The two most chemically resistant materials from our wide range are PTFE and a fluoroelastomer (a Viton® type material). Fluoroelastomers are one of the most fluid and heat resistant synthetic rubbers developed, whilst PTFE is attacked by so few chemicals that it is far more practical to describe the exceptions.
Visit the The Precision Plastic Ballsack Company Ltd website for more information on Fluoroelastomer Plastic Balls