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　　Oil-resistant rubber heat-shrinkable tubing refers to cables or electronic components that can work in a specific oil for a long time without decomposing and softening, and can keep intact. Oil-resistant heat-shrinkable tubing has a characteristic, that is, the shrinkage temperature and continuous working temperature are relatively high. It can work for a long time without deformation at high temperatures of 150 degrees and 200 degrees, because oil has a characteristic, and the working temperature in oil is relatively high, so oil-resistant heat shrinkable tubes are also called high-temperature heat-shrinkable tubes, collectively referred to as oil-resistant rubber heat shrinkable tubes. shrink tube.　　

　　Ordinary heat shrink tubing is not oil resistant, such as PE, PVC material. The working temperature of PE heat shrinkable tube is 125 degrees, it is sensitive to temperature, and it is easy to soften at high temperature; while PE material will dissolve in chemical solvents and oil, so PE heat shrinkable tube is not oil resistant, and oil resistant heat shrinkable tube must be specially Developed for oil-resistant production, oil-resistant heat-shrinkable tubes are mainly divided into two types, which are widely used in oil-resistant areas. Oil-resistant rubber heat-shrinkable tubes are mainly divided into diesel-resistant heat-shrinkable tubes and fluororubber heat-shrinkable tubes.

　　1. Oil-resistant rubber heat-shrinkable tubing can work in diesel for a long time and protect the components in the oil from being corroded by diesel. It is generally used to protect cables and pipes of diesel vehicles, aviation fuel, and fuel tank pumps. It can work continuously at the temperature of -75℃+150℃, and has excellent high and low temperature resistance.

　　2. Oil-resistant rubber heat shrink tubing can work in most oils for a long time without being dissolved, and is resistant to chemical solvents and chemical corrosion. It is often used in commercial and military fields that require high temperature, oil, and chemical solvents to prevent wiring harnesses, pipes, or components Damaged in high temperature oil, it can work continuously at -65°C + 200°C, has excellent high and low temperature resistance, and has practical application cases in transmission oil and lubricating oil, achieving stability, no softening and no cracking, they It is an important part to protect the wire harness in the high temperature lubricating oil of new energy vehicles.

　　To sum up, PE heat shrink tubing is not oil-resistant, including double-wall heat shrink tubing and single-wall heat shrink tubing, while oil-resistant rubber heat-shrinkable tubing can work continuously in diesel oil, and fluororubber oil-resistant rubber heat-shrinkable tubing can work in most oils It is one of the most widely used heat-shrinkable tubes in oil-resistant rubber heat-shrinkable tubes so far. Therefore, it is necessary to choose oil-resistant heat-shrinkable tubes in an environment with oil, so that continuous and effective protection can be achieved.

　　As the temperature goes from low to high, the polymer material will go through the glass state-high elastic state, the performance of the glass state is close to plastic, and the performance of the high elastic state is close to rubber; during production, the heat shrinkable tube is heated to the high elastic state, and the load is applied to make it Expand, and cool quickly while maintaining the expansion, so that it enters the glassy state, and this state is fixed. Oil-resistant rubber heat-shrinkable tubing is widely used in places that require heat and oil resistance, and environments that require resistance to chemical solvents, hydraulic oil, and lubricating oil. It is suitable for insulating cable harnesses in these environments and protecting electronic and electrical equipment from damage.