NR 40 Grey - a high-quality gray natural rubber membranes with hardness 40 Shore A, intended for use in membrane presses in wood industry. The high working temperature resistance up to 130 C and high elongation till 700% allow extend service life of membrane. More cycles less downtime. The vacuum membranes can be used in hot vacuum membrane presses, as in cold vacuum presses. NR-40 Membranes supplied with smooth finish. Wide range of sizes.