WB-595 Stop-Off Coating

, Water-Based Systems

WB-595 is a low viscosity, water-based acrylic coating suitable for spray, brush, or dip applications.  The material exhibits superior adhesion to a wide variety of substrates including:  Metals, Ceramic, Glass, and many plastics.  WB-595 is formulated for curing at room temperature over-night or low bake temperature;  30 minutes at 50 Deg. C.  This water-based acrylic coating is low in VOC’s.  In addition to the  standard clear,  WB-595 is available in custom colors upon request. WB-595 is a replacement for the traditional solvent based stop-offs. It provides an electrically resistant coating to areas which do not need to be plated.


  • Controlled Plating


  • Non Flammable
  • Low in VOC’s (1# per gallon)
  • Custom Colors Available
  • Fast Cure, Low temperature Bake
  • Superior Adhesion
  • Easily removed with light alkaline solution (add 5% of a 99% Monoethanolamine. or equivalent solution, to water.)

Liquid Characteristics:

Resin: Acrylic Base
Viscosity: 1200 cps
Specific Gravity: 1.02
Appearance, liquid: Milky
Appearance, Cured: Water Clear, High Gloss

Directions for Use:

Surfaces to be coated should be clean, dry and free of any oils, grease etc.  Apply WB-595 by brush, dip, or spray, and ensure that  a uniform coat has been applied, no more than 2 mils wet film.  Allow parts to stand for at least several hours at room temperature , or 30 minutes at 50 deg. C.  Allow parts to cool before handling/testing. Wipe clean with alkaline solution.