4-passage rotary union designed for a custom offshore umbilical hose reel system. Features include a specialized ATEX-certified explosion-proof electrical slip ring and all-stainless steel construction. This unit is meant for the marine industry. Has 4 - 5 passages, which size goes from 9.53 mm - 12.67 mm The rotation speed (RPM) to be used are 0 to 24 RPM. It handles pressure (PSI) of 6,500 PSI [448 BAR]. The material of the product is stainless steel, the through bore is possible to have in 25.4 mm to 73.7 mm. Possible to integrate with explosion proof and slip rings.