5/16/2023 0 Comments Heat shrink tubing198 inch diameter is the recommended heat shrink tubing size for 12 gauge wire What Size Heat Shrink Tubing Do You Need? This will decrease somewhat when shrunk – normally between five and ten per cent - and this should be taken into account when selecting the length of tubing in order to ensure full coverage. This is simply the width of the tubing when laid flat A variation of this – the ‘lay flat width’ – will also sometimes need to be considered. The latter measurement will be the one displayed on the labelling. The ‘inside diameter’ (ID) of the tubing following shrinkage as well as its ‘expanded inside diameter’ (expanded ID) before shrinkage.This is normally measured in millimetres or inches As mentioned above, a 2:1 ratio indicates that the tubing will shrink to approximately half its size when heat is applied, while a 3:1 ratio means that it will shrink to one third its full size To choose the right tubing, you will need to know: Select tubing that is approximately 20-30% larger than the measurement taken in step one.Measure the widest part of the cabling or components you plan to apply the tubing to.Continue until the wrap has been tightly securedĭetermining what size heat shrink tubing you will need begins with the diameter of the materials to be covered. If you use a gun, move the heat back and forth across the tubing and avoid staying in one place to minimise the risk of burns.The latter are specialist appliances for more precise and advanced heat application This can be done with a hand held heat gun or a heat shrink oven. Cut a suitable length of tubing using standard scissors and lay or slide this over the target components.Check the recommended heating temperature for the tube to avoid uneven application or melts If the components to be covered could change size after application, ensure that the tubing has sufficient expandability by comparing its diameter when shrunk (called the ‘recovered’ diameter) with its size before shrinking (called the ‘expanded’ diameter).Remember that it will be across both its breadth and its length It should comfortably cover the wire or components before it has been shrunk into place to ensure a tight fit afterwards. Begin by choosing the right size tubing with the correct shrink ratio.It is important when using heat shrink tubing to proceed with caution and observe basic safety measures to avoid accidents or injuries. For example, tubing with a 2:1 ratio will shrink to half its size and a 3:1 ratio indicates shrinkage to one third the full size. This is usually either 2:1 or 3:1, with higher numbers indicating a greater ratio and therefore a tighter fit. Watch out for the ‘ shrink ratio’ – the relationship between the original size of the heat shrink tube and its shrunken form following application. Some also come with an adhesive liner to help the tubing stay in place once applied. Given the range of possible uses, heat shrink tubing is available in a variety of materials, sizes and colours. The name refers to the fact that the tubing is designed to shrink into place and become rigid when heat is applied, providing a durable, protective coating. They are also known as heat shrink sleeves, in particular when used with cables. Identification – the wide range of available colours allow for easy coding.Bundling multiple wires into a single unit.Reinforcement – relieving the strain applied by cables held at tension.Protection – from dust, chemicals, moisture or abrasion.Electrical insulation - for example, to repair a damaged or exposed length of wire. Heat shrink tubing is a versatile plastic layer which can be applied to cabling and components for several purposes by electricians, engineers and similar professionals, including:
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