Black screw cap made of PPS with PTFE/FPM sealing, movable reduction body made of PTFE for transition to GL threads. The body can be moved independently from the screw cap so that the completely assembled reduction can be removed and fixed on another vessel without the risk of disarranging the tubing or cable. The product is only exposed to PTFE. from screw cap GL 45, on screw neck GL 18, Max. tubing O.D. mm 1,6 - 10,0, Height from lip seal 26,5