Selling Rubber from Light Sakti Pratama in Jakarta. Rubber is one of the industrial materials that is widely applied to various household, industrial, automotive, and other products. What is Rubber? Rubber is a hydrocarbon polymer contained in the latex of several types of plants. Some other plants also produce latex latex with slightly different properties from rubber, such as members of the fig family (for example, banyan), sapodilla (for example patchwork and sapilla manila), other Euphorbiaceae, and dandelions.