... etc., should be Heat sealing gasket machinery. Can be made without any toxicity due to insulation, insulation products and medical rubber products. Both waterproof ... petroleum, chemical, aviation, aerospace and other departments. Other rubber gasket: Neoprene rubber gasket (CR), natural rubber gasket (NR), EPDM rubber gasket (EPDM), acrylic rubber gasket and other special rubber. With oil, acid, ...