Hello, it’s about the pipe connector of an exhaust system. Precisely this type/form: Click With cheaper systems (like now on the “problem case” I have the nerve that this place is not dense. The pipe ends were cleanly ground or new to the pot, the distance of the separation joint is > 10 mm and the tightening moment (printed on the connector) was noticed. The pipe ends are round, so not pressed in/gelled. Nevertheless, it blows off there slightly. With the usual sealing mass (“exhaust month paste” I don’t have long-term experience. These are initially dense, but at some point caused by the condensation humidity & vibration. Even if I dry the mass with the hot air dryer before starting the engine. Are there other methods to seal it in the longer term? Except welding… I can’t find the entry anymore, but it was once soaked on a gauze with the “water glass” (= exhaust paste/kettle kit etc.) sworn… unfortunately I don’t get the name from that thing.