EPDM rubber (ethylene propylene diene monomer (M-class) rubber) a type of synthetic rubber, is an elastomer which is characterized by a wide range of applications. The E refers to ethylene, P to propylene, D to diene and M refers to its classification in ASTM standard D-1418. The M class includes rubbers having a saturated chain of the polymethylene type. EPDM granules are softer as compared to SBR granules and are pre-coated and not colored (when you break those granules, same color found inside). EPDM has more cushioning and absorption quality than SBR Granules.
EPDM GRANULES ARE AVAILABLE IN MORE THAN 10 COLORS.
Styrene-butadiene or styrene-butadiene rubber (SBR) is a synthetic rubber copolymer consisting of styrene and butadiene. It has a good abrasion resistance and good aging stability when protected by additives, and is widely used in car tires, where it may be blended with natural rubber.