Our reusable breathing circuit is produced of silicone and polysulfone which is approved by ISO-10993 (Biocompatibility) and ISO-5356-1. In order to increase its duration and intensity, the silicone tubes are made in one piece. You may choose your preferable specification, such as length of limb and quantity of limb and water trap. We will make a set of reusable breathing circuit which you really need per your request.