How to DetectSilicone Heat-Shrink TubingWhat about the wall thickness and inner diameter? With the known sizes of our heat shrinkable sleeves, ranging from a few millimeters in small specifications to several hundred millimeters in large ones, how are the sizes of heat shrinkable sleeves judged?
Silicone heat shrinkable sleeves are categorized by material, features, and application fields into various types, including single-wall heat shrink sleeves, double-wall adhesive heat shrink sleeves, Teflon heat shrink sleeves, busbar heat shrink sleeves, and silicone rubber heat shrink sleeves, among others. These sleeves come in various colors and packaging styles, with some being flattened and others tubular. To standardize the industry, the inner diameter of the round heat shrink tube is used as the uniform measurement standard for the specification of heat shrink sleeves.
How to CategorizeSilicone Heat Shrink TubingThe professional and accurate method for specification is to use a wall thickness gauge or a projection instrument for inspection, which can prevent human errors. The heat shrink itself has some elasticity, so a vernier caliper is generally used for measurement. However, during the measurement process, it is necessary to master the measurement technique, as the rigor of the technique will significantly affect the test results. In the heat shrink tube wall thickness industry, calculate the average wall thickness: Average Wall Thickness = (High Value + Low Point). Yongle Rubber and PlasticThe company has successfully passed the ISO9001 certification. We specialize in manufacturing platinum silicone tubes, peristaltic pump silicone tubes, food molding silicone components and silicone, as well as custom production of sealing components for plastic products. With a competitive strategy centered around "better products, better services, and a better image," we continuously strive for innovation in transformation and management, enhancing our overall corporate 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 easily slide in and out of the tube. The outer diameter of the plug gauge corresponds to the inner diameter of the sleeve. The inner diameter value 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).
