Abstract: A high-pressure tubing set includes a fitting and tubing having an end. The fitting has opposing ends and an aperture extending from one of the ends to the other end. The aperture has a tapered portion extending inwardly from one of the ends. The tubing end is received in the tapered portion and is chemically bonded thereto on an inner surface of the tapered portion, and defines a bonded portion, at a distance spaced from an end of the fitting, the end defining a beginning of the tapered portion. Fluid pressure within the tubing urges the tubing between the beginning of the tapered portion and the bonded portion outwardly, increasing the strength of the connection between the fitting and the tubing.