... ,FDA,WRAS,TZW,W270,UL Lead time15day Itemsilicone o rings L/T 15daysDescriptionMaterial: siliconeShoreA50,60,70,80,90black,white,red,green ... .etc.AdvantageGood Ozone resistance, aging resistance, high/low temperature resistance, acid/alkali resistance, weather resistance, abrasion resistance, voltage resistance and insulating ...