To provide a joint superior in various characteristics such as oil resistance, heat resistance, ozone resistance, properties of sealing and connection while reducing cost.

This joint 30 is provided in a suction passage between a cylinder of an engine and a carburetor and is adopted to a connection part of a suction pipe to be a flow passage of air-fuel mixture supplied by the carburetor, and is composed of joint main bodies 31a, 31b made of nitrile rubber having chlorine resin added, fastening parts 32a, 32b formed on one cylinder side in an axial direction of the joint main bodies 31a, 31b for fastening the joint main bodies 31a, 31b on a cylinder, and seal part 33a, 33b made of nitrile rubber formed on a fastening surface of the fastening parts 32a, 32b and the cylinder for sealing the fastening surface.