1.Good weather resistance and Color stability 2.Various of materials,such as NBR,EPDM,NR,SBR etc 3.Factor direct sales. Specifications1) Made of high quality food grade silicone material, other rubber material also available, such as NR, NBR, CR, EPDM etc. 2)Color and shape can be changed upon request. Available in various sizes and colors .3)All kinds of resistance,for example,weather resistance ...