A fire seal, the fire seal including: a housing (12, 92) provided with lips, wherein the housing is an elongate housing in the form of a channel section and having inwardly extending lips on an open side; an elongate sealing member (16, 38, 42, 97) in the form of a channel section with an opening facing towards the housing, the elongate sealing member being slidably movable relative to the housing between an inactive position located at least to a significant extent within the housing, and an active position extending outwardly to a significant extent from the housing, wherein the elongate sealing member is provided with outwardly extending lips on either side of the opening therein, and configured for engagement with the lips of the housing to prevent the elongate sealing member from fully coming out of the housing, wherein the channel section of the elongate sealing member is narrower than the channel section of the elongate housing; a resilient member in the form of at least one compression spring, that is provided within the housing and which is engaged against a closed end of the elongate sealing member, to urge the elongate sealing member away from the housing, whereby a gap adjacent to the elongate housing can be closed, in that the elongate sealing member is urged to the active position by means of the resilient member; and a fusible restraint (22, 30, 32, 34, 36) that retains the elongate sealing member in the inactive position, the fusible restraint being configured to fail at a required raised temperature such that the elongate sealing member will automatically move to the active position, for instance in the event of a fire, said fusible restraint being a fusible link (22, 30, 32, 34, 36) extending between the housing and elongate sealing member when in the inactive position; characterized in that the fusible link (22, 30, 32, 34, 36) is configured to break at a required raised temperature of 120°C to 160°C, wherein the fusible link (22, 30, 32, 34, 36) is positioned on the outside of the device when in the inactive position and the active position. a housing (12, 92) provided with lips, wherein the housing is an elongate housing in the form of a channel section and having inwardly extending lips on an open side; an elongate sealing member (16, 38, 42, 97) in the form of a channel section with an opening facing towards the housing, the elongate sealing member being slidably movable relative to the housing between an inactive position located at least to a significant extent within the housing, and an active position extending outwardly to a significant extent from the housing, wherein the elongate sealing member is provided with outwardly extending lips on either side of the opening therein, and configured for engagement with the lips of the housing to prevent the elongate sealing member from fully coming out of the housing, wherein the channel section of the elongate sealing member is narrower than the channel section of the elongate housing; a resilient member in the form of at least one compression spring, that is provided within the housing and which is engaged against a closed end of the elongate sealing member, to urge the elongate sealing member away from the housing, whereby a gap adjacent to the elongate housing can be closed, in that the elongate sealing member is urged to the active position by means of the resilient member; and a fusible restraint (22, 30, 32, 34, 36) that retains the elongate sealing member in the inactive position, the fusible restraint being configured to fail at a required raised temperature such that the elongate sealing member will automatically move to the active position, for instance in the event of a fire, said fusible restraint being a fusible link (22, 30, 32, 34, 36) extending between the housing and elongate sealing member when in the inactive position; characterized in that the fusible link (22, 30, 32, 34, 36) is configured to break at a required raised temperature of 120°C to 160°C, wherein the fusible link (22, 30, 32, 34, 36) is positioned on the outside of the device when in the inactive position and the active position.