Instructions for use: 1, flexible waterproof sets generally applies to pipe through the wall of the subject to vibration or leak water requirements structures. 2, the rigid waterproof casing generally applicable to the pipe through the wall of the requirements of the general waterproof structures. 3, flexible and rigid waterproof casing through the wall at the wall, in case of non-concrete walls should switch to the concrete walls of the casing and must once poured solid inside walls.