PVC hard tubing (7,5 bar) 50mm - 1m. HS 39172390
This rubber sleeve fits on a standard tube of 50cm, and is used to connect two tubes diameter 50mm without gluing.
Make sure that - inside the rubber - the tubes are as close to each other as possible, and then tighten the tensioning rings. This connection is guaranteed to be leak-proof.
This rubber can, in addition to tubes of 50mm, be used to connect "imperial" tubes diameter 48.5mm.