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Mercury Semiconductor Diffusion Heater (350°C-1250°C)

Features In All Configurations

  • Designed for fast ramp, fast cool operations

  • Proprietary open coil helix design for greater radiant energy transfer

  • Line voltage feature available to eliminate transformers

  • Standard terminal leads available to facilitate electrical connections

  • Kanthal APM/A1 element wire

  • Proprietary vacuum-formed ceramic fiber insulation

  • 1800°C rated alumina coating to prevent dust contamination

Horizontal Low Mass Diffusion Heater
Vertical Low Mass Diffusion Heater

Mercury Diffusion Heater Cross Section (Low Mass)

Horizontal Low Mass Diffusion Heater Cross Section

1800°C Alumina Coating

Black Body Coating

Proprietary VF Fiber

Recess Exposed Helical Element

Insulation Blanket

Stainless Steel

Lead Isolator

Kanthal Lead

Semiconductor Diffusion Heaters (Related Products)

Diffusion Furnace Torches
High Temp Vestibule Blocks
Nextel Insulation Parts



We offer both high and low flow torch elements with an improved design, allowing for greater radiant energy pass through. Available is an extensive line of replacement torches for most major brands, such as; TEL, Kokusai, Tempress, Thermco, and SVG.

Vestibule Blocks


Produced from our proprietary vacuum-formed ceramic fiber insulation rated up to 1500°C. This is an engineered blend of fibers, resulting in a highly durable product resistant to thermal shock. End chambers undergo a secondary process, which toughens the outer skin to allow for greater wear resistance.

Collars & Heat Disks


Produced from 100% high purity inorganic ceramic fibers of alumina and silica woven into textiles with a soft inner layer. They provide a lightweight seal and are used in applications requiring repeated use or ease of handling.

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