FIELD: oil and gas production, particularly blow-out preventers thereof.
SUBSTANCE: seal holder comprises depression for at least partial seal installation. The seal provides fluid-tightness between bonnet structure and preventer body. The first connection rod is connected with inner surface of seal holder so that the rod extends therefrom. The first connection rod has fastening means arranged near remote end thereof and adapted to be connected with the first fastening device. Seal holder may be removed from bonnet assembly if the first fastening device is disconnected from fastening means.
EFFECT: increased simplicity and efficiency of seal replacement.
7 cl, 8 dwg
