XTREME EPDM Rubber Bands: 7-inch File Bands 7" X 1/8"X treme File Bands EPDM Non Latex Rubber Bands Our X treme EPDM File Bands are non latex rubber bands made from a type of synthetic rubber called EPDM (Ethylene Propylene Diene Monomer). This type of rubber gives the bands outstanding properties that make it resilient to UV, heat, ozone, weather and age. Each 7 X 1 8 band has built in longevity and offers a wide range of applications for home, office, and recreational use such as: Active and Archival