Brand: JYD Materials: PVC Color: Black Life span: 10 year Compared with other commonly used general rubber or special rubber, the main performance advantages of EPDM lie in the following aspects [2]: (1) The density of raw rubber is only 0.86-0.90g/cm3, which is the lightest common rubber; And it can fill a lot to reduce the cost of rubber. (2) Excellent aging resistance, weather resistance, ozone resistance, sunlight resistance, heat resistance, water resistance, water vapor resistance, UV resistance, radiation resistance and other aging properties. EPDM can act as a high molecular antioxidant or antioxidant when used with other unsaturated diene rubbers such as NR, SBR, Br, NBR, Cr, etc. (3) Excellent resistance to chemicals, acid, alkali, detergent, animal and vegetable oil, alcohol, ketone, etc; Excellent resistance to water, super hot water and steam; Resistance to polar oil. (4) Excellent insulation performance, volume resistivity 1016q · cm, breakdown voltage 30-40mv / m, dielectric constant (1kHz, 20 ℃) 2.27. (5) It can be used in a wide range of temperature. The minimum temperature is - 40 ～ - 60 ℃. It can be used at 130 ℃ for a long time.