The utility model discloses a flexible sealing wall-penetrating
pipe fitting, and relates to the field of
thermal insulation pipes. The sealing device comprises a working
pipe fitting, a valve well wall and a sealing piece, the sealing piece comprises a fixing ring, two rubber bushings are arranged on the inner side of the fixing ring, a containing cavity is formed between the two rubber bushings and used for being filled with waterproof sealing glue, a glue injection opening is formed in the top of the fixing ring, and the sealing piece is connected with the rubber bushings. The rubber
bushing is arranged in the middle of the fixing ring, the rubber
bushing has elasticity and can adapt to working
pipe fittings of different sizes, the application range of the sealing piece is widened, the rubber
bushing is matched with the waterproof
sealant filled in the rubber bushing to fill a gap between the preformed hole and the working
pipe fitting, the sealing effect is enhanced, and the sealing effect is improved. And the elasticity of the rubber bushing can absorb the vibration of the pipeline, so that the influence of the vibration of the pipeline on the sealing element is reduced, and the shockproof performance is improved.