Closed cell sponge rubber sheet is made from high quality foam rubber compound. It features low water absorption, waterproof, shock absorption and sound insulation. Good resilience and compression recovery for long time sealing use. This sponge sheet can be cut and punched into gaskets, sealing strips and buffer pads. Closed cell structure blocks moisture ingress and prevents corrosion. Widely used for machinery, electromechanical equipment, cabinet gap filling and pipeline waterproof sealing. We support custom thickness, density and die-cut shapes.