HumiSeal 1B58LU

Product Specification

HumiSeal 1B58LU offers the following features:

• fast drying

•  single component

•  synthetic rubber based

• used with Thinner 903 or 905

• extremely low moisture vapor permeability

• improved thermal stability

• excellent flexibility, low stress on components

• fluoresces under UV light for ease of inspection and is easily repaired

• methylcyclohexane which is more environmentally friendly than traditional solvents

• full compliance with the RoHS directive 2015/863/EU

• IPC-CC-830 compliant

Application of HumiSeal® 1B58LU

For successful application of conformal coatings, substrates should be thoroughly cleaned to remove moisture, dirt, grease, flux residues, and other contaminants. Assemblies using low residue "no clean" materials can also be coated, provided adequate testing is performed to ensure compatibility with the conformal coating, assembly materials, and process conditions. For further details, please contact HumiSeal®.

Dipping

Achieving a uniform film during the dipping process may require reducing the viscosity of HumiSeal® 1B31 with HumiSeal® Thinner 503. After determining the optimal viscosity, a controlled immersion and withdrawal rate (5–15 cm/min) will help ensure even coating deposition. Solvent evaporation during the process can lead to viscosity increases, which should be managed by adding small amounts of HumiSeal® Thinner 503. Regular viscosity checks using tools like a Zahn or Ford viscosity cup are recommended.

Spraying

HumiSeal® 1B58LU is suitable for application via conventional spraying equipment. Ensure adequate ventilation to carry vapors and mist away from the operator. Adding HumiSeal® Thinner 903 or 905 is essential to achieve a pinhole-free film and a uniform spray pattern. Adjust the thinner-to-coating ratio and spray pressure according to the spray equipment and operator technique. Typically, a 1:1 volume ratio of HumiSeal® 1B58LU to HumiSeal® Thinner 903 or 905 is recommended, though adjustments may be needed.

Brushing

HumiSeal® 1B58LU can also be applied by brush with the addition of a small amount of HumiSeal® Thinner 903 or 905. Achieving uniformity in the film depends on the component density and the operator's technique.

Storage

Store HumiSeal® 1B58LU in tightly sealed containers, away from extreme heat or cold, at temperatures between 0°C and 35°C. Before use, allow the product to equilibrate for 24 hours at a room temperature of 18°C to 32°C.

Caution

When applying HumiSeal® Conformal Coatings, comply with local and national health and safety regulations. The solvents used in these coatings are flammable; avoid open flames or sparks during application. Always work in well-ventilated areas to prevent inhalation of vapors or spray and avoid skin and eye contact. For safety information, consult the MSDS/SDS before use.