Peerless Blog

Comparison Of Two Common Structural Insulation Options

Are you trying to choose which insulation product is right for your application where high strength, thermal stability, electrical insulation and/or machinability are required? Let’s compare the key properties of two popular options and provide a comparison to assist in your decision-making process.

Transite 1000 vs. NAD-11

  1. Common Applications
    Both can be used to insulate load-bearing gaskets, as spacers, supports, laboratory benchtops, collars, bushings, transformer spacers, or even industrial oven shelving or soldering plates.
  2. Composition
    Transite 1000 is monolithic non-asbestos fiber cement board. NAD-11 is glass-mica-quartz non-asbestos cement board.
  3. Cost
    Cost comparison differs based on thickness. For a 1” thick board, the price per square foot for Transite 1000 is approximately 7% higher than NAD-11. Conclusion: Transite 1000 is more expensive than NAD-11.
  4. Temperature
    Transite 1000 is non-combustible and can withstand operating temperatures up to 1000°F whereas NAD-11 is suitable for applications requiring continuous operation in temperatures up to 932°F. Conclusion: NAD-11 begins to break down at a lower temperature than Transite 1000.
  5. Density and Compressive Strength
    The density of NAD-11 is 109 pounds per cubic foot with compressive strength of 17,110 pounds per square inch. The density ofTransite 1000 is 98 pounds per cubic foot with compressive strength of 13,350 pounds per square inch. Conclusion: NAD-11 is heavier, stronger and more load-bearing than Transite 1000 which is lighter.
  6. Thermal Conductivity
    Transite 1000’s thermal conductivity is 2.40 btu-in/(hr-ºF-ft²) @ 250º F where NAD-11’s thermal conductivity is 2.57 btu-in/(hr-ºF-ft²) @ 212º F. Conclusion: Transite 1000 has a lower conductivity at a higher temperature. Said differently, less heat travels through Transite 1000 than NAD-11 at the same temperature.
  7. Handling, Engineering Controls
    If user operations generate dust, use process enclosures, local exhaust ventilation or other engineering controls to keep worker exposure to airborne contaminants below any recommended or statutory limits. Power equipment should be fitted with a properly designed dust collection device. SDS sheets are available upon request.
  8. Available Sizes & Thicknesses
    NAD-11 is available in 48 x 36 in boards with thicknesses of 0.25 to 3.0 inches whereas Transite 1000 is available in 48 5/8 x 96 5/8 in boards with thicknesses of 0.25 to 3.0 inches. Conclusion: Both are available in the same thicknesses; however, sheet stock of Transite 1000 contains an additional 20 square feet per board compared to NAD-11.

Mixing Brands?

There’s been a great deal of research and testing done on the topic of mixing compression fittings of different brands. What follows are the results of a recent test.

Tensile Pull Testing

The purpose of this test procedure is to establish that any intermixed combination of DK LOK® and Swagelok® individual components will provide leak-free performance synonymous with pure assemblies when subjected to various conditions inherent to the environments for which compression tube fittings are commonly exposed in practical every day installations.


Commonly asked questions.


What approvals does DK-LOK have?

A great message from our friends at DK-LOK Canada

How big is the DK-LOK line up?

From our friends at DK-LOK Canada

Can a diaphragm seal be repaired?

Diaphragm Seal Repair

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