Patent ID: 6872304

Claim:
A ring filter element with a stopper plug, in particular for a lubricating oil filter of a combustion engine, for insertion into a filter housing with a filter housing barrel and an axially removable filter cover, in which the stopper plug in the state inserted into the closed filter housing, closes off an aperture which exists in the filter housing barrel, said aperture being aligned along the same axis as the stopper plug, wherein the stopper plug ( 3 ) is held on the ring filter element ( 1 ) so as to be aligned along the same axis as said ring filter element ( 1 ) or parallel to said ring filter element ( 1 ), so as to be slidable within the ring filter element; the holding arrangement makes it possible to slide the stopper plug ( 3 ) by means of an actuating means ( 11 ) which acts upon said stopper plug ( 3 ) by contact, from outside the ring filter element ( 1 ).