APX® is not crumb rubber. We take recycled feedstock and upcycle it. What does this mean? It means that we take vulcanized scrap and produce a virgin compound substitute. Others take scrap and create a compound filler. While a substitute can be used at high percentages (known as “loads”) without reducing quality, a filler does not bind properly in a new compound so it can only be used in small quantities or important physical properties will deteriorate.