Male luer lock connector

A connector for medical use comprising:

• a body joined to a line or adapted to be connected at one end to a tubing in which a fluid flows,
• a male luer lock connection comprising a base mounted rotatingly on the body and cooperating by friction with the body, without any possible translational movement, the base being joined to a hollow tubular body, having a threaded inner surface and a central male luer cone,
• wherein the connector has no additional element that acts as a seal between the body and the base, and an outer surface of the body and an inner surface of the base cooperate by friction, the outer surface of the body having at least two successive lengths, respectively:
• a first length in the form of a portion of sphere having diameter d1, and
• a second cylindrical length having diameter d2 smaller than d1;
• and
• the inner surface of the base having:
• a first zone in the form of a portion of sphere having a diameter d7 substantially equal to d1, and
• a second tubular zone, having a diameter d3 slightly smaller than d2;
• and
• wherein the outer surface of the body further includes an additional cylindrical length having diameter d4, the additional cylindrical length preceding the first length, the diameter d4 being substantially equal to the diameter d1 of the largest cross section of the portion of sphere.