A modular lubricated bearing pack for a rotating control device, the modular lubricated bearing pack adapted for sealing bearings from wellbore fluids, in a wellbore, the modular lubricated bearing pack comprising: a bearing pack housing and a rotatable cylindrical sleeve adapted for passage of tubu ars, forming an annular assembly space therebetween; bearing elements (21a, 21b, 21c, 21d) positioned in the annular assembly space for radially and axially supporting the rotatable cylindrical sleeve within the bearing pack housing; and characterised by one or more seal assemblies, each of the one or more seal assemblies having at least one sealing element (41a, 41b, 41c), each of the at least one sealing element (41 a, 41b, 41 c) further comprising, an elastomeric body operable between a first non-activated state and a second activated state, the elastomeric body having an annular cavity, an inner sealing surface adapted to engage the rotatable cylindrical sleeve, and a radially outwardly extending flange supported in the bearing pack housing; and a loading ring, fit within the annular cavity, for urging the inner sealing surface to expand radially inwardly to engage the rotatable cylindrical sleeve for sealing thereto, wherein when the elastomeric body is in the first non-activated state, the radially outwardly extending flange has a first radial extent being less than a radial extent of a bearing assembly space; and wherein when the elastomeric body is in the second activated state, the radially outwardly extending flange is axially compressed, distending radially towards the bearing pack housing and has a second radial extent greater than the first radial extent; and an elastomeric stripper element for sealing the tubulars against the wellbore fluids from passing thereby. a bearing pack housing and a rotatable cylindrical sleeve adapted for passage of tubu ars, forming an annular assembly space therebetween; bearing elements (21a, 21b, 21c, 21d) positioned in the annular assembly space for radially and axially supporting the rotatable cylindrical sleeve within the bearing pack housing; and characterised by one or more seal assemblies, each of the one or more seal assemblies having at least one sealing element (41a, 41b, 41c), each of the at least one sealing element (41 a, 41b, 41 c) further comprising, an elastomeric body operable between a first non-activated state and a second activated state, the elastomeric body having an annular cavity, an inner sealing surface adapted to engage the rotatable cylindrical sleeve, and a radially outwardly extending flange supported in the bearing pack housing; and a loading ring, fit within the annular cavity, for urging the inner sealing surface to expand radially inwardly to engage the rotatable cylindrical sleeve for sealing thereto, wherein when the elastomeric body is in the first non-activated state, the radially outwardly extending flange has a first radial extent being less than a radial extent of a bearing assembly space; and wherein when the elastomeric body is in the second activated state, the radially outwardly extending flange is axially compressed, distending radially towards the bearing pack housing and has a second radial extent greater than the first radial extent; and an elastomeric stripper element for sealing the tubulars against the wellbore fluids from passing thereby.