How does the flexible waterproof casing solve the sealing problem between the casing and the pipe?

Flexible waterproof casing is also called through-wall casing, pre-buried casing, water stop casing, etc.. This product is a kind of pipeline pre-buried parts, its role is to waterproof, stop leakage, anti-settlement. Waterproof casing is divided into rigid waterproof casing and flexible waterproof casing.
 
Flexible waterproof casing mainly has a sealing tape to achieve the sealing of the pipe and casing, flexible waterproof casing is often used to do when the pool, it is the channel of the pipe to the pool. The two are mainly used in different places, flexible waterproof casing is mainly used in the human defense walls, pools and other places with high requirements.
 
Flexible waterproof casing is suitable for the pipeline through the wall where there is vibration or strict waterproof requirements of the structure of the hardware fittings, ordinary casing is difficult to seal, casing and pipe leakage between the casing and the wall is also prone to leakage. Waterproof casing only solves the leakage between the casing and the wall, but not the sealing between the casing and the pipe.
 
Flexible waterproof casing in addition to the external wing ring, there are internal file ring and so on, flange inside the wire, flexible waterproof casing can solve exactly two kinds of problems. Flexible waterproof casing is generally suitable for pipelines through the wall where there is vibration or a strict waterproofing requirements of the structure, casing part of the processing is completed, in its outer wall are brushed primer once, the general production enterprises are designed according to the prescribed standards.