ule, formed by lining together, end-on-end, many smaller molecules known as monomers. In this case, the monomers are chloroprene, C4H5Cl:"Neoprene is actually more resistant than natural rubber to water, oils, solvents and heat, so it is very useful. 2.Product DescripionItemNeoprene rubber molded productsMaterial standard:ASTM D2000, SAE J200.Tolerance standard:RMA A1,A2,A3, DIN ISO 3302-1,DIN-7715/BS-3734ColorBlack or according to customers' requirementsTechnologyMolded Rubber PartsHardnes