Paste application system having a two-component cartridge with two axially shiftable feed plungers one hollow cylinder with an open front face and an at least partially closed front face, an axially mobile first plunger situated therein with two pestles attached to it another hollow cylinder that contains a manually shiftable second plunger and a liquid container, whereby the second hollow cylinder is connected or connectable to the liquid container in liquid-permeable manner by a first conduit means and a first non-return valve, and the first hollow cylinder is connected or connectable to the second hollow cylinder in liquid-permeable manner by a second conduit means and a second non-return valve whereby the two-component cartridge and the first hollow cylinder, arranged axially adjacent, with the axially mobile pestles are arranged in a pressure container and the paste application system contains a hollow space and liquid is present in said space.