CAUTION: DSTI does not recommend mounting the rotary union with both the shaft & housing components solidly bolted into place. One of the two components should be mounted in a manner that allows for some movement in the event of misalignment. Using only the supply lines or hoses to fix the stationary component in place is also not recommended. An anti-rotation arm that attaches to the stationary part of the rotating union assembly and rests against part of the equipment framework is recommended. To mount shaft-mounted units with O-ring face seal glands (-OF option in product code): 1) Make sure the rotating union shaft face & equipment mounting surface is clean and free from dents or chips to insure proper installation. Equipment pilot bore needs to be concentric to the center line of the rotating union shaft to assure proper function. 2) Install face mount O-rings into seal gland on shaft face. General assembly grease can be used as needed to hold O-rings into place during assembly. 3) Align rotating union shaft with equipment pilot bore and flow passages, then insert into place. 4) Bolt assembly into place using tapped holes or optional mounting flange (see below) on rotating union face. To mount shaft-mounted units with threaded connections: 1) Make sure all fittings are properly tightened & pipe thread tape is used as required. Equipment mounting surface needs to be concentric to the center line of the rotating union shaft to assure proper function. 2) After all fittings are in place, bolt assembly into place using tapped holes or optional mounting flange (see below) on rotating union shaft. Optional Mounting Flanges: DSTI shaft and housing mounting flanges are available for purchase. To order, contact a member of our Sales Support Team. Customer Interface Adapters: DSTI does not manufacture customer interface adapters for stock products. If ordering a custom rotary union, DSTI can design the union to integrate directly into your equipment.