Abstract: A device is provided for mounting and deploying a shrinkable clamp for hose and tubing. The device includes an annular housing in the form of a partial cylinder having a first diameter and longitudinal opening defined along its length by first and second circumferentially spaced longitudinal side edges. A first extension member projects circumferentially from the first side edge into the longitudinal opening, while a second extension member projects circumferentially from the second side edge into the longitudinal opening and is aligned adjacent to the first extension member to define therewith along with the partial cylinder a circumferential outer surface for the housing. A locking mechanism interacts with the first and second extension members for maintaining the relative positions of the first and second extension members and the size of the first diameter when the housing is subjected to a radially compressive force.