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Advanced Electrical Insulation & Protection Solutions

Shanghai Lontom Electric Material Co., Ltd. – Trusted manufacturer of heat shrink tubing, expandable sleeving, insulation tapes, and specialty materials for automotive, industrial, energy, and railway applications since 2010.

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15+

Years Experience

100+

Products

Global

Reach

UL Rated

Certified

About Lontom Electric

Founded in 2010, Shanghai Lontom Electric Material Co., Ltd. is a leading manufacturer and supplier of high-performance electrical insulation and cable protection materials. We specialize in heat shrink tubing, expandable PET sleeving, fiberglass insulation, high-temperature tapes, and specialty products for demanding industrial environments.

Our mission is to deliver excellent quality, competitive pricing, and professional service to meet the evolving needs of our global customers in the automotive, energy, industrial, and transportation sectors.

  • 100% Quality Inspection
  • ISO & UL Compliant Materials
  • Custom Solutions Available
  • Fast Global Shipping
Lontom Factory and Products

Our Product Range

High-quality, reliable insulation and protection solutions engineered for performance and durability in extreme conditions.

Heat Shrink Tubing

Heat Shrink Tubing

Flexible polyolefin tubing with 2:1 or 3:1 shrink ratios. Flame retardant, abrasion resistant, and ideal for wire splicing, insulation, and strain relief.

  • • 2:1 & 3:1 Shrink Ratio
  • • UL Recognized
  • • Temp Range: -55°C to 135°C
  • • Available in 10+ Colors
Expandable PET Sleeving

Expandable PET Sleeving

Braided polyester sleeving that expands to fit over connectors and irregular shapes. Provides excellent abrasion resistance and EMI protection.

  • • Expandable Design
  • • High Flex Life
  • • UV & Chemical Resistant
  • • 2mm to 50mm Diameter
Electrical Insulation Tape

Electrical Insulation Tape

High dielectric strength vinyl and rubber tapes for insulating splices, joints, and terminations. Self-amalgamating options available.

  • • 600V to 15kV Rating
  • • Moisture Resistant
  • • Cold Weather Flexible
  • • Meets UL 510 Standards
Fiberglass Sleeving

Fiberglass Sleeving

High-temperature braided fiberglass tubing for extreme environments. Used in motors, transformers, and industrial heating systems.

  • • Up to 550°C Resistance
  • • Non-Flammable
  • • Chemical & Oil Resistant
  • • Silicone or Viton Coated
High-Temp Insulation

High-Temp Insulation

PTFE, PFA, and FEP sleeving for aerospace, semiconductor, and chemical processing applications requiring extreme thermal stability.

  • • -200°C to +260°C Range
  • • Ultra-Pure Materials
  • • Low Outgassing
  • • FDA Compliant Options
Dual Wall Adhesive Tubing

Dual Wall Adhesive Tubing

Heat shrink tubing with inner adhesive lining for waterproof, airtight seals. Ideal for outdoor and marine environments.

  • • Moisture & Corrosion Proof
  • • 3:1 Shrink Ratio
  • • Strong Bond Strength
  • • Meets MIL-DTL-23053
Hook & Loop Sleeving

Hook & Loop Sleeving

Releasable cable management sleeve with Velcro closure. Easy to install and modify, perfect for serviceable harnesses.

  • • Reusable Design
  • • Flame Retardant
  • • Wide Size Range
  • • Custom Lengths
Custom Insulation Solutions

Custom Solutions

We offer OEM/ODM services including custom colors, printing, packaging, and material formulations to meet your exact specifications.

  • • Private Labeling
  • • Custom Printing
  • • Prototype Development
  • • Volume Discounts
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Industry Applications

Our materials are trusted in critical applications across multiple high-reliability sectors.

Automotive

Wiring harness bushings, engine sensors, fuel and brake line protection, ECU insulation, and EV battery pack management.

Industrial & Energy

Electric motors, generators, wind turbines, solar inverters, home appliances, and industrial control systems with UL-rated materials.

Railway

High-temperature resistance, fire protection, and mechanical protection for signaling, traction, and onboard systems.

Quality Assurance

Lontom is committed to excellence through strict quality control and international certifications. Our products meet or exceed industry standards for safety, performance, and reliability.

  • ISO 9001 Certified
  • UL Recognized Materials
  • RoHS & REACH Compliant
  • CE Marked
Certificate 1 Certificate 2
Lontom Certifications

Frequently Asked Questions

What is the difference between 2:1 and 3:1 heat shrink tubing?

2:1 tubing shrinks to half its original diameter, while 3:1 shrinks to one-third. 3:1 is better for irregular shapes or when a tighter seal is needed.

Can I get custom colors or printing?

Yes, we offer custom color matching and printing services for volume orders. Contact us with your specifications.

Are your materials RoHS compliant?

Yes, all Lontom products are RoHS and REACH compliant, ensuring environmental and safety standards are met.

What is the lead time for orders?

Standard products ship within 3-7 business days. Custom orders may take 10-15 days depending on complexity.

Get in Touch

For product inquiries, technical support, or custom solutions, contact our team today.

+86-13818052015
+86-21-63147475
ellenjie@lontom-elec.com
ellenjie@lontomtech.com
Room 516 of Building A, No.1500 of Longwu Road, Shanghai 200231, China
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