Apiezon Wax W

Apiezon Vacuum Sealing, Mounting, and Etching Waxes

The Apiezon range of waxes features three products including the popular Apiezon Wax W, also known as 'Black Wax'. All three waxes in the Apiezon range can be used as permanent or semi-permanent vacuum sealants or mounting media. Apiezon Wax W is also a perfect etch resist.

Why use Apiezon Waxes?

  • Versatile products suitable for a multitude of uses
  • Etch resist (Wax W only)
  • First-rate vapor pressure characteristics
  • High purity combined with powerful gettering & clean meltdown properties
  • Excellent waterproof media
  • Easy to use and to remove
  • 10 year shelf life


  • Apiezon Wax W: Hard Vacuum Sealing / Mounting Wax, Etch Resist
Typical Property Wax W
Approximate Softening Point °C
Estimated Vapor
Pressure @ 20°C / 68°F, torr
4.5 x 10-9
Temperature for Application °C
Working Temperature Range °C
Water Permeability
g/cm/hr/mm Hg @ 25°C
0.8 x 10-8
Pack N/A
Thermal/Electrical Properties
Thermal Conductivity @ 20°C,
w/m °C
Specific Heat @ 25°C, J/g 1.8
Loss Tangent 0.015
Permittivity 2.8
Volume Resistivity, Ω cm 6.31 x 10-15


Supplier: Apiezon
SKU: 60710
Pack: 500 g