The brass Oyster™ converter is an easy to fit termination connection for use on heating and potable water systems. It is used to connect copper tube to female threaded fittings, radiators and valves. The female fitting needs to have a flat sealing face. If it does not, a traditional thread sealing method should be used. Manufactured from brass, it features two EPDM ‘O’ rings, one sealing the tube o.d. and the other the fitting face. The Oyster is retained on the tube by dimpling the tube end with the appropriate pliers.