... at low temprature.CR: high tensile strength,good tearing property,heat resistance,abrasion resistance,oil resistance,acid ... low compressive strain.EPDM: high tensile strengh,good tearing property,abrasion resistance,ageing resistance,ozeone resistance,good ... resistance,alkali resistance.NR: high tensile strength,good tearing property,abrasion resistance,heat resistance,acid resistance,alkali ...