Very fast reacting, two-component polyurethane resin with short reaction time



WILLPUR® WS  is an immediately setting 2-component injection resin, free of CFCs and halogens, for sealing and consolidating in water-bearing zones, especially against water under pressure.




  • fast reacting PU resin with short reaction time and high final strength 
  • foams easily on contact with water
  • adaptable injection system with addition of WILLADD® THIX and WILLADD® FAST
  • in combination with the above additives it reacts as an expanding, foaming waterstop system

Main usages:

  • or the consolidation of unstable soils with disturbed geology
  • stops unexpected water inflows
  • stops water seepage and is used to seal underground structures, shafts, as well as workshops, dams and tunnel linings


Technical data                       

Cure time (20°C)20 ± 5 (s)
Foam Factor (without water)1
Reaction temperature < 140°C
Volumetric mixing ratio A:B1:1
Compressive strength88 MPa  
Adhesive strength4 MPa
TDS & MSDS on request 


 Packaging form 

Double chamber cartridge 400mlComponent A: 200 ml
Component A: 200 ml
Double chamber cartridge 1500mlComponent A: 750 ml
Component A: 750 ml
Tin Canisters 20lComponent A: 21 kg
Component B: 25 kg
Steel Drum 200lComponent A: 210 kg
Component B: 250 kg
Other delivery forms on request 


Dipl.-Ing. Karl-Heinz Lindenbauer

Head of Sales Civil Engineering & Mining (DACH region)

Phone:+49 231 9640 413
Mobile:+49 173 931 22 43

Dipl.-Ing. Paulo H. Tsingos

Head of Export Civil Engineering & Mining

Mobile:+49 173 940 58 40

Dipl.-Ing. Sergej Kremer

Internal Sales Civil Engineering & Mining East Europe

Phone:+49 231 9640 312
Mobile:+49 176 576 723 69
Fax:+49 231 9640 232

Peter Simon