Double Bubble Urethane A-85 is a medium-hardness, highly flexible two-component polyurethane system designed for use as adhesive or sealant and in casting, filling and coating applications requiring rapid cure, high flexibility, high resilience, transparency and resistance to breakdown or yellowing from exposure to UV light. Urethane A-85 is suitable for sealing and repair of flexible substrates such as flexible conveyor belts, printing press rollers, rubberized fabrics, shoes, ski boots and other sports equipment. It is also excellent for bonding refrigeration and AC equipment. Kalex 42223-52223 is impervious to water exposure during the curing process, yet bonded substrates should be reasonably water-free before application.