A solvent free method for making an ethylene propylene diene terpolymer latex by blending water with 1 weight percent to 50 weight percent surfactant; blending solvent free ethylene propylene diene terpolymer with the water and surfactant at a low pressure to form a terpolymer mixture; high shear mixing the terpolymer mixture at 0.5 atm to 1.5 atm for 5 minutes to 24 hours at a temperature from 20 degrees Celsius to 100 degrees Celsius to form a solvent free ethylene propylene diene terpolymer latex formation, wherein the solvent free ethylene propylene diene terpolymer latex formation has a viscosity from 1 centipoise to 2000 centipoise; a density from 0.8 to 1.1; and a shelf life of from 7 days to 365 days without separating or stratifying.