Heating causes the tubing to contract to between half and one sixth of its original diameter, depending on the material used, providing a snug fit over irregularly shaped joints. If overheated, heat-shrink tubing can melt, scorch or catch fire like any other plastic. Uncontrolled heat can cause uneven shrinkage, physical damage and insulation failure, and these methods are not recommended by heatshrink suppliers. Convenient but less consistent methods for shrinking the tube include a soldering iron held close to but not touching the tube, or the heat from a lighter. The tubing is then shrunk to wrap tightly around the joint by heating in an oven or with a hot air gun or other source of hot gas flow. If the fit is tight, silicone lubricant can be applied without compromising the heat-shrink material. The unshrunk tubing is fitted on the wire before making the connection, then slid down to cover the joint after it is made. Heat-shrink tubing is rated by its expansion ratio, a comparison of the differences in expansion and recovery rate. From near microscopically-thin-wall tubing to rigid, heavy-wall tubing, each type has precise design and chemical additives that make it suitable for meeting any of a wide variety of environmental demands. Heat-shrink tubing is manufactured in a multitude of varieties and chemical makeups with the exact composition of each type being dependent on the intended application. Heat-shrink tubing is ordinarily made of polyolefin, which shrinks radially (but not longitudinally) when heated, to between one-half and one-sixth of its diameter. It can also be used to repair the insulation on wires or to bundle them together, to protect wires or small parts from minor abrasion, and to create cable entry seals, offering environmental sealing protection. Heat-shrink tubing (or, commonly, heat shrink or heatshrink) is a shrinkable plastic tube used to insulate wires, providing abrasion resistance and environmental protection for stranded and solid wire conductors, connections, joints and terminals in electrical work. With the Battery Cable Extender in place, it's a snap for boaters to access a convenient location for wiring-in accessories and lights and it prevents unwanted splicing with factory rigging.Animation of heat-shrink tubing, before and after shrinking The case then latches and unlatches for reuse and continued protection with water sealant or grease. Additionally, each Battery Cable Extender uses stainless steel hardware with a 5/16-18 stud and a case to protect the in-line connection. Each HYDRA® Battery Cable Extender includes both positive and negative terminals that can accommodate up to 2-gauge wire connecting back to the posts on the battery terminal. And it can even save you trouble if you rig on-board battery chargers. Battery cable splice kit full#Along with the full line of HYDRA® battery accessories, the HYDRA® Battery Cable Extender Kit empowers boaters to go beyond the two posts on a battery so they can easily and efficiently manage their battery connections where it's more convenient. The days of struggling with marine battery connections are OVER.
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