Direkt abgeformte Seitendruckdichtung

摘要

A casing (10) for a HVAC system in an automobile for moving air comprises a plurality of sections (16-24), each of which is molded of plastic material. The sections (16-24) of the casing (10) are connected and sealed to one another at a plurality of joints (26). The improvement resides in the tongue (30) having a slot (34) extending into the distal end (32) thereof for splitting the tongue (30) into first and second forks (36) in frictional engagement with the side-walls of the groove (28). The forks (36) are compressed together by the groove (28) to narrow the slot (34) from top to bottom to retain the tongue (30) in the groove (28) and to seal the sections together.