Ring blowout preventer

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Features

(1) Spherical rubber core is adopted, which has large rubber storage capacity, low frictional resistance when switching, strong well pressure assisting sealing ability, and can be exchanged with foreign rubber cores of the same type.
(2) The piston stroke is short, the height is low, and a wear ring is set.
(3) The hemispherical top cover is adopted, and there is no stress concentration when bearing.
 
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