Frequent phenomena are observed that after cleaning the siphon begins to leak in the place where the thread is located, which connects the siphon and sump between. To solve such a problem, it is only worth replacing the old rubber sealing ring new, since the old is deformed eventually. Well, if this option does not help, then you can use a sealant that needs to cover the joint, which connects the siphon and sump, you can also use ordinary plasticine as a sealant.
