Closed Cell NBR Rubber Foam

Closed Cell NBR Rubber Foam Sheet and Roll for HVAC, Pipe Insulation and Sealing

Topsun closed cell NBR rubber foam, also known as NBR/PVC foam or rubber-plastic sponge foam, is a flexible closed-cell insulation and sealing material designed for HVAC insulation, pipe insulation, duct insulation, condensation control, oil resistance, cushioning, gaskets and industrial sealing applications.

NBR/PVC foam provides low thermal conductivity, high moisture resistance, good compression performance, fuel and oil resistance, acid resistance and flexible installation. It can be supplied as sheets, rolls, tubes, strips, adhesive-backed foam, die-cut gaskets and custom foam parts according to customer requirements.

NBR Foam NBR/PVC Open Cell or Closed Cell Features

• Density range: 50-150kg/m³, with common insulation foam density from 50-90kg/m³.

• Size: 1000-1800mm width, commonly supplied in 10m roll length.

• Thickness: mainly 3mm-50mm, with custom thickness available according to application requirements.

• Color: black is the main color; red, purple, blue and other custom colors can be produced according to Pantone color requirements.

• Excellent resistance to acid, fuel and oil, suitable for industrial equipment, HVAC systems and mechanical protection.

• Adhesive backing can be applied on one side or double sides for easier installation and assembly.

Specification of NBR/PVC Foam

What Is NBR/PVC Foam?

NBR/PVC foam is a soft, closed-cell rubber-plastic sponge foam made from nitrile rubber and PVC. It is commonly used as thermal insulation material for HVAC systems, refrigeration equipment, chilled water pipes, condenser water pipes, air ducts, hot water pipes and industrial sealing applications.

The closed-cell structure gives NBR/PVC foam low thermal conductivity, strong moisture resistance and good resistance to water vapor penetration. This makes it especially suitable for low-temperature pipeline insulation where condensation prevention is important.

Economical: Flexible and easy to handle, with width options that support easier installation on ducts and large equipment surfaces.

Practical: Self-adhesive surface options improve bonding to metal ducts and equipment surfaces.

Convenient: Roll and sheet formats can reduce application time and installation cost for prefabricated ducts.

Flexible: High elasticity helps attenuate vibration around joints, suspensions and equipment connections.

Features of NBR Foam Roll and Sheet

• Closed cell structure material for insulation, sealing and condensation control.

• Low thermal conductivity for HVAC, pipe insulation and refrigeration applications.

• High moisture resistance and water vapor resistance for cold pipe insulation.

• Can be cut into sheets, rolls, strips, tapes, gaskets and custom die-cut foam parts.

• Excellent ageing performance for industrial and building insulation systems.

• Good weathering, UV and ozone resistance for many indoor and outdoor protection applications.

• Multiple densities and thicknesses available for different insulation, sealing and cushioning requirements.

Applications of Closed Cell NBR Rubber Foam

Closed cell NBR rubber foam is widely used for central air-conditioning systems, refrigeration units, chilled water pipes, condenser water pipes, air ducts, hot water pipes, HVAC insulation, mechanical equipment insulation, vehicle insulation, acoustic damping, gasket sealing and self-adhesive foam tape applications.

Because of its moisture resistance and thermal insulation performance, NBR/PVC foam is especially useful for preventing condensation on low-temperature pipelines, duct systems and refrigeration equipment.

Custom NBR Foam Sheet, Roll, Strip and Adhesive Tape Options

Topsun can supply NBR/PVC foam in sheets, rolls, strips, tubes, tapes, die-cut gaskets and adhesive-backed foam products. Custom options include thickness, density, width, length, color, adhesive backing, single-side adhesive, double-side adhesive, lamination, slitting, die cutting and packaging method.

For HVAC and pipe insulation projects, customers should confirm pipe diameter, insulation thickness, service temperature, condensation condition, flame-retardant requirement, installation surface and adhesive requirement. These details help determine the right NBR/PVC foam grade and structure.

Topsun Foam Processing Capability

Topsun is a professional supplier of foam materials and custom foam products. We can provide EVA foam, PE foam, XPE foam, IXPE foam, CR foam, EPDM foam, neoprene foam, SBR foam, NBR foam and micro-cell soft PVC foam. At the same time, we have advanced processing capabilities to convert foam materials into the products you need.

1. Cutting: cut foam sheets, rolls, strips or parts according to customer size requirements.

2. Slicing: slice foam thickness according to the required specification.

3. Lamination: provide hot melt film lamination, flame lamination and pressure-sensitive adhesive lamination.

4. Laser cutting: cut foam drawings without opening molds for some customized foam shapes.

5. Die cutting: open molds according to customer design and produce foam pads, seals and inserts efficiently.

6. Compression molding: manufacture three-dimensional molded foam and foam composite parts with defined geometry and dimensional requirements.

7. Engraving: produce tool box inserts and packaging inserts according to customer requirements.

8. Silk-screen printing: print logos and patterns on the surface of foam products.

9. Adhesive backing: apply adhesive and release liner to produce foam tapes and self-adhesive foam parts.

About Topsun Foam

Topsun is a professional foam supplier with custom converting capabilities for insulation, sealing, cushioning, packaging and protective foam applications. Our foam materials can be supplied as sheets, rolls, strips, tapes, tubes, molded parts and die-cut products.

Our factory is located in Changzhou City, Jiangsu Province, about one hour by road to Shanghai Port. Topsun provides foam material selection, custom processing, sample support and OEM foam converting services for customers worldwide.

NBR/PVC Foam FAQ

What is closed cell NBR rubber foam?

Closed cell NBR rubber foam is a flexible rubber-plastic sponge foam made from NBR and PVC. It has a closed-cell structure, low thermal conductivity, moisture resistance, oil resistance and good insulation performance for HVAC, pipe insulation and sealing applications.

What is NBR/PVC foam used for?

NBR/PVC foam is used for HVAC insulation, refrigeration equipment, chilled water pipes, condenser water pipes, air ducts, hot water pipes, duct insulation, gasket sealing, vibration damping, acoustic insulation and adhesive foam tape products.

Is NBR foam suitable for pipe insulation?

Yes. NBR/PVC closed cell foam is widely used for pipe insulation because it provides low thermal conductivity and high water vapor resistance. It helps reduce energy loss and prevent condensation on chilled water and low-temperature pipelines.

Can NBR foam resist oil and fuel?

NBR/PVC foam has good resistance to acid, fuel and oil, making it suitable for many mechanical, industrial and equipment insulation applications. Final material selection should consider the specific chemical type, contact time and working temperature.

Can Topsun supply NBR foam with adhesive backing?

Yes. Topsun can provide NBR/PVC foam with one-side or double-side adhesive backing. It can be supplied as adhesive NBR foam sheets, rolls, strips, tapes and die-cut parts for easy installation.

Can Topsun customize NBR foam thickness, density and color?

Yes. Topsun can customize NBR foam density, thickness, width, length, color, adhesive backing, lamination and die-cut shape. Black is the main color, and other colors can be produced according to customer requirements.

How do I choose the right NBR/PVC foam?

To choose the right NBR/PVC foam, confirm thickness, density, service temperature, pipe diameter, insulation purpose, condensation condition, oil resistance requirement, flame-retardant requirement, adhesive backing and installation method.

How can I get samples of closed cell NBR rubber foam?

Send your inquiry to july@topsunfoam.com with your required thickness, density, size, color, adhesive backing requirement, application and estimated quantity. Topsun will check your requirements and reply within 24 hours.