Dolphs AC-41 Varnish – 20 oz Aerosol Can



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AC-41 is a high temperature; fast cure, air dry, polyurethane varnish, and is an excellent conformal coating for all electrical and electronic parts. It is especially recommended as a circuit board coating. SYNTHITE® AC-41 is also available in aerosol as DOLPH – SPRAY® AC-41.

Features & Benefits:

  • Fast drying – Units can be handled in 30 minutes
  • Ease of Application (dip, brush or spray)
  • High temperature rating
  • Excellent chemical resistance
  • Oil and moisture resistant
  • Superior abrasion resistance
  • Excellent adhesion
  • UL recognized systems

Typical Applications:

  • Field Coils 
  • Control Coils
  • Motor Frames
  • Switch Bases
  • Molded Bakelite
  • Electrical Connectors
  • Collector Rings
  • Fuse Tubes
  • Solenoid Coils
  • Controller Shafts
  • Printed Circuit Boards
  • Commutator Ends
  • Porcelain
  • Soldered Joints
  • Finger Blocks
  • Oil reservoir interior
  • Buss bars
  • Touch up overcoat

Typical Properties:

Color /Appearance Light-Dark Amber
Density @ 77°F (25 °C), Lbs/gal 7.0 – 8.0
Viscosity @ 77°F (25°C) Brookfield Viscometer cps 125 – 275
Flash point 81°F (27°C)
Cure Time @ 77°F (25°C) on Strip, min 10 (Set to Touch)
30 (Tack Free)
Film Build, mils/side, ASTM D-115 1 – 1.5
Thinner (Solvent) T-200X
Federal Specification, TT-P-1436, Free of After-Tack 1 Hour
VOC-bulk, lb/gal
VOC-aerosol (calculated)


Dielectric Strength, ASTM D 115, volts/mil 2,000 (Dry)
1,200 (Wet)

Chemical Resistance:

Water Excellent
Acid (10% Sulfuric Acid) Excellent
Alkali (1% Sodium Hydroxide) Excellent
Salt Water Excellent
Oil, ASTM D-115 Passed
Corrosive Effect on Copper None

Thermal Class (UL-1446):

Twisted Pair 130 (MW-28)

Additional information

Weight 1.8 lbs
Dimensions 2.5 × 2.5 × 9 in
Product Restrictions

Packaging Size General

Packaging Size Specific


Must Ship Freight

Country Of Manufacture



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