The annular BOP mainly consists of a body, a header, a rubber core, and a piston. The inner rubber core is interchangeable. While the annular BOP can be used independently, it normally works with a single or a double BOP. It can seal the drilling tool or wellbore efficiently, preventing oil well blowouts. 

*Adopts sphere rubber core or tapering core structure.

*The top and bottom connection is flange or thread.

*Hydraulic Pressure:8.4~10.5MPa.

*Hydraulic connection:NPT1.

*A Media: Oil gas & drilling fluid containing H2S.

*Working temperature: -29~121°C.