API Stop Collar for Casing Centralizer,Stop Collar Centralizer,Drill Stop Collar  

Stop ring also called spacing ring, locking ring, brake, etc., It's using to limit on the casing centralizer or cement umbrella, sliding, covered wire, set screw type and jewels three.

The stop collar or stop ring can be installed on any position on casing to limit the axial movement of centralizers and cement baskets.

Stop collar or stop ring is used to hold centralizers or cement baskets on any position of casing, which ensures the positions of centralizers or cement basket to meet the design. The stop collar or stop ring are available in three types: knock-on type , Spiral nail type and Set screw type. The stop collar or stop ring can be installed on any position on casing to limit the axial movement of centralizers and cement baskets.