The polyethylene pipe primary washer is produced in different sizes such as 12, 16 and 18 mm, each of which is used for the primary fastener of the same size. The primary clamp washer is used to connect the primary clamp to the pipe in a watertight manner and is used in the first step with a punch device and a silicone washer. These fittings are produced and supplied with a working pressure of 6 atmospheres.
