FIELD: oil production industry. SUBSTANCE: well head sealing gland has base, cover, and self-locating ball head. Also provided are upper, middle and lower seals made in the form of hollow truncated cone. Upper and middle seals are accommodated in holder made in the form of hollow cylinder. Inner surface of cylinder narrows as taper towards center of cylinder. This ensures intimate and tight contact between seals and inner surface of holder. Space between seals is filled with oil for lubrication of sealing gland rod. This improves tightness of well head sealing gland. EFFECT: high efficiency. 1 dwg
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