Cores and dismountable type of filter-drier shells produced in Aike is replaceable. Cores are individually packed in metal cans, It and hermetically packed against grease moisture and dirt. Includes the LX suction line cores series and the DR liquid line block series. The method of mounting the cores or felt elements on the end plate by means of tie rods makes them very easy to install and remove. Detailed instructions are printed on each can.