Politubes designs and manufactures high-performance multilayer insulating tubes and caps, engineered for industrial applications with stringent technical requirements.

Unlike conventional insulating tubing, our solutions stand out for:

• Compact design, enabling space-optimized integration
• Extremely tight dimensional tolerances, ensuring process repeatability and long-term reliability
• Superior electrical insulation performance, even under severe operating conditions
• Use of premium-grade raw materials (Nomex™, Kapton™, Mylar™, 2MSO™, 2LSO™, Ajedium™ PEEK & PPSU, etc.), providing excellent electrical insulation, thermal conductivity control, chemical resistance, mechanical integrity, and high resistance to puncture during assembly
• Extensive customization options, tailored to specific application and design requirements
• Direct and compliant integration into the customer’s UL files

Main Applications

Politubes insulating tubes are used across a wide range of industrial sectors and electrical devices, including:

• Cable crimp insulation for conductors belonging to the same phase in electrical windings
• Slot insulation for stators with hairpin windings (EV-Tubes™)
• Cable terminations in electric motors
• Insulation of conductors and connections in automotive applications
• Protection of thermal protectors, thermistors, and temperature sensors
• Thermocouple insulation
• Insulation for compressors, PTC sensors, and hermetic pumps
• Applications in capacitors, resistors, ignition coils, and industrial sensors
• Insulation for busbars, wiring harnesses, lithium batteries, and windings
• Protection and insulation of tie rods and lead-out wires in transformers
• HVAC (Heating, Ventilation and Air Conditioning) applications, where our insulating tubes and caps ensure effective electrical insulation as well as thermal and mechanical protection. They help reduce heat losses, prevent condensation, and improve the overall energy efficiency of air conditioning and refrigeration systems.

Customer-Specific Solutions

All Politubes products are fully customizable according to application needs:

• Variable materials and wall thicknesses
• Custom colors and helical striping for immediate identification of cables and wiring bundles
• Special geometries developed from customer technical drawings

With over 50 years of experience in the electrical and electronic insulation industry, Politubes is ready to co-develop tailor-made solutions that meet your most demanding insulation requirements.