2.The bulge of the throatbush has its processing exactness limitation.Sometimes,it could not match the seal ring very closely,which may lead the leakage.Under this situation,we use another thin rubber piece.
3.Get the round ring from the thin rubber piece.Make the rubber circle ring match the fillister of the suction seal ring well,the frame and the dimensions.Put the circle ring into the fillister of the suction seal ring and put the complete one on the throatbush.
4.We are sure the leakage is just due to the suction seal ring.Therefore,we offer the solutions of the problem this way.