Seals of annular blowout preventers

The seals are designed to be used in the annular (universal) blowout preventers and may be delivered together with the preventer and under a separate order, as well. They are manufactured in compliance with technical specifications ТУ 3661-023-39048342-2005 in version K1 / K2 according to GOST 13862-90.

Design Features:

·         the spherical seals as compared with the conical ones are less wearing when pulling the pipe string with the socket-and-spigot joints;

·         they ensure the reliable closing in the absence of pipe string.

                                                                                                                Nomenclature and Application of Annular Preventer Seals