Custom rubber parts made to meet your specific requirements Sanshi Rubber can provide customized rubber parts to meet the specific needs of your project. As an experienced rubber parts manufacturer, we ask questions designed to provide you with the best parts to meet your needs. Discussing your project requirements with Sanshi Rubber's engineers is an important first step in the process. Contact us. Unless you already know the exact rubber elastomer you need for your product, our sales engineer will ask questions about the environment in which the rubber product you need will work.