... .No toxic/hardening/Cracked,Hot Resistance 2.Anti-acid,Waterproof 3.EPDM rubber material Details:1. Rubber Materials: EPDM NBR NR ... -toxic, Safety and Health, strong , beauty, long term use, firm,3.Color : black4.Size: all kinds5.Logo & Printing: according to customers ... the sealing strips. We choose the EPDM rubber, silicon gel, heat shrinkable rubber and NBR compound with the PVC as our material ...