Method of producing a catalytic converter

A method of producing a catalytic converter, comprising:

• providing a shock absorbent member wrapped around an outer periphery of a catalyst substrate;
• inserting the catalyst substrate and the shock absorbent member into a cylindrical workpiece;
• fixing the cylindrical workpiece to prevent the cylindrical workpiece from being rotated about a longitudinal axis thereof;
• spinning at least a portion of the cylindrical workpiece covering at least a portion of the shock absorbent member, by means of a plurality of spinning rollers, which are evenly positioned around the outer periphery of the cylindrical workpiece, and which are revolved about the axis of the cylindrical workpiece along a common circular locus, and moved in a radial direction of the cylindrical workpiece;
• and
• moving the plurality of spinning rollers in an axial direction of the cylindrical member to uniformly compress the shock absorbent material along a longitudinal direction of the shock absorbent material and to simultaneously uniformly reduce a diameter of the cylindrical workpiece around its circumference along at least a part of the shock absorbent material, and thereby hold the catalyst substrate in the cylindrical workpiece.