Open Cell Slow Rebound NBR PVC Sponge Foam

Slow Rebound NBR/PVC Sponge Foam for Sealing and Gap Filling

Topsun slow rebound NBR/PVC sponge foam is a soft and compressible rubber foam material for sealing, gap filling, cushioning, vibration damping and custom industrial foam components. It is suitable for applications where the foam needs to compress during assembly and maintain contact with irregular or uneven surfaces.

The current product range includes NBR/PVC foam in different densities, thicknesses and dimensions. Product information lists tensile strength from 160–450 kPa, elongation from 180–250%, standard sizes of 1000×2000 mm and 1500×2000 mm, and thicknesses from 1–50 mm.

NBR/PVC foam can be supplied as sheets, rolls, strips, pads, gaskets and custom die-cut parts. One-side or double-side adhesive backing can also be evaluated according to assembly and installation requirements.

Slow Rebound NBR/PVC Foam Key Features

• Soft compression: suitable for applications where low assembly force and flexible contact are required.

• Gap filling: compressible foam can adapt to variable gaps and uneven mating surfaces.

• Slow rebound behavior: suitable for applications requiring gradual recovery after compression; exact recovery performance should be confirmed for the selected grade.

• Surface conformability: flexible sponge foam can follow curves, corners and irregular shapes.

• Vibration damping: useful as a cushioning interface between assembled components.

• Noise reduction: soft foam can help reduce contact noise and vibration transmission in suitable assemblies.

• Custom fabrication: sheets, rolls, strips, pads and die-cut components can be produced according to drawings.

• Adhesive options: one-side or double-side adhesive backing can be added for easier positioning.

NBR/PVC Sponge Foam Product Information

Referenced NBR/PVC Foam Technical Data

The following table retains the technical data currently provided with this product family. Because the existing page includes both open-cell and closed-cell descriptions, confirm that the selected grade and cell structure correspond to the required application before production.

Cell Structure Selection for NBR/PVC Sponge Foam

NBR/PVC foam can be produced in different cellular structures. Open-cell and closed-cell materials behave differently under compression and should be selected according to the finished application.

For applications specifically requiring open-cell slow-rebound foam, confirm that the selected NBR/PVC grade and supporting technical data correspond to that cell structure before production.

Slow Rebound Foam for Irregular Gap Filling

Irregular mating surfaces can create variable gaps that are difficult to fill with rigid or high-compression materials. A soft sponge foam can deform around these differences and maintain contact over a larger surface area.

Slow rebound behavior is useful where the foam needs to remain compressed temporarily during installation before recovering toward the mating surfaces. The required recovery rate should be matched to the assembly process and finished sealing requirement.

Thickness selection is particularly important for gap filling. The foam should provide sufficient compression range without being excessively compressed in the final assembly.

Low Compression Foam for Lightweight Assemblies

Soft NBR/PVC sponge foam can be considered where mating components cannot tolerate high closure force. Typical examples include lightweight panels, plastic housings, thin sheet-metal components and other assemblies that may deform under excessive gasket pressure.

The referenced technical table lists compression deflection of ≤5.0 kPa, with a recorded result of 2.9 kPa. Final compression performance should be confirmed for the selected production grade.

NBR/PVC Sponge Foam for Vibration and Noise Reduction

Flexible sponge foam can act as a soft interface between components and help reduce direct contact, vibration transmission and rattling noise.

These properties make NBR/PVC foam suitable for selected automotive interiors, equipment housings, appliances, HVAC assemblies and other applications where cushioning and vibration isolation are required.

Typical Slow Rebound NBR/PVC Foam Applications

Custom Sheets, Rolls, Strips and Die-Cut Parts

Topsun can convert NBR/PVC sponge foam into different formats according to customer drawings and installation requirements.

How to Select Slow Rebound NBR/PVC Foam

• Cell structure: confirm whether the application requires open-cell or closed-cell construction.

• Compression force: identify the maximum closure force available in the assembly.

• Gap range: provide minimum and maximum assembled gap dimensions.

• Recovery behavior: specify whether gradual rebound is required and any project-specific recovery-time requirement.

• Thickness: select according to the available gap and intended compression.

• Density: specify the required grade where already known.

• Application environment: identify temperature, moisture, oil, fuel or other relevant exposure conditions.

• Adhesive requirement: specify plain foam, one-side adhesive or double-side adhesive.

• Finished dimensions: provide drawings for strips, pads or die-cut components.

• Estimated quantity: provide sample, trial and production quantities where available.

NBR/PVC Foam Product Image

Topsun Foam Processing Capabilities

Topsun provides foam material supply together with custom converting services for manufacturers, distributors and industrial component buyers.

1. Cutting: foam sheets and rolls can be cut according to required dimensions.

2. Slicing: foam materials can be sliced to the required thickness.

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

4. Laser Cutting: suitable custom foam shapes can be produced according to digital drawings.

5. Die Cutting: repeatable gaskets, pads, strips and other components can be produced according to customer designs.

6. Compression Molding: three-dimensional molded foam and foam composite components can be manufactured for suitable applications.

7. Engraving: suitable for tool-box inserts, packaging inserts and other customized foam products.

8. Silk-Screen Printing: logos and patterns can be printed on suitable foam surfaces.

9. Adhesive Backing: adhesive and release liner can be applied to suitable foam materials for tapes, strips, pads and custom components.

Foam Materials Available from Topsun

Topsun supplies NBR/PVC foam, NBR foam, EVA foam, PE foam, XPE foam, IXPE foam, CR foam, EPDM foam, neoprene foam, SBR foam and micro-cell soft PVC foam in sheet, roll and customized converted forms.

About Topsun Foam

Topsun supplies foam materials and customized foam components for automotive, HVAC, electronics, appliances, construction and industrial applications. Customers can provide density, thickness, compression requirements, drawings, samples and application details for product evaluation.

Our facility is located in Changzhou City, Jiangsu Province, China, with convenient access to Shanghai Port for international shipments.

Slow Rebound NBR/PVC Sponge Foam FAQ

What is slow rebound NBR/PVC sponge foam?

Slow rebound NBR/PVC sponge foam is a soft compressible foam material used where gradual recovery, cushioning, gap filling or low-force contact is required. The exact rebound behavior should be confirmed for the selected product grade.

Is this NBR/PVC foam open cell?

The product is listed as Open Cell Slow Rebound NBR/PVC Sponge Foam, while the existing technical content associated with the product family also includes closed-cell material data. For applications requiring specifically open-cell construction, confirm the selected grade and corresponding technical specification before ordering.

What is slow rebound foam used for?

Typical applications include irregular gap filling, soft sealing interfaces, cushioning, anti-rattle components, vibration damping, equipment panels and custom foam gaskets.

Why use slow rebound foam for irregular gaps?

A soft compressible foam can deform around uneven surfaces and variable gaps. Gradual recovery can also provide additional handling time during assembly before the foam expands toward the mating surfaces.

What is the density of the referenced NBR/PVC foam?

The broader product range lists densities from 50–150 kg/m³. The referenced technical data lists a 50–90 kg/m³ specification with a recorded result of 63.5 kg/m³.

What thicknesses are available?

The current product information lists thicknesses from 1–50 mm. The appropriate thickness depends on the available gap, intended compression and finished component design.

What is the compression deflection of the referenced grade?

The existing technical table lists compression deflection of ≤5.0 kPa according to ASTM D 1056, with a recorded test result of 2.9 kPa.

Can slow rebound NBR/PVC foam reduce vibration and rattling?

Flexible sponge foam can be used as a cushioning interface between components to help reduce vibration transmission and direct contact noise. Actual performance depends on density, thickness, compression and assembly design.

Can NBR/PVC sponge foam be die-cut into custom gaskets?

Yes. Topsun provides cutting and die-cutting capabilities for suitable foam materials. Custom strips, pads, gaskets and shaped components can be evaluated according to drawings or samples.

Can adhesive backing be added?

Yes. Existing product information lists one-side and double-side adhesive options. The bonding substrate and service environment should be provided when selecting the adhesive construction.

What information should I provide for material selection?

Please provide the required cell structure, minimum and maximum gap, foam thickness, density if known, required compression force, rebound requirement, operating environment, adhesive requirement, finished dimensions and estimated quantity.

How can I request a sample or quotation?

Send your requirements to july@topsunfoam.com, including thickness, density if known, cell structure, application, gap dimensions, compression requirements and estimated quantity for evaluation.