HumiSeal® 1B59LU is an air drying, single component, synthetic rubber conformal coating. The unique chemistry, of HumiSeal® 1B59LU imparts extremely low moisture vapor permeability and improved heat resistance. The coating demonstrates excellent flexibility, low stress on components, fluoresces under UV for ease of inspection and is easily repaired. The coating is in full compliance with the RoHS Directive 2011/65/EU and meets the requirements of IPC-CC-830.