Male luer lock connector

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 seal, 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.