According to EN 45545, in the event of a fire, the protection and safety of passengers and personnel should be awarded the highest priority. To ensure this, it is first and foremost necessary to prevent the spread of fire and the development of smoke gas. Kaimann rail products are flexible, closed-cell, elastomeric foams that have been developed specifically for use in railway vehicles. Our products conform to hazard levels HL2/HL3 of requirement class R1.​ In the following view, we have listed exemplary applications in a carriage. Please contact us directly for advice on an individual project.​


Cold air routing

Kaiflex rail cold air routing

When the train is full to capacity, the ambient air in particular must be conditioned continuously. This means that air ducts must be protected against heat losses and condensation must be prevented from developing on components . Their outstanding thermal values make Kaiflex insulation materials the ideal complement to the carriage ventilation system. The elastomers are dust- and fibre-free, moisture-resistant and prevent the development of bacteria that can be distributed to the carriages by the ventilation.


Fresh water tank

Kaiflex rail fresh water tank

Fresh water of a consistent quality must be available at all times for sanitary facilities and the onboard restaurant. To ensure this, the water temperature must be maintained continuously and the development of pathogens such as Legionella prevented. Kaiflex insulation materials offer excellent protection against the development of mould and bacteria. Jacketing of the tank prevents the formation of condensate and corrosion as well as guaranteeing a constant water temperature. 


Side walls and supply lines

Kaiflex rail Side wall and supply lines

To be able to create the most comfortable and pleasant environment for passengers during the journey, a constant ambient climate must be ensured and external noise reduced to a minimum. Kaiflex insulation materials provide both thermal and acoustic insulation between the wall shells. The closed-cell structure and flexibility of Kaiflex rail LSLT tubular material makes it perfect for insulating supply lines efficiently.


Warm air routing

Kaiflex rail warm air routing

To use the energy supplied to the carriage economically, air routing systems must be insulated efficiently. The closed-cell structure of Kaiflex rail products and their resultant low thermal conductivity make a significant contribution to reducing heat losses sustainably. The insulation material also prevents the development of condensation and mould and suppresses the flow noise of the heating system inside the carriage.



Kaiflex rail floor

Due to the relatively high air humidity in the passenger carriage and the temperature difference between the carriage and outside, condensation collects on the floor of the carriage, which causes rust to develop. The moisture resistance and closed-cell structure of Kaiflex rubber insulation materials combined with drainage keep the materials dry and prevent corrosion from forming under the insulation.

Thickness insulation calculator Kaicalc

Those who pay attention to careful planning, workmanship and quality in a project design, can avoid costly system malfunctions or even failures and can thus keep operating costs stable in the long term - or even reduce them sustainably. Decisive for this is both the choice of the right insulation material and the correct calculation of insulation thickness. Our insulation thickness calculator Kaicalc provides reliable support around the clock.

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