Compatibility of elastomers with test fuels of gasoline blended with ethanol

This article summarises the compatibility of six elastomers – used in fuel storage and delivery systems – with test fuels representing gasoline blended with up to 85% ethanol. Individual coupons were exposed to test fuels for four weeks to achieve saturation. The change in volume and hardness, when wetted and after drying, were measured and compared with the original condition.