... grade AAA 3,Pleomorphic Rubber sealing gasket in NR FOAMShoreA60,70,80,90 black,white,red,green,yellow,blue NSF,FDA ... the bathroom applicance & other home appliances.Shore 60±5 or 70±5AdvantageAging resistance, high/low temperature resistance, acid/alkali resistance, abrasion ... .Not-standard packing: follow customers' requirement high quality 2 inch wax toilet ring