A cable seal block assembly (220, 340, 600, 700) extending from a first end to a second end comprising: a first housing portion (231, 351) that extends from a first end (222, 342) to a second end (223, 343) and defines at least one axial passage extending therebetween, the first housing portion (231, 351) forming the first end of the cable seal block assembly (220, 340), the first end (222, 342) of the first housing portion (231, 351) defining a stop surface (245, 345); a second housing portion (232, 352) that defines at least one axial passage; a gasket (230, 350) disposed between the first housing portion (231, 351) and the second housing portion (232, 352), the gasket (230, 350) defining at least one axial passage that aligns with the at least one axial passage of the first housing portion (231, 351) and the at least one axial passage of the second housing portion (232, 352); and an activation assembly (233, 353) that axially compresses the gasket (230, 350) when actuated, wherein the at least one axial passage of the gasket (230, 350) defines an inner sealing surface for sealing against a cable, and wherein the gasket (230, 350) defines an opposite external sealing surface for sealing against a port of a telecommunications enclosure; characterized in that the first housing portion (23, 351) includes at least one jacket clamp (626, 720) and at least one strength rod clamp connected to the first housing portion; wherein the at least one jacket clamp (626, 720) is suitable to compress a jacket of the cable; wherein the at least one strength rod clamp is suitable to compress a strength rod of the cable; and in that the jacket clamp (626, 720) includes two members for holding a jacket portion bent back 180 degrees from the axial direction of the cable. a first housing portion (231, 351) that extends from a first end (222, 342) to a second end (223, 343) and defines at least one axial passage extending therebetween, the first housing portion (231, 351) forming the first end of the cable seal block assembly (220, 340), the first end (222, 342) of the first housing portion (231, 351) defining a stop surface (245, 345); a second housing portion (232, 352) that defines at least one axial passage; a gasket (230, 350) disposed between the first housing portion (231, 351) and the second housing portion (232, 352), the gasket (230, 350) defining at least one axial passage that aligns with the at least one axial passage of the first housing portion (231, 351) and the at least one axial passage of the second housing portion (232, 352); and an activation assembly (233, 353) that axially compresses the gasket (230, 350) when actuated, wherein the at least one axial passage of the gasket (230, 350) defines an inner sealing surface for sealing against a cable, and wherein the gasket (230, 350) defines an opposite external sealing surface for sealing against a port of a telecommunications enclosure; characterized in that the first housing portion (23, 351) includes at least one jacket clamp (626, 720) and at least one strength rod clamp connected to the first housing portion; wherein the at least one jacket clamp (626, 720) is suitable to compress a jacket of the cable; wherein the at least one strength rod clamp is suitable to compress a strength rod of the cable; and in that the jacket clamp (626, 720) includes two members for holding a jacket portion bent back 180 degrees from the axial direction of the cable.