Abstract: A packaging and display carton is constructed of first and second sheets of durable, flexible transparent material of a generally rectangular configuration having a double wall cavity packaging chamber formed in one of the sheets with vertically extending wall and a closure cap with a display window formed in the other sheet wherein the outer walls of the packaging chamber and the inner walls of the display cavity have an interference fit for frictionally engaging and sealing the chamber and retaining the part in the closed position by friction and vacuum. An intermediate labeling and display card or sheet is disposed between the two sheets and includes an opening for receiving the walls of the packaging chamber therethrough. Vacuum locking devices in the form of snug fitting protrusions and sockets for holding the sheets together are disclosed.