7 1/16'' Annular BOP Pakcing Element Spherical Sealing Element Rubber Core
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                                            Annular BOP Pakcing Element- spherical sealing element/rubber core BOP Rubber core/packing element / sealing element for preventing gushing oil is a rubber core that is used to seal the blowout preventor in oil Wells.There are three kinds of ram type, ......                                         
                                            XIAN ATO INTERNATIONAL CO.,LTD
                                         
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