The Girol N series is divided into three categories:for STEAM: the rotary part and flange are made of stainless steel, for HOT OIL: the entire rotary union is made of cast iron, for BOTH CATEGORIES: the seal and bearings are made with impregnated graphite, The housing, a fixed part, has cylindrical BSP thread while the shaft, the rotary part, has conical BSP thread.
