MG Chemicals 422B-340G

Silicone Modified Conformal Coating, 12oz. Aerosol Cans

(Case of 12) ESD-Safe

422B is a 1-part, acrylic-silicone blend conformal coating that cures to a durable, flexible, and smooth finish. It is easy to apply and can be handled in only 8 minutes. It may be removed with appropriate strippers or soldered through for repair or rework. 422B is designed for applications where both high service temperature and flexibility are required. It puts minimum stress on components during thermal cycling, making it ideal for applications that involve a wide temperature range. It provides strong protection against moisture, corrosion, fungus, dirt, dust, thermal shock, short circuits, high-voltage arcing, and static discharge.

  • Certified UL 94 V-0 (File# E203094)
  • Maximum service temperature of 200°C
  • Fluoresces under UV-A light
  • Suitable for use with selective coating equipment
  • Excellent corrosion resistance
$453.36

Cured Properties

  • Resistivity: 1.2 x 1015Ω·cm
  • Dielectric Strength: 1,056 V/mil
  • Dielectric Withstand Voltage: >1,500 V
  • Dielectric Constant @ 1 MHz: 1.99
  • Dissipation Factor @ 1 MHz: 0.012
  • Glass Transition Temperature (Tg): 29°C
  • CTE prior Tg: 275 ppm/°C
  • Service Temperature Range: -40 - 200°C

Usage Parameters

  • Dry Time to Handle:
    • 1 Coat: 8 min
    • 2 Coats: 15 min
  • Minimum Recoat Time: 3 Min
  • Recommended Film Thickness: 25 -75 µm
  • Theoretical Coverage @ 25 µm: 70,000 cm2/L

Uncured Properties

  • Viscosity @ 25°C: 10 cP
  • Density: 0.90 g/mL
  • Percent Solids: 28%
  • Shelf Life: 5 y
  • Calculated VOC: 289 g/L
More Information
Sold As (Case of 12)
SKU I512047
Mfg. Part Number 422B-340G
Brand MG Chemicals
ESD-Safe Yes
Volume 12 oz. (340g)
Container Aerosol Can
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