Polyurethane Coatings – Mil –Spec Type UR

Polyurethanes are very versatile coatings. They can withstand exposure to harsh chemicals and environmental conditions. Type UR coatings have a durable finish that provides a protective coating for printed circuit boards against moisture, corrosion, and thermal shock. Polyurethane coatings insulate electrical and electronic components and assemblies, including generators, motors, transformers, relays, and solenoid coils. Type UR coatings can be sprayed, Dipped or molded. The liquid can be thinned using the appropriate thinners to adjust solids content

Features

Fast drying-units can be handled in a short period of time

  • Low cost compared to some other coatings
  • Apply by dip, brush or spray
  • Class F temperature rating (160°C / 320°F)
  • Excellent chemical resistance
  • Oil and moisture resistant
  • Very Good for coating circuit boards
  • UV indicator for quality inspection
  • Superior abrasion resistance
  • Excellent adhesion
  • Good flexibility
  • Can be thinned to desired viscosity

 

Typical Properties of Polyurethane coatings
Note: these can vary considerably from product to product and manufacturer to manufacturer

Chemical Resistance of Polyurethane Coating
Note: these can vary considerably from product to product and manufacturer to manufacturer