Anti -drop is rubber packing pad for flange

The utility model provides an anti -drop is rubber packing pad for flange, including annular rubber packing ring, the external diameter of rubber packing ring is greater than the external diameter offlange joint end, and the one end of rubber packing ring is provided with spacing protruding muscle, and the outward flange of rubber packing ring is for belonging to the barb structure that the end set up towards spacing protruding muscle, and the other end of rubber packing ring is provided with a plurality of seal convex rib, just spacing protruding muscle, barb structure and seal convex rib are the loop configuration coaxial with the rubber packing ring. When solving present rubber gasket, accurately install rubber gasket in the pipe network system very difficultly, make troubles for the construction, delay the construction progress, and rubber gasket comes off easily, loses, lead to the fact the economic loss scheduling problem when plaguing for pipe network maintainer. The utility model belongs to irrigate t