It can be used both as a cap or as a plug. Other materials (such as EPDM, NBR, Natural rubber ) are available. Inner dimension range from 0.02’’ to 2.0’’,typical wall thickness is 0.0625’’. typical height 0.5’’,1.0’’,1.5’’.We also can make other dimensions as customer’s requirement.