Pump and metering system for the manual application of one- or two-component sealants. Static precision mixers ensure optimal mixing of materials. The extended sealing bracket enables optimized and smooth sealing also of larger glass units. The hydraulically driven base barrel pumps together with the metering system are suitable for a high delivery rate of all well-known sealant compounds. The sealing system can be flushed in just a few steps using the integrated base pump.