Natural rubber is made from the latex of hevea gum. The chemical name of the polymer is polyisoprene. Polyisoprene can also be polymerized from its rubber matrix monomers. Natural rubber has many excellent physical properties: the resilience rate can reach 50%-80% at 0-100℃, the elongation rate is 1000%, the tensile strength of pure rubber is 17-25Mpa, and the vulcanization is reinforced by carbon black. The glue can reach 25-35Mpa, the 500% constant elongation stress is above 12Mpa, the air tightness is good, the seepage parameter is 2.969*10 H2(s.Pa) is similar to SBR, the disadvantage is that it is not resistant to hydrocarbon oils and is not suitable for use In ultraviolet light, oxygen, ozone. But its poor weather resistance can be improved by special additives.

　　 (1) Temperature range -50℃-70℃, (up to 100℃ in a short time)

　　(2) The hardness range of Shore A40 degrees to 90 degrees

　　 (3) The color is black, and the color can also be specified by the customer.

　　 (4) Natural rubber has good compatibility and can be used in combination with many types of rubber. In the tire industry, natural rubber can be used to manufacture treads, carcasses, sidewalls and other parts, as well as inner tubes. Natural rubber can also be used to make hoses, tapes, general mechanical seals, sponge products, surgical medical supplies, latex products, etc.