The GEROtherm® PACKER is a sealing system used in boreholes for geothermal probes. Patent EP 1865 146 B1, fabric hose available separately in lengths of 3 m to 100 m.
Concluding report EWS sealing systems for the investigation by EnergieSchweiz, Swiss Federal Office of Energy (SFOE).
Water protection for geothermal probe boreholes.
Overview of sealing systems for protecting groundwater.