| June 30, 2025
For industries and businesses, protection in packaging is essential. However, protecting components like electrical devices or metallic materials tends to be a bit more complicated, due to their composition, delicate components, or materials that can corrode from other chemicals.
One of the main risks for these systems is sulfur corrosion, caused by sulfur-cured materials that release corrosive gases over time. At Worldwide Foam, we offer an effective and reliable solution: foam from EDPM sulfur-free, cured with peroxide.
That is why, in the following blog, we provide you with the necessary information you need about EDPM sulfur-free, which also can act as a foam for other types of applications, outside of packaging and packing.
Why choose sulfur-free EDPM foam?
The foam of EDPM (ethylene-propylene-diene monomer) is widely used in industrial, automotive, and lighting applications thanks to its excellent resistance to aging, heat, UV rays, and ozone.
However, many traditional EDPM foams are cured with sulfur, which poses a significant risk to copper, silver, and other sensitive metal components. Our line of EDPM sulfur-free products, cured with peroxide, eliminates this risk.
Thanks to its sulfur-free formulation, these foams minimize the possibility of sulfur corrosion, effectively protecting electrical systems and extending the lifespan of devices.
Main features of our sulfur-free EDPM foam
The EDPM is a closed-cell foam, like many of those handled at Worldwide Foam, however, the fact that it is noise-reducing and sulfur-free gives it other key features. Below are the most outstanding ones.
Sulfur-free
As mentioned in the previous paragraph, it is a foam 100% free of sulfur to avoid chemical reactions that cause deterioration in electrical components and protect them from any impact, while ensuring that there will be no corrosion inside.
High compatibility
Being a polyethylene foam free of corrosive components like sulfur, its compatibility with sensitive materials such as copper and silver is highly efficient. Therefore, the packaging, crosslinking or packing of products such as electronic devices, which generally have these metals, is fully compatible.
Weather resistance
On the other hand, the sulfur-free EDPM performs excellently against UV rays, ozone, and extreme temperatures. Therefore, its use for other types of applications, apart from packaging, is possible.
Thermal and electrical insulation properties
The polyethylene foam EDPM has thermal insulation, which ensures its protection in complicated environments, such as with high humidity or high temperatures, are always protected.
On the other hand, the electrical insulation is convenient for electronic devices, such as computers or cell phones, washing machines or mini components, ensuring that no electrical discharge can affect their internal components
Durability
Its formulation to preserve its physical properties over the long term is another of its main features, so they can be stored for a longer time, unlike other foams
Available models of sulfur-free EDPM
At Worldwide Foam we offer two options of EDPM sulfur-free foam certified under ASTM D1056 2A1 / 2A2: EPDM 5420 and EPDM 5440 Both models are cured with peroxide, and offer an optimal balance between flexibility, resistance, and durability. They are designed to be used as foam, sealing gaskets, packings, or insulators in demanding environments.
Applications of sulfur-free EDPM foam
The combination of physical properties, environmental resistance, and compatibility with metal components makes this foam a versatile solution for various industries.
1. Electrical devices
Prevents sulfur corrosion in sensitive contacts and circuits made of copper or silver.
2. Automotive industry
Used in sealing doors, hoods, and panels, where it acts as foam, thermal insulator, and barrier against dust and moisture.
3. Lighting and electronics
Protects LED modules, ballasts, and sensitive boards, preventing damage from corrosion and improving the system's lifespan.
4. Construction and HVAC
In ventilation and air conditioning systems, the foam EDPM acts as an insulation seal and vibration control.
Benefits of working with Worldwide Foam
Wide availability: products ready to ship from our logistics centers in the U.S.
Quality consistency: our products meet the industry's most demanding standards.
Specialized technical support in applications of foam and protection of metal components.
Custom solutions: possibility to customize the material according to the needs of your project.
The foam of EDPM sulfur-free that we offer at Worldwide Foam represents an advanced technical solution for the protection of electrical devices, copper, silver, and other sensitive metal components.
Its sulfur-free composition eliminates the risk of sulfur corrosion, while its physical properties make it an ideal material for sealing, insulation, and cushioning.
If you want to learn more about the features of this and other types of polyethylene foams or which is the most suitable for your needs, contact us to receive a sample of our foams.
Discover why we are leaders in high-performance foams solutions at Worldwide Foam.
Worldwide Foam
We are leaders in the supply of closed cell polyethylene foam in Mexico. We support various industries by offering a wide range of products and complementary services.
