An appliance for sealing elastic hoses with a sleeve, which is plastically deformable and slipped onto the hose, has two jaws which are movable towards and away from each other. One jaw has two straight bars which project towards the other jaw and extend transversely of the sleeve to make two transverse indentations in the sleeve and the hose when the jaws are moving towards each other. The same jaw has a cutting edge which projects towards the other jaw and is directed transversely of the sleeve, the cutting edge making a substantially transverse cutting indication in the sleeve and the hose when the jaws are moving towards each other.

A device for installing an elastic sealing ring on an electronic device includes a clamp module and a pressing module. The clamp module includes a sliding column defining two grooves, two linkage plates, and two pins secured on the bottom end of the linkage plates. The pressing module includes a bracket and a knockout plate. The linkage plates are rotatably installed on the bracket and the sliding column can slide relative to the bracket. The knockout plate can slide relative to the bracket, to install the sealing ring on an electronic device.

A device for installing an elastic sealing ring on an electronic device includes a clamp module and a pressing module. The clamp module includes a sliding column defining two grooves, two linkage plates, and two pins secured on the bottom end of the linkage plates. The pressing module includes a bracket and a knockout plate. The linkage plates are rotatably installed on the bracket and the sliding column can slide relative to the bracket. The knockout plate can slide relative to the bracket, to install the sealing ring on an electronic device.

A cavity mold-replacing structure of a parallel crimping plier is provided. The structure includes a first crimping component having a first clamping handle and a crimping portion with a crimping opening; a second clamping handle having a first pivot member and a second clamping handle; a mold-pressing component including an upper mold-pressing member and a lower mold-pressing member; wherein the upper mold-pressing member is fixed at top of the crimping opening, and the lower mold-pressing member is pivot with the other end of the first pivot member and disposed below the crimping opening; and a mold-replacing component, having a mold-replacing block movably disposed in the internal space of the crimping portion and the mold-replacing block can be moved.

A cavity mold-replacing structure of a parallel crimping plier is provided. The structure includes a first crimping component having a first clamping handle and a crimping portion with a crimping opening; a second clamping handle having a first pivot member and a second clamping handle; a mold-pressing component including an upper mold-pressing member and a lower mold-pressing member; wherein the upper mold-pressing member is fixed at top of the crimping opening, and the lower mold-pressing member is pivot with the other end of the first pivot member and disposed below the crimping opening; and a mold-replacing component, having a mold-replacing block movably disposed in the internal space of the crimping portion and the mold-replacing block can be moved.