MVX SwellPro FTR is made of hydrophilic water swellable synthetic rubber. It acts as an external watertight sealing for spacers against penetrating or pressing water that infiltrates on the outside of the spacers.

 

Penetrating water in contact with MVX SwellPro FTR will immediately be stopped by its fast and strong swelling action.

 

For internal sealing of hollow spacers, we recommend MVX SwellPro FTP.