+It has been produced from high quality polypropylene raw material and it has resistance to impact.
+Due to conical tightening, they remove faults in pipes that may be caused by dimentional differences and ovality up to ± 0.5 mm.
+They prevent alga and bacteria forming due to UV proof (ultraviolet beam) structure.
+O-rings are made of natural rubber and provide high leakproofness.
+It has a homogeneous and non-porous inner surface.
+It does not contain any foreign substance which can change the taste or the smell of the water.