Advantages: Outstanding resistance to heat and hot oil; excellent resistance to weather, ozone, sunlight and oxidation; very good resistance to gasoline and oil, especially those that contain sulfur.
Comment: Heat resistance of acrylic is superior to that of any other elastomer except silicone and fluorocarbon. It performs well in both hot air and hot oil for extended periods without significant loss of physical properties. Acrylic has moderate resistance to cut growth and flex cracking. Use of acrylic is limited by its inferior flexibility at low temperatures, poor processing properties, and slow vulcanization rate. A post cure is necessary to obtain the best characteristics. Low temperature service of acrylic is possible to only about -20F. However, some types of acrylic that have improved low temperature flexibility at the expense of tensile strength and oil resistance are available.
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