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Sealing Compound ELEP COAT LSS Series

This moisture-preventing liquid sealant thoroughly protects circuit boards from changes in humidity, temperature, and other environmental factors. ELEP COAT LSS Series.



It is and insulating / moistureproof coating material that protects the printed circuit board which is most important part of electronic equipment from harsh environments such as outdoor high temperature and high humidity.
  • Offers low Young's modulus, small thermal expansion coefficient, excellent moisture-proofing, waterproofing, insulating, dust-proofing, and protective properties.
  • Features remarkable, reliable adhesion, quick film formation (3 to 15 minutes after application), strong elasticity, and anti-corrosion properties.  


Item Unit LSS-520MH LSS-520MHB LSS-
Measurement Conditions
Appearance colour - Clear Blue Clear (Fluorescence by black light irradiation) Blue Clear (Fluorescence by black light irradiation) Milky white
Base % 25 25 25 15 15 40
Viscosity mPa ·s 400 400 400 40 40 12 25℃
Young's modulus MPa 75 75 75 75 75 9.2 Tensile speed 10mm/min
Elongation (23℃) % 460 460 460 460 460 500 Tensile speed 300mm/min
Moisture vapor permeability g/cm²-day 0.002 0.002 0.002 0.002 0.002 0.0035 40℃ * 90%RH
Coating thickness:100µm
Specific volume resistance Ω·cm 3.3 * 10^16 3.3 * 10^16 3.3 * 10^16 3.3 * 10^16 3.3 * 10^16 2.4 * 10^16 JIS C2103
Dry to touch min. 5 5 5 5 5 15 Coating thickness:20µm
[Extra Info]
  • * Measurements provided here are measurement value examples and are not guaranteed.


  • ELEP COAT is a liquid sealing compound that uses rubber-modified material as its main ingredient.
  • When applied to the component side of a substrate, it thoroughly protects against moisture, dew, dust, and vibration.
  • In addition, this insulating, moisture-proof sealing compound results in very little stress on the components, and has no negative influence on the substrate such as cracks or leakage current.

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