Waterproofing structure and wearable electronic device including same

A wearable electronic device comprising:

• a housing;
• a display disposed in the housing;
• a front plate covering the display;
• and
• a sealing member comprising a seal disposed between the housing and the front plate and including a first core portion, a second core portion and an elastic portion comprising an elastically deformable material surrounding the first core portion and the second core portion, wherein the elastic portion is configured to be at least partially elastically deformable;
• wherein at least a portion of the first core portion overlaps at least a portion of the second core portion in a first direction from an inner surface of the sealing member toward an outer surface of the sealing member.