The present invention allows the sealing of the fuel to be integrally formed on both sides of the body of the benzo nipple, so that in the case of the prior art, the mounting of the seal, which was necessary when assembling the eye joint bolt for the connection of the fuel line, can be eliminated. To the benzo nipple of the LPI fuel system,;Through-holes are formed in the body to assemble the eye joint bolts so that the fuel hoses can be connected in the middle of the fuel system using the eye joint bolts, and a connection port for connecting one end of the fuel hose to one side of the body protrudes. In the benzo nipple which becomes,;Mounting grooves having a predetermined depth are formed in the circumferential direction on both side surfaces of the body where both ends of the through hole are positioned, and the mounting groove has a wide portion and a narrow portion having a wide portion and a narrow portion so as to form a 'b' shape on one side of the cross section. The seal will be seated,;The outer surface of the narrow portion of the seal is characterized in that formed in the inclined surface in the direction that the thickness gradually decreases from the inner diameter side toward the outer diameter side.;Benzo nipple, fuel hose, eye joint bolt
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