Great quality Poly-olefin HeatShrink Tube Polyolefin HeatShrink Tube. Heat Shrink sleeve Polyolefin are excellent for insulation. Perfect for electrical, electronic, automotive, hobby, electrical insulation, wire bundling, color coding, mechanical protection, wire/cable joints and repairs . Good electrical, mechanical and chemical performance. Suitable for Hobbyists and Model Makers, Electrical, Electronic, Automotive and General Purpose uses. Specification: 1. Diameter: 25mm, Length-1 meters 3. Color: -Black 3. Material: - Polyolefin 4. Shrinkage Ratio: 2:1 (will shrink to 1/2 its supplied diameter) 5. Minimum Shrinkage Temp: +70 Degree C 6. Full Shrinkage Temp: +110 deg C 7. Maximum Operating Temperature: -55 deg C to +125 deg C 8. Tensile strength: 10.4 Mpa 9. Dielectric strength: 20 kv/mm How to use a Heat Shrink Tube 1. Take a Heat Shrink Tube with diameter slightly larger than Cut it according to the required length. 2. Use a heat source to heat up the tube for 10-20 seconds. 3. You will notice the Heat Shrink tube shrinking down and upon completion it will hold the wire firmly. In market, 2 types of Heat Shrink Tubes available. Polyolefin Heat Shrink Tube 1. Material- Polyolefin 2. Feels like rubber. 3. Does tubes don't get cracked with time 4. Works best for insulation. 5. Is being used in military, aerospace and railway industries.