This part of ISO 10069 specifies the dimensions, in millimetres, of elastomer pressure springs intended for use in press tools, and the diameters, in millimetres, of counterbores for these pressure springs. It also gives information concerning materials and their hardness, and specifies the designation of springs that are in accordance with its requirements, together with the marking of their packages. Examples of suitable applications are given in Annex A. Dimensions of accessories (spring collars and pilot pins) are specified in ISO 10069-2.