One Part Low Viscosity Neutral 100% Solid Content Silicone Conformal Coating Adhesive. 721 series silicone coating adhesive is a low viscosity neutral organic silicone with 100% solid content and is easy to spray, dip, brush or pour. Protective coatings for hard and soft printed circuit boards and for impregnated porous substrates. Single component, low viscosity solvent-free, environmentally friendly High transparency, room temperature curing, good adhesion Stable and elastic at -60 to +200 degree after curing. It has good adhesion with most substrates without substrate coating Excellent waterproof, anti-corrosion, moisture-proof, electrical insulation performance. the coating protective film is also conducive to the friction resistance and solvent resistance of the line and components, and can release the pressure caused by periodic changes in temperature. Suitable for coating coating of thick film circuit system and printed circuit board; LCM liquid crystal border seal; Other applications requiring good permeability.