The RNF-100-3-X-SP with Heat Shrink Tubing and Sleeves is a series of electronic parts manufactured by TE Connectivity. This particular model is designed to offer maximum insulation, strain relief, abrasion protection, chemical and solvent resistance, as well as improved wire handling characteristics. It is ideal for a variety of applications such as automotive, aerospace, military, consumer, and industrial applications. The heat shrinkable sleeving comes with a 3:1 shrink ratio and a continuous operating temperature range of -55C to 133C. It also boasts high flame retardant rating and is UL Approved and CSA Certified. The tubing can be used for environmental sealing of electrical connection systems, bundling of cables, and providing electrical insulation for wires and cables.