Abstract: The disclosure refers to a packaging container (81, 281) comprising a tubular housing (83, 283) and a plunger stopper (82, 282) moveable within the housing (83, 283), wherein at least a section of an outer surface of the plunger stopper (82, 282) being in contact with an inner surface of the housing (83, 283) comprises a silicone-free coating (88, 288) which reduces break loose and/or gliding forces. The disclosure further describes a system comprising this packaging container (81, 281) and a formulation (87, 287) within the packaging container containing one or more pharmaceutically active compound and/or carrier as well as a drug delivery device comprising this system.