A clip-on L-arm tool grips support tube lugs for simple cable joint extraction while cutting tool complexity, cost, and environmental impact.
A groove-and-cam snap-in mount lets cable glands install linearly without angular alignment while maintaining stable engagement.
A ribbed U-shaped strain relief grips the cable sheath to absorb high pull forces and protect the electrical connection inside the housing.
An elastic seal and insulating liquid block seawater at the feedthrough boundary, improving underwater housing water-tightness and corrosion resistance.
A nested sealing cylinder, sealing ends, sealant, and heat shrink tube improve deepwater cable joint waterproofing under seawater pressure.
A two-phase heat treatment restores superconductivity in damaged MgB2 wires and joints while preserving structural integrity and low resistance.