Ring filter element assembly including two ring filter elements rotationally aligned relative to each other

A ring filter element assembly comprising:

• a first ring filter element comprising a first filter medium body surrounding a first interior;
• a second ring filter element comprising a second filter medium body surrounding a second interior, wherein the second ring filter element is received at least partially in the first interior of the first filter medium body of the first ring filter element;
• wherein an outer wall surface of the second filter medium body of the second ring filter element and an inner wall surface of the first filter medium body of the first ring filter element adjoin each other in an interface region;
• a positioning device arranged in the interface region and configured to angularly position the first ring filter element and the second ring filter element relative to each other;
• wherein the positioning device comprises an engagement element, wherein the engagement element extends radially outwardly and engages a first counter engagement element of the first ring filter element and/or the engagement element extends radially inwardly and engages a second counter engagement element of the second ring filter element.