Abstract: A packing, interposed between respective ends of electric wire tubes serving as tubular members opposed to each other, includes a main body and an elastic member. The main body is inserted through inner-diameter-openings of the respective ends of the electric wire tubes, respectively. The elastic member is situated substantially at a center of the main body and the respective ends of the electric wire tubes are abutted against the elastic member. The electric wire tubes joined with each other through the packing are inserted into the body constituting the coupling. Then, grip portions of the body are forced into a grip case. The body is thereby decreased in diameter, and hence the electric wire tubes are fastened in a biting manner by the body.

Abstract: Provided is a packing used for a screwless coupling used for coupling two tubes such as electrical wire tubes to be coupled with each other, which is capable of exerting a water-proof effect and making fitting of the packing as easy as possible. A packing (1), which is interposed between respective ends (P1 and P1) of electric wire tubes (P and P) serving as tubular members opposed to each other, includes a main body (2) and an elastic member (3). The main body (2) are inserted through inner-diameter-openings of the respective ends (P1 and P1) of the electric wire tubes (P and P), respectively. The elastic member (3) is situated substantially at a center of the main body (2), and the respective ends (P1 and P1) of the electric wire tubes (P and P) is abutted against the elastic member (3). The electric wire tubes (P) joined with each other through the packing (1) are inserted into the body (4) constituting the coupling. Then, grip portions (40) of the body (4) are forced into a grip case (5).