Comparison of Polymers in Use Today
EPR
EPRs are among the best weathering resistant synthetic polymers [8]. Because of EPR s saturated
polymer backbone (*) it has excellent electrical, chemical and mechanical properties with
superior aging and color stability. In general all EPRs have outstanding resistance to heat, oxygen,
ozone and sunlight. In fact, the resistance of EPDM rubber to sunlight is rated equal to that
of silicone rubber [9], [10], [11].