The bellows gripper has a silicone or EPDM bellows which is compressed by the motion of the piston rod. This deforms the bellows outwards. Increasing the bellows diameter clamps the payload to the inner contour. This allows pipes or bottles, for example, to be gently gripped from the inside. Increasing the bellows diameter seals the contour is also positively and completely. It is possible to select a variant with a through-hole and thus apply a vacuum. This makes it possible to check whether the gripped object is leak-free.