Mechanical manual packer, usable as a mouthpiece and designed for contact injections, to block water flow in tunnels, and consolidation of walls by gravity. It is used in perforations of diameter from 35 to 128 mm.

It is applied with a lance of variable length from 1 to 6 meters, to reach the tunnel vault and expand the shutter rubber.

The packer is equipped with a non-return valve and has a rubber that can be disposable or reusable.