... SiliconeHardness:Shore40,50,60,70,80,90Color: black,white,red,green,yellow,blue,brown,orangeAdvantageAging resistance, high/low temperature resistance, good ... packing: follow customers' requirement food grade colorful o ring with high quality approved NSF61,WRAS,UL,FDA,ACS, ... 2013/06/28 All the information below may covers both Gold Supplier and its related companies , Their Relationship will be ...