This product is not currently available. For more information, including distributor inventory, please contact us.


Our Raychem MWTM Medium-Wall Heat Shrink Tubings are compliant to RoHS and REACH regulations and approved for offshore applications.

Our Raychem MWTM Medium-Wall Heat Shrink Tubing combines the electrical and physical properties of cable over sheath and core insulation of low voltage cables with ruggedness and easy installation. This is widely used to insulate, protect and seal low voltage power cable joints and terminations, as well as many further applications in cable accessories and electrical connections. The Medium-Wall Heat Shrink Tubing is made of our Raychem heat shrink polymer that is halogen-free and stabilized against UV irradiation. During heating the medium-wall tubing shrinks to the original smaller diameter, fitting tightly over a wide range of cable sizes and cable accessories. At the same time, the tubing’s inner sealant wall gives a reliable moisture seal over even the most irregular shapes. The Medium-Wall Heat Shrink Tubing is available with a hot-melt sealant, both uncoated or coated. This tubing is field-proven to have long-term reliability in harsh climatic conditions and in polluted environments, and has an unlimited shelf-life when stored under normal conditions.

grey bar

Key Features

  • High electrical characteristics and mechanical strength for low voltage applications  
  • Medium-wall, cross-linked polyolefin. UV stabilized against irradiation and weathering
  • Halogen and silicon-free material content, noncorrosive, non-toxic, free of lead and aluminium
  • Available inline coated with hot melt adhesive or uncoated
  • Color black, 3:1 shrink ratio
  • Unlimited shelf-life
grey bar
grey bar
  1. Heat Shrink Technology for Energy Applications (English)

Discover the different steps to properly install our Raychem heat shrink sleeves and tubing.

grey bar


Frequently Asked Questions

Question: For which application can TE’s Raychem MWTM Medium-Wall Heat Shrink Tubing be used?

Answer: Our Raychem Medium-Wall Heat Shrink Tubing is a general-purpose heat shrink tube that is normally used as core protection in low voltage termination kits. It is compliant with RoHS and REACH regulations. It is approved for offshore applications. RUS accepted as jacket restoration of JCN cable. Uncoated MWTM tubing (-U or -A/U) is or cable rejacketing only.


Question: With what type of cable can I use the Medium-Wall Heat Shrink Tubing?       
Our Medium-Wall Heat Shrink Tubing can be used with low, medium, and high voltage electrical joints and splices and terminations of a wide range of cable size diameter, thanks to a high shrink ratio.


Question: What is the Medium-Wall Heat Shrink Tubing made of?         

Answer: This Medium-Wall Heat Shrink Tubing is made of our Raychem heat shrink material. It is a specially-formulated medium-wall, cross-linked polyolefin that shrinks to its original smaller extruded diameter when the heat is applied.

The heat shrink material is comprised of polymeric materials exposed to a high-energy electron beam that causes permanent cross-linking, or intermolecular joining, of adjacent molecules. Due to cross-linking, the heat shrink material loses its melting properties allowing it to be heated to temperatures beyond the crystalline melting point without melting. Above this temperature, heat shrink can be expanded and formed in shapes that will remain in position while the temperature decreases below the crystalline melting point again.

When properly installed, TE’s Raychem heat-shrinkable tubes are long-lasting products that will help you improve your grid connectivity and reliability for decades.


Question: Is TE's Raychem Medium-Wall Heat Shrink Tubing part of the installation training schedule from TE?

Answer: Yes, our Raychem Medium-Wall Heat Shrink Tubing is part of our training program. Learn more on


Please review product documents or contact us for the latest agency approval information.  

Product Type Features

  • Material System  Crosslinked Polyolefin

  • Power Cable Tube & Accessory Technology  Heat Shrink

  • Power Cable Tube & Accessory Product Type  Heat Shrink Tubing

  • Adhesive Coating  No, Yes

  • Power Cable Tube & Accessory Shrink Ratio  > 2.5:1, > 3:1

  • Wall Style (Excluding Adhesive)  Single

  • Component Design  Heat Shrink

  • Coating Style  Inline

Body Features

  • Flexibility  Semi-Rigid

  • Color  Black


  • Application Diameter (Max) (mm) 9, 14.5, 22.5, 31.5, 45, 57, 68, 77, 86, 104, 126, 144, 162, 220, 255

  • Application Diameter (Max) (in) .354, .57, .885, 1.24, 1.771, 2.244, 2.677, 3.031, 3.385, 4.094, 4.96, 5.669, 6.377, 8.661, 10.039

  • Application Diameter (Min) (mm) 3.5, 5.5, 9, 13, 18, 21, 24, 28, 32, 37, 46, 55, 66, 88, 149

  • Application Diameter (Min) (in) .137, .216, .354, .511, .708, .826, .944, 1.102, 1.259, 1.456, 1.811, 2.165, 2.598, 3.464, 5.866

  • Power Cable Tube & Accessory Expanded Inside Diameter (Min) (mm) 10, 16, 25, 35, 50, 63, 75, 85, 95, 115, 140, 160, 180, 245, 285

  • Power Cable Tube & Accessory Recovered Inside Diameter (Max) (mm) 3, 5, 8, 12, 16, 19, 22, 25, 29, 34, 42, 50, 60, 80, 135

  • Power Cable Tube & Accessory Cut Length (mm) 50, 60, 70, 75, 80, 100, 125, 130, 150, 200, 225, 230, 250, 300, 350, 400, 425, 450, 500, 525, 550, 600, 650, 700, 750, 800, 850, 900, 1000, 1200, 1300, 1400, 1500

  • Recovered Wall Thickness (Max) (mm) 1, 1.4, 2, 2.4, 2.7, 2.8, 3.1, 3.2

  • Wall Thickness  Medium

Usage Conditions

  • Power Cable Tube & Accessory Flammability  Non-Flame-Retardant

  • Environmental Resistance  Moisture, Weathering, Rain, Salt Water, Contaminated Water …, Transformer Oil & Hydrocarbons

  • Chemical Resistance  Transformer Oil & Hydrocarbons (Both, Depending on Type, Conditions & Exposure Time), Yes


  • UV-Stabilized  Yes

  • Mechanical Resistance  Against Mechanical Impact or Damage, High Elongation

  • Low Smoke Emission  Yes

  • Non-Toxic & Non-Corrosive Emission  Yes

  • Marine-Offshore-Shipbuilding Certified  Yes

  • Thermal Resistance  Applicable for Low Temperatures, Applicable for Low Temperatures, Applicable for High Temperatures, Flame-Retardant

  • Emission Free  No

  • Free of Lead, Cadmium, Heavy Metals  Yes

Industry Standards

  • Standards  IEC 60684-3-214, IEC 60684-3-246, IEC 60684-3-247, HD631.2

  • UL Rating  No

  • CSA Certified  No

Product Availability

  • Power Cable Tube & Accessory Product Availability  AMERICAS, ANZPAC, ASIA, China, EMEA, Worldwide

Packaging Features

  • Spool Length (m) 10, 15, 150, 200, 25, 30, 300, 350, 40, 400, 50, 60, 70

  • Spool Length (ft) 100, 75


  • Product Use  Insulate, protect & seal power cable joints, LV cable repair, MV cable jacket repair, MV splice rejacketing, Elbow sealing sleeve

  • Other Colors Available  No

Reference Number

  • TE Internal Number CAT-MWTM

Related Materials

Datasheets & Catalog Pages

Terms and Conditions

Please carefully read the disclaimer before using any of this data. Your use of this data constitutes your acceptance of the terms and conditions set forth below. If you do not agree to those terms and conditions, please click on the I Disagree link.

This information has been provided to your free of charge for your use but remains the sole property of TE Connectivity Corporation (''TE'') or SnapEDA,  Inc. or Ultra Librarian/EMA Design Automation, Inc. (collectively, "Company"). While Company has used reasonable efforts to ensure its accuracy, Company does not guarantee that it is error-free, not makes any other representation, warranty, or guarantee that the information is completely accurate or up-to-date. In many cases, the CAD data has been simplified to remove proprietary detail while maintaining critical interface geometric detail for use by customers. Company expressly disclaims all implied warranties regarding this information, including but not limited to any implied warranties or merchantability or fitness for a particular purpose.