1.Solar Water Heater Parts 2.Diameter 47 mm 3.RoHS;ISO9001 certification 4.100%silicone 5. ... long service life. Product attributesNamesilica gel circleFull specifications20,25,32,47,58,70mmProduct size47mmFlanging Height4.2mmPackage size59*41*31cmPackaging2000pcs/ctnWhether to ... according to your requirements Best-selling rubber products diameter 47 silicon sealing ring for Solar Water Heater