FERMAPOR® K31 is Sonderhoff Chemicals’ brand name for the 2-component polyurethane systems used for the production of mixed-cell, flexible foam seals.
They are directly foamed onto the part with the aid of mixing and dispensing systems and FIPFG sealing technology (Formed-In-Place Foam Gasket).
FERMAPOR® K31 systems consist of a basic resin (A-component) and a hardener (B-component) which are mixed to a prescribed ratio and react together in the dispensing head’s mixing chamber. After application to the part a soft foam seal forms in a few minutes with an even distribution. The flow behaviour, reactivity and colour of the components of FERMAPOR® K31 seals are freely adjustable depending on the intended use. Depending on the recipe, FERMAPOR® K31 foam seals can take from approx. 20 minutes up to about 12 hours to cure fully at room temperature on the part. After this, construction can continue.
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The sealing function is reached with a compression of approximately 30-60% of the cured seal. In this way the part is protected from damp, dust and the influence of the weather.