A cable attachment device for sealing and retaining a communications cable entering a telecommunications closure through an opening defined in the closure, the device comprising: a housing having a passage through which the communications cable extends, the housing having a first portion and a second portion; wherein the first portion of the housing is configured to receive a protective tube of the telecommunications cable; wherein the second portion of the housing is configured to engage with the closure; a first seal configured to form a seal between the device and the closure; a second seal configured to form a seal between the interior of the device and the protective tube; a third seal configured to seal between the communications cable and the interior of the device, wherein the third seal circumscribes the communications cable; a first retaining arrangement configured to couple the device to the closure; a second retaining arrangement configured to hold the protective tube relative to the device; and a third retaining arrangement configured to fix the communications cable relative to the device; wherein the second portion comprises an inlet portion for insertion in the telecommunications closure, and the first portion comprises a locknut portion and a gasblock portion; an end of the inlet portion comprises a compressible member, and wherein the third seal is configured to be received in a bore of the compressible member; and the inside of the locknut portion is shaped such that it exerts a force on the compressible member of the inlet portion to compress the third seal when the locknut portion is coupled to the inlet portion, forming the seal between the communications cable and the interior of the device. a housing having a passage through which the communications cable extends, the housing having a first portion and a second portion; wherein the first portion of the housing is configured to receive a protective tube of the telecommunications cable; wherein the second portion of the housing is configured to engage with the closure; wherein the first portion of the housing is configured to receive a protective tube of the telecommunications cable; wherein the second portion of the housing is configured to engage with the closure; a first seal configured to form a seal between the device and the closure; a second seal configured to form a seal between the interior of the device and the protective tube; a third seal configured to seal between the communications cable and the interior of the device, wherein the third seal circumscribes the communications cable; a first retaining arrangement configured to couple the device to the closure; a second retaining arrangement configured to hold the protective tube relative to the device; and a third retaining arrangement configured to fix the communications cable relative to the device; wherein the second portion comprises an inlet portion for insertion in the telecommunications closure, and the first portion comprises a locknut portion and a gasblock portion; an end of the inlet portion comprises a compressible member, and wherein the third seal is configured to be received in a bore of the compressible member; and the inside of the locknut portion is shaped such that it exerts a force on the compressible member of the inlet portion to compress the third seal when the locknut portion is coupled to the inlet portion, forming the seal between the communications cable and the interior of the device.