Flexible one-component resin for gap injection


Product description

WILLSTOP® Flex is a dark brown water-reactive liquid. The final product is characterized by high flexibility and elasticity. When it comes into contact with water, it expands and quickly cures to a tough, flexible, closed-cell polyurethane foam. The reactivity depends on temperature and the amount of accelerator WILLADD® Flex.


Technical specifications                       

Start of reaction at 25°C45
End of reaction at 25°C175
Foam factor10 - 15
TDS & MSDS on request 



By appropriate addition of the catalyst, the resin setting speed can be adjusted to meet the requirements of temperature and processing time. Stir catalyst in an appropriate amount into the resin. Start injection with the mixed material.


Packaging units

Metal can 20 l20 kg
Metal can 5 l5 kg
Metal can 1 l1 kg 
Other packaging units on reques 


Nicolas Houy

Head of Business Development Sewer Repair

Phone:+49 6873 9999 216
Mobile:+49 173 146 27 32

Anna-Maria Nalbach

Assistant to Head of Business Development Sewer Repair

Phone:+49 6873 9999 137
Mobile:+49 162 683 15 45

Jürgen Scholz