How to DetectSilicone Heat Shrink TubingWhat are the wall thickness and inner diameter? With the known sizes of our heat shrinkable tubing, ranging from a few millimeters for small specifications to several hundred millimeters for large ones, how is the size of heat shrinkable tubing evaluated?
Silicone heat-shrinkable tubes can be categorized into various types based on material, characteristics, and application fields, such as single-wall heat-shrinkable tubes, double-wall adhesive heat-shrinkable tubes, Teflon heat-shrinkable tubes, busbar heat-shrinkable tubes, and silicone rubber heat-shrinkable tubes, among others. These tubes come in various colors and shapes, with some packaged flat and others in tube form. To standardize the industry, the inner diameter of the round heat-shrinkable tube is used as the uniform measurement standard for the specification of heat-shrinkable tubes.
How to CategorizeSilicone Heat Shrink TubingThe professional and accurate method for measuring the specifications is to use a wall thickness gauge or a projection instrument to avoid human error. Heat shrinkage itself has some elasticity, so a vernier caliper is generally used for measurement. However, it is essential to master the measurement technique during the process, as the rigor of the technique will significantly affect the test results. In the industry of heat shrinkable tube wall thickness, the average wall thickness is calculated as follows: Average Wall Thickness = (High Value + Low Point). Yongle Rubbers and PlasticsThe company has successfully passed the ISO9001 certification. Our main products include platinum silicone tubes, peristaltic pump silicone tubes, silicone food molding parts, and silicone products, as well as custom production of sealing components for plastic products. With the competitive strategy of "Better Products, Better Service, Better Image," we continuously drive transformation and management innovation, enhancing the company's overall competitiveness.
How to Measure the Inner Diameter of Heat-Shrink Tubing: The inner diameter is commonly measured using a plug gauge (or mandrel). Insert the plug gauge into the tube and visually inspect for no gaps around it; the mandrel should be easy to insert and remove from the tube. The outer diameter of the plug gauge corresponds to the inner diameter of the sleeve. The inner diameter of heat-shrink tubing is typically rounded to one decimal place (in mm) and is also used for projection equipment inspections. The empirical formula for measuring the inner diameter of larger-sized sleeves is: Inner Diameter ≈ Folded Diameter ÷ 1.57 (where the folded diameter refers to the width of the sleeve when folded).
