An apparatus for use in the oilfield industry, the apparatus comprising: a marine diverter having a marine housing having at least one diverter outlet, and a diverter seal insert, wherein the diverter seal insert comprises: an annulus or bearing assembly adaptor, said annulus or bearing assembly adaptor having an outer surface and an inner surface, said inner surface defining a passageway about a central axis, wherein the outer surface and the inner surface are radially spaced from one another and define a wall, and wherein the wall has a first end portion and a second end portion axially spaced from the first end portion, and wherein the first end portion includes a flange; an annular packer seal mounted within the marine diverter; a first rotating control device including an outer race, a rotatable inner race, and at least one rotatable seal which is attached to the inner race, which extends axially beyond the outer race and which can rotate against a drill pipe under a differential pressure; and an assembly for fastening for connecting the marine diverter to the first rotating control device, wherein said assembly for fastening is configured to maintain the first rotating control device oriented axially with the drill pipe and a riser; wherein the outer race of the first rotating control device is at least partially inserted into the longitudinal passageway, wherein the outer race comprises an enlarged diameter portion, wherein the assembly for fastening is configured to fasten the enlarged diameter portion of the outer race to the flange of the diverter seal insert of the apparatus, characterized in that the annular packer seal is configured to displace radially inward into sealing engagement with the outer race of the first rotating control device while the inner race of the first rotating control device is allowed to rotate along with the rotatable seal and the drill pipe. a marine diverter having a marine housing having at least one diverter outlet, and a diverter seal insert, wherein the diverter seal insert comprises: an annulus or bearing assembly adaptor, said annulus or bearing assembly adaptor having an outer surface and an inner surface, said inner surface defining a passageway about a central axis, wherein the outer surface and the inner surface are radially spaced from one another and define a wall, and wherein the wall has a first end portion and a second end portion axially spaced from the first end portion, and wherein the first end portion includes a flange; an annulus or bearing assembly adaptor, said annulus or bearing assembly adaptor having an outer surface and an inner surface, said inner surface defining a passageway about a central axis, wherein the outer surface and the inner surface are radially spaced from one another and define a wall, and wherein the wall has a first end portion and a second end portion axially spaced from the first end portion, and wherein the first end portion includes a flange; an annular packer seal mounted within the marine diverter; a first rotating control device including an outer race, a rotatable inner race, and at least one rotatable seal which is attached to the inner race, which extends axially beyond the outer race and which can rotate against a drill pipe under a differential pressure; and an assembly for fastening for connecting the marine diverter to the first rotating control device, wherein said assembly for fastening is configured to maintain the first rotating control device oriented axially with the drill pipe and a riser; wherein the outer race of the first rotating control device is at least partially inserted into the longitudinal passageway, wherein the outer race comprises an enlarged diameter portion, wherein the assembly for fastening is configured to fasten the enlarged diameter portion of the outer race to the flange of the diverter seal insert of the apparatus, characterized in that the annular packer seal is configured to displace radially inward into sealing engagement with the outer race of the first rotating control device while the inner race of the first rotating control device is allowed to rotate along with the rotatable seal and the drill pipe.