Complete Guide to Rubber Sheet, Sponge Rubber & Foam Materials

This rubber sheet guide explains the differences between EPDM, neoprene, nitrile, SBR, sponge rubber and polyethylene foam materials. Choosing the correct rubber material is essential for sealing, gasketing, vibration control, waterproofing and industrial protection. With so many materials available, including EPDM, neoprene, nitrile, SBR, sponge rubber and polyethylene foam, it can be difficult to know which one is best for your application.

This guide explains the differences between solid rubber, sponge rubber and foam materials, along with the advantages of each compound. Whether you need material for outdoor sealing, oil resistance, cushioning, transport protection or general fabrication, selecting the correct rubber sheet or foam product will ensure long-term performance and reliability.

If you are unsure which material to choose, you may also find our detailed comparison useful:
https://www.adsupply.co.uk/rubber-sheet-guide/

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Topic Summary

Use the guide below to jump to the section you need:

Types of Rubber Materials Explained
Solid Rubber vs Sponge Rubber vs Polyethylene Foam
EPDM rubber properties
Neoprene rubber properties
Nitrile rubber properties
SBR rubber properties
EPDM sponge, neoprene sponge & PE foam
Adhesives for rubber bonding
Comparison charts
FAQ – choosing the right rubber

This page is designed as a complete reference for anyone buying rubber sheet, sponge rubber or foam materials for industrial, construction or marine applications.

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Types of Rubber Materials Explained

Rubber materials are manufactured in different compounds depending on the performance required. Some are designed for outdoor weather resistance, others for oil and fuel resistance, while some are made for cushioning, sealing or insulation.

The most common materials used in industrial rubber sheet and foam products are:

Rubber compounds are selected based on resistance to weather, oils, temperature and compression, which is why different materials are used for different industries.
According to elastomer material data, EPDM provides excellent ozone and UV resistance, while nitrile offers superior resistance to oils and fuels, and neoprene provides a balance of weather and chemical resistance.
https://www.elastoproxy.com/material-properties-rubber-compounds/

Understanding these differences is the first step when selecting the correct rubber sheet or foam product. If you are looking for material suitable for gaskets please read our article exploring the benefits of each rubber grade when in gasket format.

Best Rubber for Gaskets – EPDM vs Neoprene vs Nitrile vs SBR

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Solid Rubber vs Sponge Rubber vs Polyethylene Foam

One of the most common mistakes when buying rubber materials is choosing the wrong structure rather than the wrong compound.

Rubber products are available in three main forms:

• Solid rubber

• Sponge rubber (closed cell)

• Polyethylene foam

Each behaves differently when compressed, bonded or exposed to weather.

Solid Rubber

Solid rubber sheet is dense and durable.
It is used when strength, wear resistance or structural support is required.

Typical uses:

• Gaskets

• Pads

• Anti-vibration mounts

• Industrial sealing

• Flooring

• Mechanical protection

Solid rubber is available in materials such as EPDM, neoprene, nitrile and SBR.

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Sponge Rubber

Sponge rubber contains tiny closed air cells which allow the material to compress and recover.
This makes it ideal for sealing applications where flexibility and cushioning are required.

Typical uses:

• Door seals

• Enclosures

• Waterproof seals

• Marine sealing

• HVAC systems

• Expansion joints

Closed-cell sponge rubber prevents water absorption, which makes it suitable for outdoor use.

More detail on sponge materials can be found here:
https://www.adsupply.co.uk/what-is-epdm-foam-sponge-buying-guide/
https://www.adsupply.co.uk/neoprene-sponge-cord-guide/

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Polyethylene Foam

Polyethylene foam is lighter than rubber and is commonly used for protection, insulation and cushioning rather than sealing.

Typical uses:

• Transport protection

• Packaging

• Panel protection

• Thermal insulation

• Gap filling

• Shock absorption

Closed-cell polyethylene foam is waterproof and resistant to many chemicals, which makes it suitable for construction, marine and industrial applications.

See our full guide:
https://www.adsupply.co.uk/closed-cell-polyethylene-foam-buying-guide/
https://www.adsupply.co.uk/closed-cell-pe-foam-vs-epdm-foam/

Closed-cell foam materials are widely used in sealing and insulation because the cell structure prevents water absorption while allowing compression and recovery. If you’re combining rubber with other materials, our strongest glue for metal to plastic guide explains suitable adhesive systems.

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Comparison Chart – Solid Rubber vs Sponge Rubber vs Foam

Choosing between these materials depends on whether strength, flexibility or cushioning is most important.

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Why Choosing the Correct Rubber Material Matters

Using the wrong rubber compound can lead to:

• Cracking outdoors

• Swelling in oil

• Poor sealing

• Adhesive failure

• Compression damage

• Water leaks

For example, SBR rubber is suitable for general indoor use but not for outdoor weather exposure, while EPDM performs very well outside but is not suitable for oil contact.

Selecting the correct rubber sheet or sponge material at the start avoids premature failure and reduces long-term maintenance costs.

In many applications, the rubber must also be bonded to metal, plastic or other materials.
If bonding is required, see:

https://www.adsupply.co.uk/which-adhesive-for-rubber-bonding/
https://www.adsupply.co.uk/best-adhesive-for-epdm-rubber/
https://www.adsupply.co.uk/best-adhesive-for-foam-to-metal/

Adhesive compatibility is often just as important as material selection.

EPDM Rubber Properties

EPDM is one of the most widely used rubber materials for outdoor and weather-exposed applications. It offers excellent resistance to UV, ozone, water and temperature changes, making it ideal for sealing, roofing, construction and marine use.

EPDM rubber sheet is commonly used where long-term durability is required in external environments. Unlike many other rubber compounds, EPDM does not crack or become brittle when exposed to sunlight or rain, which is why it is frequently used for roofing membranes, gaskets, expansion joints and waterproof seals.

Typical uses for EPDM include:

• Outdoor seals

• Roofing and waterproofing

• Window and door gaskets

• Marine applications

• HVAC systems

• Expansion joints

• Weatherproof enclosures

EPDM is also available in sponge form, which allows compression while maintaining a waterproof seal.

See full guide:
https://www.adsupply.co.uk/what-is-epdm-foam-sponge-buying-guide/

When bonding EPDM to metal, concrete or plastic, the correct adhesive must be used to ensure long-term performance.

Recommended guide:
https://www.adsupply.co.uk/best-adhesive-for-epdm-rubber/

EPDM is known for excellent resistance to ozone, UV and weathering, which makes it one of the most commonly used elastomers for outdoor sealing applications. Buy EPDM here

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Neoprene Rubber Properties

Neoprene is a versatile rubber compound that provides a balance of weather resistance, oil resistance and mechanical strength. Because of this, it is often used where the material needs to perform well in a wide range of conditions.

Neoprene rubber sheet is commonly used in marine, automotive and industrial applications because it resists water, moderate oils and many chemicals.

Typical uses include:

• Marine seals

• Gaskets

• Machinery pads

• Anti-vibration mounts

• Enclosure seals

• Automotive components

• General industrial sealing

Neoprene is often chosen when EPDM is not suitable due to oil exposure, but full oil resistance is not required.

Neoprene is also available as sponge rubber for compressible sealing applications. Neoprene sponge cord is widely used for sealing, cushioning and vibration damping where a round compressible profile is required.
View neoprene sponge cord available in multiple diameters.

See related guide:
https://www.adsupply.co.uk/neoprene-sponge-cord-guide/

Neoprene provides good resistance to weathering, moderate oils and chemicals, which makes it a widely used general-purpose sealing material.

When bonding neoprene or other rubber materials, adhesive selection is important. Buy neoprene here

Guide:
https://www.adsupply.co.uk/which-adhesive-for-rubber-bonding/

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Nitrile Rubber Properties

Nitrile rubber is designed for applications where resistance to oils, fuels and greases is required. This makes it one of the most common materials used in automotive, engineering and industrial environments.

Unlike EPDM, nitrile is not designed for long-term outdoor exposure, but it performs extremely well when in contact with petroleum-based fluids.

Typical uses for nitrile rubber include:

• Oil resistant gaskets

• Fuel seals

• Hydraulic systems

• Automotive components

• Industrial machinery

• Workshop flooring

• Pipe seals

Nitrile rubber sheet is often used in workshops, factories and mechanical equipment where oil contact would damage other rubber materials.

Nitrile rubber offers excellent resistance to oils and fuels, making it suitable for automotive and industrial sealing applications.
External reference: https://en.wikipedia.org/wiki/Nitrile_rubber

When bonding nitrile rubber, solvent-based contact adhesives or polyurethane adhesives are often used.

See guide:
https://www.adsupply.co.uk/which-adhesive-for-rubber-bonding/

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SBR Rubber Properties

SBR (Styrene Butadiene Rubber) is a general-purpose rubber material commonly used where high performance is not required but durability and cost-effectiveness are important.

It is one of the most widely used rubber compounds for indoor applications because it offers good abrasion resistance and flexibility at a lower cost than neoprene or EPDM.

Typical uses for SBR rubber include:

• General gaskets

• Flooring

• Pads and strips

• Workshop use

• Packing pieces

• Anti-slip surfaces

• Industrial protection

SBR rubber sheet is not recommended for outdoor use because it has limited resistance to UV and ozone, which can cause cracking over time.

SBR is often selected for indoor or general-purpose applications where oil resistance and weather resistance are not required. Buy SBR material here

SBR rubber is widely used as a general-purpose material due to its durability and low cost, although it has limited resistance to weather and oils.
External reference: https://www.walker-rubber.co.uk/knowledge-hub/rubber-material-properties-367

For sealing or outdoor applications, EPDM or neoprene may be more suitable.

See comparison guide:
https://www.adsupply.co.uk/rubber-sheet-guide/

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EPDM Sponge, Neoprene Sponge & PE Foam

Choosing the correct material depends on the environment, temperature, exposure to oils and the amount of compression required.

If the material needs to compress to form a seal, sponge rubber or foam may be more suitable than solid rubber. For the best rubber for vibration pads read our guide Best Rubber for Vibration Pads & Anti-Vibration Mounts (Complete Guide)

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When to Use Sponge Rubber or Foam Instead of Solid Rubber

Solid rubber is strong and durable, but in many sealing applications a compressible material is required.

Sponge rubber and foam materials allow the seal to compress and recover, which helps prevent water, air or dust from passing through the joint. To learn which thickness rubber you require read our guide on sizing here.

Closed-cell materials are commonly used for sealing because they do not absorb water.

Examples include:

• EPDM sponge

• Neoprene sponge

• Polyethylene foam

More detail here:

https://www.adsupply.co.uk/closed-cell-pe-foam-vs-epdm-foam/
https://www.adsupply.co.uk/closed-cell-polyethylene-foam-buying-guide/

In applications where the material must also be bonded, the correct adhesive should be selected.

See:

https://www.adsupply.co.uk/best-adhesive-for-foam-to-metal/
https://www.adsupply.co.uk/best-adhesive-for-epdm-rubber/
https://www.adsupply.co.uk/which-adhesive-for-rubber-bonding/

EPDM Sponge Rubber, Neoprene Sponge & Polyethylene Foam

In many sealing and protection applications, solid rubber is not suitable because the material needs to compress to form a tight seal. In these cases, sponge rubber or closed-cell foam materials are used instead.

These materials contain air pockets which allow them to compress under pressure and return to their original shape once released. This makes them ideal for waterproof sealing, vibration isolation and cushioning.

Common sponge and foam materials include:

• EPDM sponge

• Neoprene sponge

• Polyethylene foam

Each material has different properties depending on the environment and the amount of compression required. For help regarding neoprene vs EPDM read our guide EPDM vs Neoprene Sponge Rubber – Which Should You Use?

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EPDM Sponge Rubber

EPDM sponge is a closed-cell rubber material designed for outdoor sealing and waterproof applications.

Because the cells are closed, water cannot pass through the material, which makes it suitable for:

• External seals

• Roofing systems

• Door and window seals

• HVAC sealing

• Marine applications

• Expansion joints

EPDM sponge performs well in sunlight, rain and temperature changes, which makes it one of the most common sealing materials used in construction and building applications. Buy EPDM sponge rubber here

More information:
https://www.adsupply.co.uk/what-is-epdm-foam-sponge-buying-guide/

EPDM sponge is often used together with EPDM tapes for waterproof sealing.

Related product guide:
https://www.adsupply.co.uk/epdm-resilient-building-tape-waterproof/

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Neoprene Sponge Rubber

Neoprene sponge offers similar compression properties to EPDM sponge but provides better resistance to oils and chemicals.

This makes it suitable for:

• Marine sealing

• Machinery enclosures

• Automotive seals

• Industrial gaskets

• Equipment housings

Neoprene sponge is commonly used where the material must compress but also resist moderate oil or chemical exposure. Buy neoprene sponge rubber here

See guide:
https://www.adsupply.co.uk/neoprene-sponge-cord-guide/

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Polyethylene Foam

Polyethylene foam is lighter than rubber and is mainly used for protection, insulation and cushioning rather than structural sealing.

It is commonly used for:

• Transport protection

• Panel protection

• Packaging

• Gap filling

• Thermal insulation

• Shock absorption

Closed-cell polyethylene foam does not absorb water and provides good resistance to many chemicals, making it suitable for construction, marine and industrial use. Buy polyethylene foam here

Full guide:
https://www.adsupply.co.uk/closed-cell-polyethylene-foam-buying-guide/

Comparison guide:
https://www.adsupply.co.uk/closed-cell-pe-foam-vs-epdm-foam/

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Comparison Chart – Sponge Rubber vs Foam

Selecting the correct material depends on whether the application requires sealing, cushioning or protection.

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Adhesives for Rubber Bonding

In many applications, rubber and foam materials need to be bonded to metal, plastic, wood or concrete. Choosing the correct adhesive is important because not all glues will bond to rubber surfaces. Before choosing an adhesive, it’s worth reading our breakdown of the best glue for rubber and common mistakes to avoid.

Rubber compounds can contain oils and additives which prevent some adhesives from curing correctly.

Common adhesive types used for rubber bonding include:

• Contact adhesive

• Polyurethane adhesive

• Hybrid polymer adhesive

• Epoxy adhesive

• Rubber & neoprene adhesives

Guide to rubber bonding:
https://www.adsupply.co.uk/which-adhesive-for-rubber-bonding/

Guide for EPDM bonding:
https://www.adsupply.co.uk/best-adhesive-for-epdm-rubber/

Guide for foam bonding:
https://www.adsupply.co.uk/best-adhesive-for-foam-to-metal/

Using the correct adhesive helps prevent:

• Delamination

• Seal failure

• Water leaks

• Movement in joints

For sealing applications, EPDM tapes are often used instead of liquid adhesive. In applications where carbon fibre components are combined with rubber or flexible materials, selecting the correct adhesive is essential to handle movement and stress.

See:
https://www.adsupply.co.uk/epdm-resilient-building-tape-waterproof/

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Comparison Charts

This chart shows why different materials are required for different environments.

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FAQ – Choosing the Right Rubber

What rubber is best for outdoor use?

EPDM is usually the best choice for outdoor applications because it resists UV, ozone and water.

What rubber is best for oil resistance?

Nitrile rubber is designed for oil and fuel contact.

What rubber should I use for sealing?

Closed-cell sponge rubber such as EPDM sponge or neoprene sponge is often used for sealing.

What rubber is best for protection and cushioning?

Polyethylene foam is commonly used for protection and transport applications.

What rubber sheet should I use?

The correct rubber sheet depends on:

• Environment

• Compression required

• Exposure to oil

• Outdoor or indoor use

• Temperature

If unsure, see the full rubber material guide:
https://www.adsupply.co.uk/rubber-sheet-guide/

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Conclusion

Selecting the correct rubber sheet, sponge rubber or foam material is essential for achieving reliable sealing, protection and long-term durability. Different materials offer different levels of resistance to weather, oil, compression and temperature, which is why understanding the properties of each compound is important before choosing a product.

Solid rubber materials such as EPDM, neoprene, nitrile and SBR provide strength and durability, while sponge rubber and polyethylene foam offer flexibility, cushioning and improved sealing performance.

By using the correct material and adhesive for the application, you can ensure the best possible performance in construction, marine, industrial and general engineering projects.

For more detailed information, see our related guides throughout this page or browse our full range of rubber sheet, sponge rubber and foam materials available for immediate supply. Here’s a conclusion summary for which industry each material might be best suited. This rubber material guide should help you choose the correct rubber sheet, sponge rubber or foam material for your application.

Use	Best material
Outdoor sealing	EPDM
Oil resistance	Nitrile
Marine	Neoprene
Cheap indoor	SBR
Cushioning	Sponge
Protection	PE foam