NBR rubber-plastic insulation material

NBR Nitrile Rubber Foam Insulation

Closed-cell foam · Class B1 flame retardancy · Low thermal conductivity · Waterproofing and shock absorption · Specialized for central air conditioning systems

Figure 1: NBR Rubber Foam Insulation Pipe Series (NBR Rubber Foam Insulation Pipes)

I. Product Overview

NBR rubber-plastic insulation material (Nitrile Butadiene Rubber Foam) is a closed-cell structural flexible insulation material manufactured primarily from nitrile rubber (NBR) and polyvinyl chloride (PVC) through processes such as mixing, extrusion, and foaming. Its internal structure consists of a large number of independent, uniformly distributed micro-bubbles; the air trapped within these bubbles prevents convection, thereby achieving an excellent thermal insulation performance.

Compared to traditional insulation materials, NBR rubber-plastic insulation material offers outstanding advantages—including a low thermal conductivity coefficient, excellent flame retardancy, water-and moisture-resistant properties, vibration and sound insulation capabilities, soft texture, and easy installation—making it the preferred choice for applications such as central air conditioning ductwork, refrigeration copper pipes, HVAC piping systems, and building insulation. It is widely used in commercial buildings, industrial facilities, cold chain logistics, automotive air conditioning systems, and other industries.

Our company's NBR rubber and plastic insulation product series have obtained the GB 8624 Class B1 flame retardancy certification, UL94 and FM certifications, as well as CE and ISO 9001 Quality Management System certifications. These products are exported to over 50 countries and regions worldwide, including Europe, the Middle East, Southeast Asia, and Africa.

II. Product Range

2.1 NBR Rubber Foam Board

Figure 2: NBR foam board roll (NBR Foam Board Roll)

The NBR rubber-plastic insulation board is a flat, flexible insulation material that can be rolled up for storage, making it ideal for large-area flat surface insulation applications such as air conditioning ducts, equipment enclosures, building walls, and roofs. It is available in a self-adhesive backing version or as a peel-and-stick sheet, increasing installation efficiency by over 50%.

Common specifications:

• Density: 40 / 45 / 50 / 55 / 60 / 65 / 70 kg/m³

• Thickness: 6 / 9 / 10 / 13 / 15 / 19 / 20 / 25 / 30 mm

• Width: 1000 mm / 1200 mm / 1500 mm (customizable)

• Length: 1000 mm / 2000 mm / Roll length: 5–30 m

• Surface treatment: smooth surface / embossed finish / self-adhesive backing / aluminum foil coating / fiberglass cloth coating

2.2 NBR Rubber Foam Insulation Pipe (NBR Rubber Foam Pipe)

Figure 3: NBR foam insulation pipe (NBR Foam Insulation Pipe)

The NBR rubber-plastic insulation pipe is a pre-formed tubular insulation material featuring a longitudinal notch design, allowing it to be directly fitted over copper or steel pipes for quick installation. It is specifically designed for central air conditioning refrigerant lines, water supply and drainage pipelines, and HVAC systems; its inner diameter range covers all specifications from 6 mm to 114 mm, accommodating various pipe diameter requirements.

Common specifications:

• Density: 40 / 45 / 50 / 55 / 60 / 65 / 70 kg/m³

• Wall thickness: 9 / 13 / 15 / 19 / 20 / 25 / 30 / 40 mm

• Inner diameter (compatible pipe diameter): 6 / 9 / 10 / 13 / 16 / 19 / 22 / 25 / 28 / 32 / 35 / 38 / 42 / 48 / 54 / 60 / 76 / 89 / 108 / 114 mm

• Length: 1.8 m / 1.83 m / 2.0 m (Standard) / Customizable

• Surface treatment: Smooth surface / Self-adhesive backing / Aluminum foil coating

2.3 Self-Adhesive NBR Foam Insulation Material

Figure 4: Self-adhesive NBR foam (Self-Adhesive NBR Foam) with adhesive backing

This self-adhesive NBR rubber-plastic insulation cotton is pre-coated on its back with high-performance pressure-sensitive adhesive and covered with a release liner; it can be applied simply by peeling off the liner before installation, eliminating the need for additional adhesive application. It is particularly suitable for irregularly shaped equipment, ductwork elbows, valves, and other areas where traditional fastening methods are difficult to implement – offering strong adhesion and resistance to detachment.

Product Features:

• High initial adhesion and long-lasting holding force; no delamination occurs across temperature ranges from-20°C to 80°C.

• The release paper is easy to tear and free of residual adhesive, ensuring a clean and tidy application process.

• Available in both sheet and pipe formats

• Suitable for various substrate surfaces, including metal, plastic, and glass.

2.4 Aluminum foil-faced NBR rubber-plastic insulation (Aluminum Foil Faced NBR)

                    Figure 5: NBR foam insulation boards (NBR Foam Insulation Boards)

The aluminum foil-coated NBR rubber-plastic insulation material features a composite aluminum foil layer (FSK) applied to the NBR substrate, providing both thermal insulation and vapor barrier functions. The aluminum foil layer effectively reflects thermal radiation and blocks water vapor penetration, enhancing insulation performance by more than 30%, while also improving the material's resistance to aging and ultraviolet radiation, thereby extending its service life in outdoor applications.

application scenarios ：

• Central air conditioning duct external insulation (most commonly used)

• Outdoor pipelines and equipment insulation

• Roof insulation and thermal performance

• Cold storage facilities and cold chain equipment insulation

III. Core Technical Specifications

IV. Six Core Competitive Advantages

🔥 Class B1 flame retardancy – safe and reliable

The product contains a high-performance flame retardant with an Oxygen Index ≥32%, complying with the GB 8624 Class B1 fire resistance standard and having obtained UL94 V-0 and FM 4924 certifications. It exhibits self-extinguishing properties upon removal of ignition source, does not drip or spread, and effectively ensures building fire safety.

❄ Ultra-low thermal conductivity – high energy efficiency

The closed-cell structure prevents air convection; at 0°C, its thermal conductivity is as low as 0.034 W/(m·K), providing exceptional insulation performance. When used in central air conditioning systems, it can reduce cooling capacity loss by 15%–25%, significantly lowering operating energy consumption.

💧 Closed-cell waterproofing – prevents condensation

The independent closed-cell structure features a water absorption rate of ≤5% and an exceptionally low moisture transmission coefficient, effectively preventing condensation and water droplet formation on pipeline surfaces while protecting equipment from corrosion; it is particularly suitable for high-humidity environments and the insulation of pipelines operating at low temperatures.

🔇 Shock absorption & sound insulation – reduce noise for enhanced comfort

Rubber material inherently possesses excellent damping properties, enabling it to absorb pipeline vibrations and reduce fluid noise, thereby making air conditioning system operation quieter and enhancing indoor comfort.

�� Soft texture; easy installation

Highly flexible, allowing for free bending and cutting to accommodate various irregularly shaped pipes and equipment. Equipped with a self-adhesive peel-and-stick film – no specialized tools required – enabling single-person installation; this approach increases efficiency by over 50% compared to traditional materials.

🌿 Eco-friendly and healthy – durable and long-lasting

Free from ozone-depleting substances such as CFCs and HCFCs, as well as formaldehyde and heavy metals; certified under RoHS and REACH environmental standards. Features mold-resistant, antibacterial, anti-aging properties, and excellent weather resistance; typical service life ranges from 15 to 20 years.

V. Application Areas

VI. Construction and Installation Guide

Step 1: Base Surface Preparation

Remove dust, oil contamination, rust, and moisture from the surface of pipelines or equipment; ensure the surface is dry and clean. For metal pipelines, it is recommended to apply a rust prevention treatment first.

Step 2: Measurement and Cutting

Measure and cut the NBR insulation material according to the pipe diameter or equipment dimensions. The pipe length should be slightly shorter than the actual length (with a allowance for shrinkage); when cutting sheet materials, account for the overlap allowance.

Step 3: Apply adhesive/粘贴

• Standard Type: Apply the specialized rubber-plastic insulation adhesive evenly along the NBR joints and on the pipe surface; allow it to dry for 3–5 minutes until it no longer sticks to the hand before joining and pressing firmly.

• Self-adhesive type: Remove the release paper, align the sheet directly for application, and press it evenly with your hand to eliminate air bubbles.

Step 4: Joint Treatment

All longitudinal and circumferential joints must be sealed with adhesive; no gaps are permitted. For pipelines with large diameters, it is recommended to use specialized straps for auxiliary fastening; these straps should be removed once the adhesive has cured.

Step 5: Elbow/Three-way fitting installation

For elbow connections, cut the pipe into "shrimp-waist" segments for splicing; for tee connections, drill holes according to the branch pipe's geometry and apply adhesive to seal the joints. It is recommended to use self-adhesive NBR tape for treating custom-shaped sections.

Step 6: External Protection

For outdoor applications or areas susceptible to mechanical damage, an aluminum foil, galvanized iron sheet, or PVC outer protective layer should be applied. For indoor use of products with aluminum foil coating, no additional external protection is required.

Step 7: Safety Precautions

Ensure proper ventilation during construction; since the adhesive is flammable, keep it away from open flames. It is recommended to wear gloves when handling the adhesive to prevent contact with the skin or eyes.

VII. Material Comparison: NBR Rubber & Plastic vs. Glass Wool vs. Rock Wool

Summary: NBR rubber-plastic insulation offers unparalleled advantages for low-temperature pipelines, air conditioning refrigerant pipes, and applications requiring stringent condensation prevention; in contrast, glass wool and rock wool are more suitable for high-temperature pipelines and building insulation applications with Class A fire resistance ratings. These two materials are often used in combination.

VIII. Packaging and Transportation

•板材:压缩打包,PVC薄膜封装;可适配托盘运输,显著节省集装箱装载空间.

• Pipe materials: Packaged in woven bags; bundled according to inner diameter specifications; fixed quantity per bag.

• Self-adhesive: Carton packaging with release paper protection to prevent adhesion under pressure.

• Export packaging: Fumigated pallets, custom labeling, Certificate of Origin (CO/Form A/E, etc.) can be provided.

• Trade terms: FOB, CIF, EXW, or DDP are all acceptable.

• Transportation options: Sea freight (FCL/LCL), Air freight, Land freight (Central Asia/Southeast Asia).

IX. About Us

We are a comprehensive enterprise specializing in the research, development, production, and export of rubber and plastic insulation materials. Our facility is equipped with multiple advanced NBR foaming production lines, boasting an annual production capacity of over 30,000 cubic meters. Our products are widely used in various sectors—including central air conditioning systems, building HVAC systems, cold chain logistics, and the automotive transportation industry—and are exported to more than 50 countries and regions across Europe, the Middle East, Southeast Asia, Africa, and South America.

Core Qualifications:

• ISO 9001 Quality Management System Certification

• CE – EU Product Certification

• UL94/FM 4924 Flame Retardancy Certification

• RoHS / REACH Environmental Certification

• SGS/BV Third-Party Testing Report

• In-house import and export rights; support for OEM/ODM customization (colors, density, specifications, and packaging can all be customized)