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Leakproof inflatable seals are a new type of seal made from silicone rubber, featuring a hollow structure within the product. These seals are designed for use with compressed air sources and utilize inflation and deflation to alter the structural shape of the silicone rubber seal. Due to the flexibility of silicone rubber, the inflated seal is malleable. After contacting the sealing surface, the expanded seal undergoes flexible curve deformation, allowing it to seal gaps that are straight or curved in shape. Upon deflation, the seal automatically retracts to its original shape, restoring the equipment gap. They can quickly achieve both sealing and unsealing, with repeated inflation and deflation capable of reaching up to one million cycles. In operation, the internal gas pressure of the seal body ensures high sealing strength, resulting in excellent airtightness and sealing performance. The hollow structure of the seal body is designed with different cross-sectional shapes based on the seal gap size, fluid pressure, and frequency of expansion and contraction. Similar to solid rubber seals, inflatable seals can achieve both radial and axial sealing for equipment.