... of NBR, Heat Resistance, Oil Resistance and Weather Resistance are better than NBRACMKeep the same Oil ... than NBR and other RubberVMQCombining well heat Resistance, cold and weather Resistance, but alkali and water Resistance is ... bad.SBRGood Polarity solvent resistance, weather ResistancePTFEHeat resistance, Cold resistance, chemical resistance, weather resistance is best,Low friction coefficient ...