Dolph AC-46 Spray Varnish

Description

AC-46 varnish is a clear air-drying polyurethane coating used as an electrical insulating varnish and conformal coating. The spray format gives maintenance and production teams a practical way to coat coils, windings, printed circuit boards, and small electrical parts without setting up a dip tank.

AC-46 varnish Applications

• Conformal coating for electrical and electronic parts.
• Protective varnish for coils, stators, transformers, motors, and winding assemblies.
• Moisture-resistant coating for aviation, defense, and MRO electrical work.
• Shop touch-up where brush, dip, or spray application may be needed.
• Parts that need a clear film with chemical, oil, and moisture resistance.

Published technical data describes Synthite AC-46 as a high-temperature, fast-cure, air-dry polyurethane varnish with fungus resistance and handling time around 30 minutes. The coating is also described as suitable for dip, brush, or spray use, with strong adhesion, good flexibility, UV tracer, and a Class F temperature rating.

AC-46 varnish Handling Notes

Prepare parts by removing oil, dust, flux residue, and loose contamination before coating. Mask contacts, threads, and surfaces that must remain conductive or dimensionally clear. Apply light, even coats rather than heavy passes that can trap solvent or create runs. Follow the safety data sheet for ventilation, ignition control, PPE, and disposal.

For electrical assemblies, confirm coating thickness, cure, and inspection method before releasing parts to service. Procurement teams should also review any customer or military specification requirements before substituting a coating in an approved build process.

Ordering Details

For related coating and surface protection materials, browse Chemical Concepts coatings. For industry context on coating technologies, review the American Coatings Association.

For help confirming coating fit for an electrical part or repair process, call (800) 220-1966 or email [email protected].