Main Electronic Supplies Ltd 4554 Main Street Vancouver BC Canada V5V 3R5 (604-872-0267)

MG Chemicals Coatings

Acrylic Lacquer Conformal Coating 419B 

Protects printed circuit boards against moisture, corrosion, and thermal shock. Protects and insulates electrical and electronic components and assemblies, including generators, motors, transformers, relays, and solenoid coils.
Clear tough protective coating, Protects against static discharge.
service temperature limits: 65C
solids by volume: 18% - solids by weight: 25%
viscosity: 50-55, 20-25 Sec.s NBR.
Remove with M.G. Chemicals cat# 831 Conformal Coating Stripper
Clean up with M.G. Chemicals cat# 435 Conformal Coating Thinner
Available Sizes
419B-340G - 340g (12 oz) Aerosol
419B-1L - 1L (1 quart) Liquid
419B-4L - 4L (1 gal) Liquid
419B-20L - 20L (5.3 gal) Liquid

Green Overcoat Pen 4190-GP
Protects printed circuit boards against moisture, corrosion, and thermal shock. Protects and insulates electrical and electronic components and assemblies, including generators, motors, transformers, relays, and solonoid coils. Convenient pen applicator for precision work.
Green tough protective coating - Protects against static discharge
service temperature limits: 65C
solids by volume: 18% - solids by weight: 25%
viscosity: 50-55, 20-25 Sec.s NBR.
UV indicator added for O.C. inspection
Remove with M.G. Chemicals cat# 831 Conformal Coating Stripper
Clean up with M.G. Chemicals cat# 435 Conformal Coating Thinner
Available Sizes
4190-GP - 0.16 oz Pen

Silicone Conformal Coating 422 / 422A
A silicone resin protective coating for applications where temperature or flexability is a concern. Protects printed circuit boards against static discharge, arching, moisture, humidity, corrosion, and thermal shock. Contains a UV indicator for quality control inspection. Easy to repair.
Directions of Use
Spray an even coat with a minimum application of .048 grams per square centimeter. Application measurements can be achieved by first weighing the can, then spraying an even coat, then reweighing the can. Knowing the dimensions of your board, one can calculate as to whether your application is within certified limits.
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 30 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 conbinations can work well. Heat curing will improve the physical strength of this coating.
Available Sizes
Silicone Conformal Coating W/UV IND.
422A-340G - 340 gram (12 oz) Aerosol
Silicone Conformal Coating Pen
422A-P - 5ml (0.16 oz.) Pen
Silicone Conformal Coating
422-1L - 950ml (1 quart)) Liquid
422-4L - 4L (1 gal) Liquid
422-20L - 20L (5.3 gal) Liquid

Silicone Conformal Coating Pen 422A-P
Protects printed circuit boards against moisture, corrosion and thermal shock
Clear tough protective coating - Protects against static discharge
Dries in minutes - cure time 12 - 48 hours at room temperature or 1 hour at 65 C (149 F)
Remains flexible from -65 C to 200 C (-85 F to 392 F)
Available Sizes
Silicone Conformal Coating Pen
422A-P - 5ml (0.16 oz.) Pen

Conformal Coating Thinner / Cleaner 435
For thinning M.G. Chemicals Coating up to 50%. Also for use cleaning workplace and equipment after using conformal coatings.
Fast evaporating - Highly flammable

Available Sizes
435-100ML - 100 ml (3.4 oz) Liquid with brush cap
435-1L - 1L (33 oz) Liquid


Epoxy & Adhesive Cleaner 8328
Contains Ethyl Lactate. Very effective cleaning solvent (KB value > 1000). Excellent for wipe claning, ultrasonics and cold cleaning applications. Very human and environment safe solvent.
Slow evapouration - Low odour - Safe on most plastics - Leaves no residue - High flash point (139°F) - Biodegradable - Leaves no residue
Available Sizes
8328-500ML - 500 ml (17 oz) Trigger Pump

Conformal Coating Stripper 8310
Removes protective coatings, including epoxy, urethane, silicones, and acrylics. Also removes carbon, tar, adhesives, rubber, and some plastics.
Extra Strength - Non-flammable - Non-drip (gel type) - Safe on metals.
Avoid contact with skin
Available Sizes
8310-100ML - 100 ml (3.4 oz) Liquid, with brush cap

Peelable Solder Mask 862
Excellent for masking contacts, gold fingers, card edges and desired areas during conformal coating applications. Meets MIL-STD-2000 paragraph 5.3.18 parts a, b, and d.
Contains no ammonia
Non corrosive to copper, gold, silver or presoldered surfaces
Opaque pink color turns red when cured
Can be used in water or solvent systems
Anti-static, thixotropic
Tested at temperatures 200°C and 400°C.
Directions of Use
The substrate should be free from grease, oil, and particulate matter. Applay a 30 to 40 MIL coating to desired area for best results. May be thinned using deionized water. Under normal conditions, cure will occur in 1 hour at 25°C (77°F). Cure can be accelerated to 30 minutes at 65C (150°F). Mask will change from an opaque pink to a translucent red when completely cured.

Available Sizes
862-150ML - 150ml (5.3 oz) Tube
862-4L - 4L (1 gal) Liquid



Prices are subject to change without notice.