As the thiol coagent contained sulfur, the products made using this type of prevulcanization have the potential to cause type IV allergic reactions on contact with human skin and other tissue.Furthermore, the use of 40% DRC in the NR latex restricts the applications of the products made. Although a 40% DRC of the NR latex is suitable for making dip molding products such as medical gloves and condoms, the manufacture of many other products (e.g., dental dams, tubes, baby feeder teats) requires the use of 60% DRC.