HumiSeal® 1A27 LTX

• Protection against moisture, corrosive environments and dirt
• Easy application with automated systems
• Low moisture vapor permeability.
• Range of preblends thinners available for different application methods
• Compliant with GB30981-2020

Cleanliness of the substrate is of extreme importance for the successful application of a conformal coating. Surfaces must be free of moisture, dirt, wax, grease, flux residues and all other contaminants. Contamination under the coating could cause problems that may lead to assembly failures.
Technical Support should be contacted if any further advice on Pre-blend Products and equipment is required.

Dipping  -  Depending on the complexity, density and configuration of components on the assembly, it may be necessary to reduce the viscosity of HumiSeal® 1A27 LTX with HumiSeal® Thinner 789 in order to obtain a uniform film. Once optimum viscosity is determined, a controlled rate of immersion and withdrawal (5-15 cm/min) will further ensure even deposition of the coating and ultimately a uniform film. During the application, evaporation of solvent causes an increase in viscosity that should be adjusted by adding small amounts of HumiSeal® Thinner 789. Viscosity in the dip tank should be checked regularly, using a simple measuring device such as a Zahn or Ford viscosity cup.

Spraying -   HumiSeal® 1A27 LTX can be sprayed using conventional spraying equipment. Spraying should be done in an environment with adequate ventilation so that the vapor and mist are carried away from the operator. The addition of HumiSeal® Thinner 789 is necessary to ensure a uniform spray pattern resulting in pinhole-free film. The amount of thinner and spray pressure will depend on the specific type of spray equipment used and operator technique.

Brushing - HumiSeal® 1A27 may be applied by brush with a small addition of HumiSeal Thinner 789. Uniformity of the film depends on component density and operator's technique.