ANNULAR PREVENTER
An annular preventer blowout preventer (BOP) that can seal off a wellbore for controlling and monitoring oil and gas wells. The BOP is a latch type annular preventer with a body, a inner, a piston, and a rubber packing element. The preventer seals around drill pipe and in some instances against an open well bore. A plurality of latches and inner screws secure the lid to the body and further prevent rotation.