The COSMAU slip ring comes with a variety of mounting configurations that make it easy to adapt it to your existing equipment, including:

Connect all fittings to housing prior to installation. Do not use rigid piping as this will compromise the life of the union. The hose should be flexible and have a slight bend. The hose should be properly supported & should not side load the union.

Attach your preferred method of anti-rotation. Anti-rotation must allow the union to find its center. Do not hard mount both the rotor and housing of the union. An anti-rotation fork placed around one of the housing fittings. An anti-rotation bracket mounted to the rear of the housing.

Fasten the rotary union to the machine.

3D shows how to mounting (for reference only)