Spring steel ball type sealing-applying lock

The invention relates to a sealing-applying lock, in particular to a spring steel ball type sealing-applying lock. The invention aims to solve problems of high making cost and low production efficiency of the sealing-applying lock with a traditional structure due to complicated structure and high material consumption. The spring steel ball type sealing-applying lock comprises a lock body and a locking rope and also comprises a spring, a first steel ball and a second steel ball, wherein a blind hole is arranged in the upper end surface of the lock body; one end of the locking rope is fixedly inserted into the blind hole; a through hole is also arranged in the upper end surface of the lock body; axes of the blind hole and the through hole are parallel to each other; an inclined hole is arranged in the lower end surface of the lock body; the inclined hole is communicated with the through hole; the first steel ball, the spring and the second steel ball are mounted in the inclined hole in sequence along an open en