Growth sections can have rubber seals that quickly become unusable. If this rubber part is embedded in the case, then you will have to replace the entire section, so you should look for such a plastic drain where the seal is removed from the groove.
Growth sections can have rubber seals that quickly become unusable. If this rubber part is embedded in the case, then you will have to replace the entire section, so you should look for such a plastic drain where the seal is removed from the groove.