The present invention concerns a system for sealing between a rock processing equipment, such as a vibrating screen and a stationary cover or other part. A sealing strip is arranged between the vibrating screen and the stationary cover. The sealing strip is attached to snap profiles fixed to the vibrating screen and the stationary cover, respectively. The sealing strip is fixed to the snap profiles by means of grip strips. The sealing strip is placed slanted in relation to the sides of the vibrating screen and stationary cover, respectively.