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Durkflex – Global Leader in HVAC/R Insulation & Ducting

Delivering high-performance elastomeric thermal insulation materials and integrated solutions for air conditioning, refrigeration, and industrial systems.

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About Durkflex

As one of the three core business divisions of Durkee, Durkflex is a globally recognized professional manufacturer of elastomeric thermal insulation materials in the HVAC/R industry. With two advanced manufacturing centers in China, we serve clients across continents with reliable, energy-efficient, and fire-safe insulation solutions.

Our commitment to innovation, quality control, and sustainability has positioned Durkflex as a trusted partner for commercial complexes, public infrastructure, and industrial facilities worldwide.

  • Global presence in over 60 countries
  • Two manufacturing centers in China
  • ISO-certified production processes
  • R&D-driven product development
Durkflex Manufacturing Facility

Our Products

Engineered for performance, durability, and thermal efficiency. Durkflex offers a comprehensive range of elastomeric insulation and adhesive solutions for HVAC/R systems.

Durkflex F Series

Durkflex F Series

High-performance flexible elastomeric foam insulation for HVAC and refrigeration systems. Offers excellent thermal resistance, low water vapor transmission, and superior flexibility.

  • Thickness: 6mm – 32mm
  • Temp Range: -50°C to 105°C
  • Applications: Chilled water, refrigerant pipes
Durkflex B Series

Durkflex B Series

Black-colored elastomeric insulation with enhanced UV resistance. Ideal for outdoor installations and exposed piping systems requiring long-term durability.

  • Color: Black (UV-stable)
  • Thickness: 9mm – 25mm
  • Applications: Outdoor chilled water, rooftop units

Durktape

High-adhesion aluminum foil tape designed for sealing joints and seams on insulation materials. Provides excellent moisture barrier and mechanical protection.

  • Width: 50mm, 75mm, 100mm
  • Length: 30m, 50m rolls
  • Features: Weather-resistant, anti-aging

Durkadhesive

Solvent-free contact adhesive specifically formulated for bonding elastomeric insulation to pipes, ducts, and fittings. Ensures strong, permanent adhesion.

  • Volume: 1L, 5L, 20L containers
  • Cure Time: 5–10 minutes (tack-free)
  • Compliant: Low VOC, environmentally safe
Pre-insulated Ducts

Pre-insulated Air Ducts

Factory-preinsulated air duct systems combining fabric ducting with elastomeric insulation. Reduces on-site labor and ensures uniform thermal performance.

  • Insulation Type: F/B Series integrated
  • Diameter: 200mm – 1200mm
  • Applications: Data centers, hospitals

Custom Insulation Sleeves

Tailored insulation solutions for complex piping configurations, valves, and fittings. Manufactured to exact client specifications.

  • Materials: F Series, B Series
  • Customization: Size, shape, thickness
  • Industries: Petrochemical, pharma

Cryogenic Insulation

Specialized low-temperature insulation for cryogenic applications such as LNG, liquid nitrogen, and CO₂ systems.

  • Temp Range: Down to -196°C
  • Features: Low thermal conductivity
  • Standards: ASTM C534, EN 14304

Fire-Rated Insulation

Flame-retardant elastomeric insulation meeting international fire safety standards (e.g., BS 476, UL 181).

  • Fire Class: Class 1, M1, B-s1,d0
  • Smoke Density: Low
  • Applications: High-rise buildings, subways

Integrated Solutions

From air conditioning units to industrial facilities, Durkflex delivers customized, high-efficiency insulation systems tailored to your project needs.

Water System of A/C Unit

Insulation for chilled water, hot water, and condensate drain pipes. Prevents energy loss and condensation.

Refrigerant Pipes

High-performance insulation for refrigerant lines to maintain system efficiency and prevent frosting.

Air System of A/C Unit

Integrated duct insulation solutions for air handling units and supply/return ducts.

Commercial Complex

Energy-efficient insulation for malls, offices, and hotels with high occupant comfort demands.

Public Facility

Reliable systems for hospitals, schools, airports, and government buildings requiring safety and durability.

Industry Facility

Robust insulation for factories, data centers, and manufacturing plants with demanding thermal loads.

Insulation Thickness Calculator

Advanced tool to determine optimal insulation thickness based on temperature, pipe size, and environment.

Featured Projects

Trusted by leading organizations worldwide for critical thermal management applications.

AVIC Aviation
Industry

AVIC Aviation Industry Corporation

Precision insulation for aerospace manufacturing facility in Beijing.

Shanghai GM
Industry

Shanghai GM Jinqiao Production Base

Complete HVAC insulation for automotive manufacturing plant.

China Mobile
Industry

China Mobile Data Center

Thermal management for high-density server cooling systems.

60+
Countries Served
2
Manufacturing Centers
20+
Years in Industry
500+
Major Projects

Frequently Asked Questions

What is elastomeric insulation?

Elastomeric insulation is a flexible, closed-cell foam material made from synthetic rubber. It provides excellent thermal performance, moisture resistance, and flexibility for HVAC/R applications.

Can Durkflex products be used outdoors?

Yes, the Durkflex B Series is specifically designed for outdoor use with enhanced UV resistance and weather durability.

Are Durkflex materials fire-safe?

Yes, our fire-rated insulation products meet international standards including BS 476, UL 181, and EN 13501-1 for flame spread and smoke emission.

How do I choose the right thickness?

Use our online Insulation Thickness Calculator or consult our technical team with your system parameters (temperature, pipe size, environment).

Get in Touch

Have a project or need technical support? Reach out to our global team.

Email

[email protected]

Phone

+86-27-59237477

Head Office

6 RAFFLES QUAY #14-02, 048580, Singapore

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