EPDM is great in outdoor environments with its ability to handle a wide temperature range (-65 F to +212 F), it also resists detergents, ozone, saltwater, fresh water, and UV light. Multiple strands can be used to replace conventional flat belts.
Silicone is great in extreme temperatures (-65 F to + 450 F). It retains it's pliability and properties throughout this temperature range. It also resists detergents, ozone, salt water, and UV light.
Multiple strands can be used to replace conventional flat belts.
Endless Round Viton High-Performance Rubber Belts - BLACK
Viton is a great choice when your belts are exposed to extreme conditions. With a temperature range of -15 to +399F it is resistant to oils, gasoline, synthetic lubricants, ozone, and UV light.