The surface of the sponge door cover inflatable door seal is made of high quality neoprene fiber rubber high wear-resisting material, which can meet the service life of not less than 30,000 times. The two sides and the top air bags firmly wrap the tail of the carriage after inflating. The air bags on both sides are L-shaped structure to ensure the formation of a tight seal between the bottom of the air bags on both sides and the wall. The width adjustment range is up to 1600mm, and the length adjustment range of the top air bag is 1200-1500mm, which is suitable for all kinds of truck chassis height. It can also work stably in bad weather (-30C ~60C). It is suitable for a variety of models with the best sealing effect and the maximum reduction of energy loss during loading and unloading. The inflatable door seal is especially suitable for warehousing, logistics and cold storage with high sealing requirements.