Tmax-DryTec

The first high-temperature insulation that also protects against water ingress

  • Water-repellent
  • High-temperature resistance
  • Extended durability
  • Less deposits of salts, dirt and dust particles
  • Improved insulation performance
  • Lower emissions and fuel consumption
  • Thermamax

„Wet insulation is no insulation at all...“
Fibrous insulating material can easily get soaked in wet conditions or during engine washing. The result is a delayed light-off performance as the system loses useful heat in drying the fibre. Fuel consumption and emissions are therefore especially high during this phase. The durability of the insulation system is also adversely affected due to the salt, dirt deposits and water accumulating in the fibre. Particularly affected are insulation systems positioned under the vehicle e.g. around the DPF-, SCR-Modules, silencers or thermo-acoustic insulations. This latter type are defined by a perforated outer shell and therefore easily damaged and prone to lose their effectiveness. 

Tmax-DryTec. The first high-temperature insulation that also protects against water ingress.
Tmax-DryTec protects fibrous insulating material against water ingress giving it increased performance and longer life. Simpler compliance with future emission standards, lower fuel consumption, and an easier installation. Tmax-DryTec can be employed on all fibres used by Thermamax.

Extended durability and improved insulation performance
The effects of water spray mean that various salts, dirt and dust particles can reach the insulation. The so-called hydrophobic fibre material rejects the water and prevents deposits forming. The fibre stays clean, extending its durability and ensuring the maximum insulating efficiency. An additional benefit is the avoidance of expensive, close-tolerance welding that would otherwise be required in manufacturing the insulation system.

Lower Emissions and Fuel Consumption
Thanks to the shorter warm-up period the light-off performance is better. Future emission standards are met more easily and fuel consumption is lower.

That’s how we keep out the water...
Standard insulating fibre vs Tmax-DryTec: hydrophobic fibre is water-resistant and water drops are virtually undetectable on the fibre's surface
*a Standard Insulating Fibre - Non-hydrophobic fibre quickly absorbs water completely.
*b Tmax-DryTecHydrophobic Ffbre is water-resistant and water drops are virtually undetectable on the fibre surface.
* A unit of mass for the hydrophobic effect of a surface is the contact or edge angle. The greater the angle, the more pronounced the hydrophobic effect.

Our salt spray test has shown that salt deposits were less than 2.5 g / m² using the Tmax-DryTec Fibres (7 mm thick), whereas deposits of 50 g / m² of crystallized salt were present in the insulating material of the conventional system.*

Salt spray test results in accordance with DIN EN ISO 9227: 95% less deposits

*Salt spray test results in accordance with DIN EN ISO 9227

Impressive „dry“ figures.
The advantages of hydrophobic fibres are well established. Test measurements show that Tmax-DryTec insulation systems provide an improved light-off performance. The comparision of water absorption shows clearly that fibre used in traditional systems absorbs 400 times as much as in the Tmax-DryTec technology.

Results of the test cycle with passenger car, 3L Diesel

A wet insulation increases the warm-up time of the exhaust line and has a negative influence on the performance of the exhaust aftertreatment system.**

** Test cycle with passenger car, 3L Diesel 


Absorption behaviour of conventional fibre vs Tmx-DryTec fibre used in traditional systems absorbs 400 times as much as in the Tmax-DryTec technology
Absorption behavior conventional fibre vs. Tmax-DryTec***

*** Measurement results from the Research Institute for Heat Protection e.V. München