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Insulating sleeving: protection for your harnesses and components

What is an insulating jacket?

A insulating sheath is a flexible or semi-rigid tube designed for electrical, thermal and mechanical protection cables, conductors, harnesses or electronic components. 
It plays an essential role in the prevention of short circuitsthe securing electrical installations and the extending the life of equipment. 

Insulating ducts are manufactured from technical materials such as PVC, silicone, fibreglass, polyolefin, PTFE or polyimideand can be used in harsh industrial environments: extreme temperature, humidity, salt spray, chemicals, vibrations... 

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Tenneco Gaine fyrejacket
Insulating sheath
EMI FMJ sheath

Advantages of insulating sleeving

The use of a sheath insulating material provides triple electrical, thermal and mechanical protection while improving the clarity and safety of the installations: 

  • Reinforced electrical insulation prevents current leakage and electric arcs 
  • Protection against extreme temperatures up to +260°C depending on the material 
  • Resistance to chemicals, oils, solvents, humidity and UV rays 
  • Absorption of shock, vibration and abrasion 
  • Reducing the risk of fire : self-extinguishing versions available (UL 1441, EN 45545) 
  • Compliance with international standards UL, CSA, IEC, EN, RoHS, REACH... 
  • Ease of integration flexible, lightweight, easy to cut, quick to install 
  • Aesthetics and location available in a range of colours, diameters and finishes 

The insulating sheath is a an essential passive safety feature in all industrial electrical installations. 

Electronics and electrical engineering sector 

  • Protection of soldered connections, terminals, pins and connectors 
  • Insulation on printed circuit boards or surface-mounted components 
  • Securing cabling in sensitive environments (humidity, dust, EMC) 

Aerospace, rail, defence 

  • Sheaths conforming to EN45545 (rail) or FAR 25 (aerospace) 
  • Use in on-board harnesses subject to thermal, vibratory or chemical stresses 
  • Lightweight, self-extinguishing products, low smoke emissions 

Automotive, electric vehicles, mobility 

  • Protection of motor or battery harnesses 
  • Thermal insulation against overheating and overvoltage 
  • Products with controlled fire/smoke behaviour and high mechanical strength 

Industry, automation, energy 

  • Protection of power, control, sensor or actuator cables 
  • Insulation in electrical cabinets, transformers and enclosures 
  • Sleeves resistant to oil, dust, splashes or high temperatures 

Heat-shrinkable tubing 

  • Heat-shrink for all-round protection
  • Electrical insulation + waterproofing
  • Available in polyolefin, PVDF, PTFE, with shrink ratios of 2:1, 3:1 or 4:1
  • Resistance to hydrocarbons, UV, flame 

Braided sheath (fibreglass, polyester, aramid) 

  • Excellent mechanical and thermal resistance
  • For use on motors, coils and transformers
  • Coated versions (silicone, acrylic) for extra protection
  • Highly flexible, easy to install even in constrained environments 

Silicone sheath 

  • Very good thermal resistance: -60 °C to +250 °C
  • Highly flexible, suitable for dynamic applications
  • Excellent electrical and chemical insulation
  • Suitable for medical or food applications (depending on formulation) 

Standard PVC or polyolefin sheath 

  • Cost-effective solution for low voltage
  • Common use in electrical cabinets or cable harnesses
  • Available in several colours for identification
  • Operating temperature: up to +105°C 

PTFE, polyimide, PEEK sheathing 

  • High chemical and thermal resistance up to +260°C
  • Flame resistance, self-extinguishing
  • Excellent dielectric insulation, even in thin layers
  • Critical applications: power electronics, space, high frequency 

At ADDEV Materialswe guarantee that every insulating sheath meets the requirements of your sector: 

  • Electrical standards : IEC 60684, UL 1441, EN 45545, MIL-I-3190 
  • Certified dielectric strength (up to 20 kV/mm depending on product) 
  • Compliant fire/smoke behaviour UL94, FAR 25, EN 45545 
  • RoHS and REACH compliancehalogen-free available 
  • Batch traceability, certificate of origin, TDS/FDS available 
  • Technical tests: thermal, dielectric, mechanical or chemical resistance on request 

ADDEV Materials offers you complete range of technical insulating ductswith support from start to finish: 

  • Large stock of silicone, heat-shrink, braided and PTFE tubing... 
  • Custom cuttingpre-cut to length, packaged kits 
  • Expert technical advice for selection according to voltage, standard, environment 
  • Packaging adapted to your production lines or worksites 
  • Fast delivery, technical data sheets, regulatory compliance 

 

Our objective: securing your wiring, simplify your integrationsand help you bring your facilities into compliance. 

📞 Contact our ADDEV Materials specialists to obtain a recommendation for insulating sheatha personalised quote or a sample tailored to your application. 

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Our strategic suppliers of insulating jackets

Tenneco logo
SES STERLING logo

FAQ - Insulating jacket

It is used to electrically insulate a conductor, à protect cables against mechanical or chemical damageand prevent short circuits. It is essential in all industrial installations. 

The fibreglass, silicone or PTFE sheaths are the most resistant: up to +260 °C continuous. They are recommended for motors, transformers, areas close to heat or flames. 

La sheath heat-shrinkable shrinks when heated to adapt to the shape of the cable and offer complete insulation. The braided sheath is extendable, ideal for irregular bundlesand offers a flexible mechanical protection. 

Yes. Specific versions EN 45545 (rail) or FAR 25 (aeronautics) are available, with low toxicity, low smoke and controlled fire behaviour. 

Yes. At ADDEV Materials, we offer pre-cut formats, length kits, printed or labelled sleevesfor simplified integration into production or maintenance.