15 EXPANSION SEALANTS AND THEIR APPLICATIONS SPESAN expansion sealants are based on silane modified polymers which are distinguished by their ability to be applied on damp surfaces High viscosity systems can even be used under water The systems develop excellent adhesive strength on load bearing grease and dustfree surfaces SPESAN expansion sealants have the following special properties Hardening under the influence of moisture Single component processing Solvent free Odourless Paintable High degree of chemical resistance Excellent resistance to weathering and aging Low shrinkage The systems are available in two resin variations which correspond to an expansion of 10 for the final hardness of Shore A55 and 25 for a final hardness of Shore A25 Integration of pipe into the shaft Sealing of the shaft ring joints

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