China Flexible Elastomeric Insulation Manufacturer & Manufacturers

Global leader in closed-cell NBR/PVC elastomer foaming technology. Advanced energy-saving solutions for industrial cooling, HVAC, and cryogenic application systems.

Premium Flexible Elastomeric Insulation Products

Explore our high-performance thermal and acoustic insulation range. Designed for maximum thermal efficiency and vapor condensation resistance.

China NBR PVC RUBBER FOAM INSULATION SHEET Manufacturers, Pricelist

China NBR PVC RUBBER FOAM INSULATION SHEET Manufacturers, Pricelist

High-density nitrile/PVC blended elastomeric sheets for wide-temperature application ranges.

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Wholesale Kingflex green corlor rubber foam insulation sheet roll Manufacturer, Factories

Wholesale Kingflex green corlor rubber foam insulation sheet roll Manufacturer, Factories

Ecological green formulation designed for visual identification and clean-room projects.

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China Low temperature heat insulation synthetic rubber sheet elastomeric cryogenic insulation tube sheet roll Manufacturer, Quotes

China Low temperature heat insulation synthetic rubber sheet elastomeric cryogenic insulation tube sheet roll Manufacturer, Quotes

Specifically formulated to withstand cryogenic stress and thermal shocks at ultra-low ranges.

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China Kingflex closed cell nitrile rubber foam sheet roll Manufacturers, Pricelist

China Kingflex closed cell nitrile rubber foam sheet roll Manufacturers, Pricelist

Closed-cell structure blocks moisture and air penetration, optimizing thermal performance.

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China Ultra low temperature rubber foam insulation for cryogenic System Factory, Pricelist

China Ultra low temperature rubber foam insulation for cryogenic System Factory, Pricelist

Heavy-duty elastomeric solution for LNG, liquefied industrial gas pipelines, and cryogenic storage.

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Wholesale Kingflex Thermal Insulation Tubes are closed-cell Factory, Factories

Wholesale Kingflex Thermal Insulation Tubes are closed-cell Factory, Factories

Pre-slit and seamless structural pipes for swift construction and maximum energy savings.

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Wholesale Kingflex Rubber Foam Insulation Sheet Roll Manufacturers, Quotes

Wholesale Kingflex Rubber Foam Insulation Sheet Roll Manufacturers, Quotes

High-flexibility roll stocks suitable for large diameter pipelines, ducts, and custom tanks.

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Wholesale Kingflex foam rubber pipe insulation Supplier, Factory

Wholesale Kingflex foam rubber pipe insulation Supplier, Factory

Reliable condensation control and acoustic dampening for sanitary water and cooling lines.

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1. Executive Whitepaper: The Evolution of Closed-Cell Elastomer Technology

In contemporary engineering architectures, thermal energy conservation and structural security are intensely dependent on precision insulation systems. Flexible Elastomeric Insulation (FEF), traditionally synthesized using a core Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC) blend, represents the pinnacle of moisture resistance and thermal protection. By incorporating a densely packed, micro-cellular closed matrix (exceeding 98% closed-cell structure), this material successfully impedes vapor migration and maintains highly stable thermal conductivity (λ ≤ 0.034 W/(m·K) at 0°C).

With the global transition toward smart buildings and strict eco-regulations, the insulation market is shifting from open-cell alternatives like fiberglass and mineral wool toward high-density elastomeric materials. Kingflex Insulation Co., Ltd., backed by over 40 years of manufacturing lineage, drives this shift through advanced gas-injection continuous extrusion technology. Our materials prevent the catastrophic phenomenon of Corrosion Under Insulation (CUI) and eliminate standard condensation risks, securing structural durability across building lifecycles.

600K+ m³
Annual Production Capacity
98% +
Closed Cell Ratio
40+ Yrs
Industrial Experience
66+
Exporting Countries

2. China Factory Supply Chain Synergy & Global Procurement Optimization

Operating out of Dacheng, China—historically celebrated as the global capital of energy-efficient green building materials—Kingflex utilizes local resource clustering. The integration of high-grade raw monomer sourcing, centralized additive chemical supplies, and high-capacity processing infrastructure gives us a highly cost-efficient production flow.

Unlike fragmented manufacturing setups, Kingflex operates five large-scale fully automated continuous assembly lines. This level of automation keeps output consistent, reduces thermal fluctuation within foam batches, and achieves unmatched delivery lead times for global engineering clients. By placing raw material synthesis and shipping logistics under unified operational control, we shield our clients from localized cost volatility and supply-chain interruptions.

Kingflex Head Office and Manufacturing Center
Modern Head Office & Plant
Kingflex Industrial Production Floor
Continuous Foaming Plant
Kingflex Technical and Operations Team
Professional Engineering Team

3. Localized Compliance, Environmental Safety & Fire Protection Standards

When deploying insulation globally, compliance with localized building codes is critical. Kingflex flexible elastomeric materials are engineered to satisfy stringent worldwide regulatory frameworks. Our products undergo rigorous batch testing to verify they comply with European and North American fire safety, ecological protection, and toxicity standards:

  • BS 476 Part 6 & 7: Achieved Class 0 and Class 1 ratings for fire propagation and surface flame spread, limiting smoke generation in structural fire emergencies.
  • UL 94 Flammability Standard: Rated V-0, confirming self-extinguishing properties without producing hazardous flaming droplets.
  • REACH & RoHS Directives: Fully certified free from toxic polybrominated diphenyl ethers (PBDEs), heavy metals, and ozone-depleting chlorofluorocarbons (CFCs).
  • ASTM C534: Standard specification compliant for preformed flexible elastomeric cellular thermal insulation in sheet and tubular forms.
BS 476 Class 0 Certified
UL94 Flame Retardant
REACH & RoHS Compliant
ISO 9001/14001 Registered
FM Approval/ISO Certificate
CE & FM Audits
Compliance Certification
Fire Safety Reports
Traceability Documents
Material Traceability
ASTM Standard Testing
ASTM Verification

Industrial Product Specifications

Technical parameters of Kingflex standard sheet rolls and pre-formed tubes. Optimized for commercial HVAC, cryogenic installations, and industrial pipe insulation.

Material Matrix: NBR/PVC blend with fine closed micro-cells.

Thickness Range: 6mm to 50mm customizable parameters.

Bulk Density: 40 - 55 kg/m³ for high mechanical resistance.

Working Limits: -40℃ up to +105℃ surface temperatures.

Core Advantages:

  • Uniform micro-foaming prevents local thermal bridging.
  • ≥98% closed-cell ratio keeps thermal conductivity stable long-term.
  • ≥80% compression recovery factor resists structural compression.
  • Inherent flame-retardants immediately self-extinguish when fire source is removed.
Insulation Thickness Standard Width Roll Length Option Water Vapor Resistance (μ)
6mm / 9mm / 13mm 1.0m / 1.2m / 1.5m 10m - 30m ≥ 10,000
19mm / 25mm / 32mm 1.0m / 1.2m / 1.5m 8m - 15m ≥ 10,000
40mm / 50mm 1.0m / 1.2m 4m - 8m ≥ 10,000
Black Sheet Insulation Roll Rollout
Flexible Elastomeric Insulation Sheet application
Kingflex insulation processing and packaging
Finished insulation rolls stored in warehouses

Form Factor: Hollow cylindrical pre-molded sleeves.

Wall Thickness: 9mm to 40mm options.

Internal Diameter (ID): 6mm to 114mm compatible with global pipe standards.

Service Temperature: -40℃ to +105℃.

Key Performance Benefits:

  • Excellent flexibility makes fitting around elbows and tees fast and clean.
  • Precision extrusion coating creates a smooth skin that prevents surface tearing.
  • Low heat conductivity stops heat gain/loss in building HVAC systems.
  • High moisture resistance prevents water buildup and freezing on chilled lines.
Black Pipe Insulation Sleeves close up
Fitted elastomeric tube insulation on copper pipes
Warehouse inventory of Kingflex tubes
Kingflex pipe packaging ready for export shipping

4. Cryogenic System Design: Overcoming Extreme Thermal Gradients

In industrial processes, especially those involving liquefied natural gas (LNG), liquid nitrogen, and ethylene systems, insulation systems must handle extreme cold (from -100°C down to -200°C). Normal cellular insulation can become brittle at these temperatures, leading to cracking from thermal contraction.

Kingflex Elastomeric Cryogenic Insulation Series uses a specialized synthetic elastomer formulation with a low glass transition temperature ($T_g$). This molecular structure maintains elastic properties even under severe cooling cycles. By installing a multi-layer composite configuration, our cryogenic systems create an active barrier against heat transfer. This layout protects pipelines from freezing, control boil-off gas (BOG) rates, and prevents structural failure of critical steel lines.

R&D Testing Phase 1
Density Analysis
R&D Testing Phase 2
Flame Chamber Verification
R&D Testing Phase 3
Thermal Conductivity Test

5. Localized Application Scenarios & Project Integration

Different projects and industries require tailored insulation properties. Kingflex elastomeric insulation materials are optimized for key global applications:

  • Centralized HVAC Systems: Preventing surface condensation and reducing energy loss in high-airflow metal ductwork and cooling pipes.
  • Industrial Petrochemical Facilities: Shielding process steam pipelines from harsh outdoor weather, preventing thermal loss, and controlling corrosion under insulation (CUI).
  • Acoustic Isolation: Damping structural vibrations and reducing airborne sound in commercial mechanical rooms and industrial HVAC plenums.
  • Civil Construction: Clean, dust-free thermal insulation systems for hospitals, high-tech data centers, commercial shopping malls, and residential high-rises.
HVAC installation site
HVAC Duct Insulation
Industrial piping project
Process Pipe Cladding
Commercial HVAC duct insulation
Acoustic Lining
Cleanroom plumbing lines
Cleanroom Piping
Refrigeration piping insulation
Chilled Water Piping
Cold storage pipeline insulation
Cryogenic Pipe Insulation
Acoustic insulation board application
Air Handling Units
District cooling pipeline insulation
District Heating Network
Marine engine room insulation
Marine Cold Lines
Data center liquid cooling system
Data Center Cooling
Pharmaceutical pure water pipe insulation
Pharmaceutical Lines
Solar heating pipeline insulation
Solar Hydronic Systems

6. Direct Communication & Quality Approvals

Maintaining transparent communication and solid quality control is essential for global sourcing. Below are screenshots of direct customer communication and product audits showing the field-proven quality of Kingflex insulation orders.

Customer chat validation 1
Customer chat validation 2
Production order tracking
Quality verification logs
Customer feedback logs

Kingflex Secondary Range & Specialized Solutions

Direct production catalogs containing specialized elastomeric compositions, corrosion-resistant tube lines, and high-temperature mineral bases.

Rubber elastomeric foam insulation tube

Rubber elastomeric foam insulation tube

Industrial-grade pre-molded tube for fast manual slippage or seamless installation.

Corrosion Resistant Rubber Foam Insulation Tube

Corrosion Resistant Rubber Foam Insulation Tube

Added anti-oxidant layer shields internal copper/steel pipes from corrosion.

Elastic Rubber Foam Insulation Pipe

Elastic Rubber Foam Insulation Pipe

Highly elastic NBR structure enables installation around complex pipe systems.

Black Rubber Foam Insulation Pipe

Black Rubber Foam Insulation Pipe

Standard closed-cell black pipe insulation designed for building HVAC projects.

Foam Rubber Foam Insulation Tube

Foam Rubber Foam Insulation Tube

Soft-profile insulation sleeves optimized for plumbing and cold water systems.

HVAC Rubber Foam Insulation Tube

HVAC Rubber Foam Insulation Tube

Specially verified for thermal management in commercial air conditioning lines.

Elastomeric rubber foam insulation system for u...

Elastomeric rubber foam insulation system for u...

Heavy-duty composite insulation systems for specialized industrial plants.

Kingflex flexible insulation material for cryog...

Kingflex flexible insulation material for cryog...

Low-temp resistant insulation rolls designed for sub-zero liquefied lines.

Cryogenic rubber foam for low temperature and h...

Cryogenic rubber foam for low temperature and h...

Dual-purpose sheets providing heat insulation and acoustic soundproofing.

Elastomeric cryogenic insulation for low temper...

Elastomeric cryogenic insulation for low temper...

Premium multi-layer synthetic configurations certified for liquefied natural gas plants.

Rock Wool Insulation Boad

Rock Wool Insulation Boad

Inorganic fiber mineral board for high-temperature applications.

rock wool thermal insulation blanket

rock wool thermal insulation blanket

Flexible mineral wool wrap designed for high-temperature furnace and boiler insulation.

7. Advanced Extrusion Lines & Global Shipping Packaging

Kingflex maintains deep quality control from the initial compound mixing to shipping placement. Our automatic formulation systems precisely feed rubber raw polymers, vulcanizers, and blowing agents into long continuous extrusion machines. Below is a tour of our plant, demonstrating our continuous output capacity and structured warehousing systems.

Extrusion lines
Continuous Extrusion Line
Packaging floor
Quality Control Station

Every single batch undergoes testing for density, closed-cell ratio, and dimensional stability. Our logistics team prepares each cargo container using protective moisture-proof films, ensuring products arrive in perfect condition at job sites worldwide.

Frequently Asked Questions (FAQ)

Technical answers to common engineering, procurement, and installation questions about flexible elastomeric insulation systems.

Q1: What is elastomeric rubber foam insulation used for?
It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation. Thanks to its closed-cell structure and high vapor diffusion resistance, it is especially effective at preventing condensation on chilled water lines and cooling systems.
Q2: Is Kingflex rubber foam insulation fire resistant?
Yes, our rubber foam insulation products are flame retardant. They meet global building safety standards, including BS 476 (Class 0 and Class 1) and UL94 (V-0 rating), ensuring they self-extinguish and produce minimal smoke in a fire.
Q3: What is the difference between rubber foam and rock wool insulation?
Rubber foam is flexible, closed-cell, and highly moisture-resistant, making it ideal for HVAC, cooling systems, and condensation control. Rock wool is inorganic, highly fireproof, and resists extreme heat, making it suitable for high-temperature industrial pipelines and fire wall applications.
Q4: Do you provide customized insulation products?
Yes, we provide full OEM and ODM services. We customize dimensions, thicknesses (from 6mm to 50mm), densities, colors, and adhesive backings to meet specific project guidelines.
Q5: What certifications do your products have?
Our products are certified to BS 476, CE, REACH, RoHS, UL94, and ASTM standards. This ensures they meet fire safety, environmental protection, and quality compliance requirements for global export markets.
Q6: Does Kingflex products have traceability?
Yes. Every production run has a unique batch code. We trace raw materials, production line conditions, operator logs, and QC testing records to maintain consistent quality across all shipments.
Q7: What thickness of Rubber foam insulation sheet roll can you produce?
We produce standard thicknesses from 6mm to 50mm. Specialized configurations can be laminated or co-extruded to meet custom design requirements.
Q8: What is the service life of rubber plastic pipe and board?
Under typical operating conditions and with proper installation, Kingflex insulation has a service life of 10 to 15 years. Using protective outer jackets for outdoor applications can further extend the system's lifespan.

Explore More Solutions

Premium specialized insulation lines including acoustic boards, thick sheet rolls, and cryogenic setups.

Wholesale Elastomeric cryogenic insulation for low temperature application Suppliers, Factories

Wholesale Elastomeric cryogenic insulation for low temperature application Suppliers, Factories

Specialized multi-layer insulation systems designed for low-temperature industrial lines.

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Wholesale 40mm thickness rubber foam insulation sheet Manufacturer, Suppliers

Wholesale 40mm thickness rubber foam insulation sheet Manufacturer, Suppliers

Thick-cut sheets provide high thermal resistance without needing double layering.

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China Kingflex closed cell flexible rubber foam pipe insulation Factory, Factories

China Kingflex closed cell flexible rubber foam pipe insulation Factory, Factories

Extruded piping insulation sleeves with high flex properties for commercial hot/cold water plumbing.

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Wholesale Cryogenic Rubber Foam Insulation For the ULT Systems Supplier, Factories

Wholesale Cryogenic Rubber Foam Insulation For the ULT Systems Supplier, Factories

Proven protection for ultra-low temperature (ULT) pharmaceutical and laboratory freezers.

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China Flexible Ultra Low Temperature Insulation Series Manufacturers, Supplier

China Flexible Ultra Low Temperature Insulation Series Manufacturers, Supplier

Engineered insulation line for industrial gas storage and low-temperature process lines.

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China Rock Wool Insulation Boad Manufacturers, Suppliers

China Rock Wool Insulation Boad Manufacturers, Suppliers

Inorganic stone wool panels designed for high fire ratings and structural partition safety.

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Wholesale Flexible Cryogenic Insulation For Ultra Low Temperature System Factory, Quotes

Wholesale Flexible Cryogenic Insulation For Ultra Low Temperature System Factory, Quotes

Resists micro-cracking and controls boil-off gas in LNG shipping systems.

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