4226 - Clear Insulating Varnish




4226 is a highly insulating varnish with excellent arc and corona resistance. It is a low viscosity, 1-part coating that is easy to use and adheres well to many substrates.

This PCB varnish coating protects transformers, coils, motor windings, and various electric generator parts against arc, corona, corrosion, and moisture.

For dielectric coating, see 4228. For red insulating varnish, see 4228A.

Features & Benefits

  • High dielectric strength – 4 100 V/mil (dry); 3 000 V/mil (wet)
  • Excellent moisture resistant
  • Excellent finish – tough, flexible, glossy, and durable transparent coat
  • Good adhesion
Part # Net Vol. Net Wt. Packaging Unboxing
4226-55ML 55 mL 50.9 g Bottle
4226-1L 945 mL 875 g Bottle

Technical Documents

Technical Datasheet (TDS) -

Safety Data Sheet

Warning WARNING! This product can expose you to chemicals including cumene and ethylbenzene, which are known to the State of California to cause cancer, and toluene, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.