Adhesive Lined Heat Shrink Tubing TTK(3:1)-20/6 blue 102425 KVT

• Designed for sealing, insulation, marking, and protection against corrosion of contact connections in electric power and telecommunications • Expanded shrink ratio: 3:1 • Material: polyolefin, non-flammable • Color: blue • A layer of thermoplastic adhesive is applied to the entire inner surface of the heat-shrink tubes by co-extrusion • During shrinkage, the adhesive layer melts, fills all micro-relief irregularities, and ensures complete sealing of connections • Supply form: 1 m cuts • Installation tool: high-temperature construction heat guns of the "TT" series or portable butane burners "KVT" Product description and features TTK 3:1 adhesive tubes are high-quality and popular types of heat-shrink adhesive tubes from "KVT" with a shrink ratio of 3:1 for the insulation and sealing of electrical connections. TTK tubes are made of a special composition of polyolefins with the addition of non-toxic flame retardants (except for transparent tubes), which give them pronounced non-flammability properties. A characteristic and distinguishing feature of this type of tube is a layer of thermoplastic adhesive uniformly applied to the entire inner surface of the tubes by the co-extrusion method, the presence of which ensures reliable sealing of any contact connections with a voltage of up to 1000V and provides additional mechanical strength after shrinkage. By melting and filling all micro-relief irregularities, the thermoplastic adhesive turns the cable assembly into a monolithic, airtight structure. The increased shrink ratio allows the use of TTK 3:1 heat-shrink tubes for installation on cables and twists with significant level differences or complex profiles while maintaining the flexibility and elasticity of the assembly. After melting and cooling, the adhesive composition of the TTK tubes provides excellent adhesion to almost any surfaces and materials. However, before installation, during storage and transportation, the adhesion of the silicone composite adhesive layer is minimal, which prevents the tubes from sticking together. TTK adhesive heat-shrink tubes have high resistance to ultraviolet, weather conditions, and are approved for outdoor installation, in rooms with high humidity, as well as for installation directly in soil and concrete. The recently introduced size range of non-flammable TTK (KVT) tubes in black was supplemented with tubes in red and white colors. This significantly increases their scope of application, allowing the use of different colored tubes (for example, red and black) for "phase-neutral" marking in battery chargers and other devices. TTK 3:1 (KVT) heat-shrink tubes are supplied in one-meter cuts in convenient packaging of 10 pieces and are presented in an optimal size range – from 3/1 to 50/17. The many years of application of TTK tubes in various fields of domestic industry, from electrical installation work to the use of the product in the military-industrial complex, best speaks to the quality and reliability of this development.