High-sealing dustproof and waterproof lock

The utility model relates to a high-sealing dustproof and waterproof lock which comprises a lock cylinder, a lock shell is arranged outside the lock cylinder, a lock shell sealing ring is arranged at the joint of the lock cylinder and the upper portion of the lock shell, a lock cylinder sealing ring is arranged at the joint of the lock cylinder and the interior of the lock shell, and the lock shell is fixedly connected with the lock cylinder. The outer diameter of the lock cylinder sealing ring is smaller than that of the lock shell sealing ring, and the thickness of the lock cylinder sealing ring is larger than that of the lock shell sealing ring. According to the high-sealing dustproof and waterproof lock, the top of the lock shell is wrapped by the lock cylinder, the lock shell sealing ring is arranged at the joint of the lock cylinder and the upper portion of the lock shell, tiny dust and water can be effectively prevented from entering, and the lock cylinder sealing ring is arranged at the joint of the l