Rubber strips for door bottoms are typically made from various types of rubber, including EPDM (ethylene propylene diene monomer), silicone, and vinyl. Each type of rubber has its own unique properties, making it suitable for different applications. For instance, EPDM rubber is renowned for its weather resistance, UV stability, and durability, making it an excellent choice for outdoor doors. Silicone, on the other hand, is favored for its flexibility and ability to withstand extreme temperatures, ideal for environments that face wide temperature fluctuations.