Ideal for high temperature environments. Silicone Conformal coating is a flexible finish product that provides a protective coating for printed circuit boards against moisture, corrosion, and thermal shock. It protects and insulates electrical and electronic components and assemblies, including generators, motors, transformers, relays, and solenoid coils. For spraying, liquid can be thinned using M.G. Thinner Cleaner. Thin up to one half part thinner to one part coating.

Directions of Use

Best results will be obtained by applying to thoroughly cleaned and dried parts or materials. It is essential that surfaces be free of any trace of grease or organic substances.

At room temperature, the product will tack free in approximately 5-7 minutes, and full cure will be achieved in approximately 48 hours.

Curing may be accelerated by applying moderate heat with either a convection oven or infrared lamps. We recommend curing in a convection oven at 65°C (149°F) for one hour, but other temperature and time combinations can work well. Heat curing will improve the physical strength of this coating.

Specifications

Standards   Meets UL 94 Flame Class, 94V-0 Uncured Properties Phase Liquid Color Clear Odor Ethereal Specific Gravity 0.90 Viscosity 13 cps @ 23 °C Brookfield 100 rpm Spindle 4 Flash point -18 °C / -0.4 ° F Autoignition temperature 465 °C / 869 °F LEL 0.8 UEL 13.1 Boiling Point 55 °C / 131 °F pH 7.0 Solvent Xylene, acetone Percent solids by weight 25% (liquid);15% (aerosol) VOC Content 75.0 % by wt.  675 Grams / Liter Hardness 75 Shore D Cure schedule Tack free time 5-7 minutes at 22°C / 71.6°F Full cure 48 hrs. @ 20°C / 68°F 60 min. @ 65°C / 149°F Electrical Properties Dielectric Strength under testing Dielectric Constant @ 100MHz under testing Loss angle tangent @ 100MHz under testing Volume Resistivity under testing Surface Resistivity under testing Dielectric withstanding voltage @ 1,500 VDC for 1 min (IPC-TM-650) under testing

Available Sizes

Catalog Number Sizes Available Description 422B-55ML 2 oz (55 mL) Liquid 422B-340G 340 gram (12 oz) Aerosol 422B-1L 950 mL (1 quart) Liquid 422B-4L 4 L (1 gallon) Liquid 422B-20L 20 L (5.3 gallon) Liquid