... resistant 2,Environmental protection 3,Different color Rubber shock absorber 1.Material:100% food grade silicone 2 ... machine ability. Item nameRubber shock absorber SizeCustomized/standard and nonstandardBrand NameRubber shock absorber MaterialNBR,HNBR,EPDM,SILICONE,VITON ... acid and alkaline resistant; airtight; shock absorption, etc.PortShanghai or ningboShipping1) Small quantity, DHL/FEDEX/UPS/TNT- ...