Given the precision required for these parts, using genuine OEM parts is usually recommended to prevent "stiction" (static friction) or premature failure.
Most ADN-related hardware adheres to international ISO standards, ensuring that a "426 C" part from one batch will fit perfectly into a machine built five years ago. 4. Maintenance and Replacement
In a manufacturing context, the numbers following the prefix usually denote the piston diameter (bore) and the stroke length. A "426" designation often points to a custom or specific configuration within the ISO 21287 standard.