Method for examining the closeness of a seal, as well as a penetrating element for use in the method

摘要

In a method for investigating whether a seal 11 leaks in a joint which is gastight at the bottom 9, for example, a joint 3 closed at the bottom in a floor slab 14, gas is blown between the seal 11 and the bottom 9 of the joint 3 by means of a device 13 stuck through the seal 11. The upper surface of the seal 11 is soaped and by observing the formation of soap bubbles it can be determined whether the seal 11 displays any leaks and where they are situated. The device 13 has a hollow rod which is provided with a coupling piece 19 for connecting to a gas hose at one end, and at the other end the rod is closed and has a sharp point. Near the closed end are a number of openings 17 in the side wall of the hollow rod for the flow of the gas.