Self -adaptation blanking plug

The utility model provides a self -adaptation blanking plug, including elasticity obturating element, elasticity obturating element is along vertical including first side and the second side relative with first side, the second side is compared with first side when placing in treating the plugging hole way and is more approached the pore outside, and obturating element is first radial external dimensions under free state, be the second radial external dimensions bigger than first radial external dimensions under expanded state, this blanking plug still includes the first threaded component of one side male and opposite side and the threaded component of first threaded component complex second in obturating element's first side is inclined from obturating element's first side and the second side with the second, this blanking plug is constructed and is made obturating element expand to the radial external dimensions of second from first radial external dimensions through one in the threaded component of first