Altanto provides solutions that ensure resistance to harsh industrial conditions and longevity. Businesses operating in chemical processing, oil and gas, and manufacturing that choose the correct seal can reduce downtime, prevent leaks, and protect their systems.
In this guide, Altanto explores the key benefits of chemical-resistant rubber seals and highlights the top materials – Ethylene Propylene Diene Monomer (EPDM) and Viton that excel in industrial settings.
What Are Rubber Seals and Why Do They Matter?
Rubber seals are an essential component in preventing leaks and protecting machinery. Seals ensure the proper containment of vapours, fluids, or gases while also withstanding temperature extremes and high pressure. Choosing the right rubber seal material is crucial to extend equipment lifespan, prevent wear and tear, and minimise production interruptions and costly maintenance.
Industries That Rely on Rubber Seals
Oil & Gas Industry
The oil and gas industry requires seals that can resist exposure to fuels, hydrocarbons, and extreme temperatures. Rubber seals in these environments must withstand both exposure to corrosive chemicals and high pressure. Viton seals are a popular solution due to their ability to perform in high-temperature settings and resistance to hydrocarbons.
Chemical Processing
In chemical processing facilities, machinery and equipment are regularly exposed to solvents, acids, and alkalis. Rubber seals used in storage tanks, reactors, and piping systems need to provide strong chemical resistance to prevent leaks and corrosion. Seals made from EPDM are often selected for their ability to withstand aggressive chemicals and maintain their integrity over time.
Manufacturing
Manufacturing industries, such as those involved in the production of chemicals, electronics, and pharmaceuticals, require rubber seals to ensure operational efficiency and protect equipment from chemical exposure. Viton seals and EPDM are regularly utilized for their resistance to temperature fluctuations and corrosive substances.
The Top Materials for Chemical-Resistant Rubber Seals
EPDM Rubber Seals
EPDM is one of the most widely used materials for chemical-resistant rubber seals, known for its excellent resistance to acids, alkalis, and oxygenated solvents.
Key Advantages:
• Chemical Resistance: EPDM rubber seals are highly resistant to a variety of chemicals, including detergents, phosphate esters, and alcohols, making them suitable for industries that handle acidic and alkaline substances.
• Temperature Range: EPDM rubber seals maintain their sealing performance and flexibility in temperatures ranging from -50°C to 150°C. This makes them ideal for hot and cold applications.
• Weather and UV Resistance: EPDM performs well in outdoor environments, withstanding ozone and UV radiation, as well as extreme weather conditions.
• Applications: EPDM seals are commonly used in oil refineries, manufacturing facilities, and chemical processing plants. They are ideal for hydraulic systems, O-rings, and gaskets.
Viton Rubber Seals
Viton (FKM) is a rubber material that offers resistance to solvents, oils, and hydrocarbons. These seals are held in regard for their chemical resistance and ability to withstand extreme temperatures and pressure.
Key Advantages:
• Heat Resistance: Viton rubber seals can withstand environments with temperatures as high as 250°C, making them ideal for high-temperature industrial applications.
• Chemical Resistance: Viton is resistant to fuels, oils, and chemical solvents, making it the go-to material for applications in the oil and gas industry.
• Durability: Viton’s durability makes it suitable for applications where seals are exposed to corrosive chemicals and must maintain their performance over extended periods.
• Applications: Viton rubber seals are often used in industrial machinery, refineries, and petrochemical plants where exposure to fuels, solvents, and hydrocarbons is high. Their heat resistance and durability make them suitable for O-rings, valves, and gaskets in extreme conditions.
Making the Right Choice for Rubber Seals
While both EPDM and Viton offer chemical resistance, the best choice will depend on the specific industrial requirements.
• EPDM is suitable for applications where exposure to weather elements, acids, and alkaline solutions is common. It is also more cost-effective for large-scale applications where moderate chemical exposure is present.
• Viton is ideal for industries handling solvents, hydrocarbons, and oils, or environments requiring high-temperature resistance. The high-performance characteristics make it suitable for heavy-duty applications.
Key Considerations When Choosing Rubber Seals
When choosing rubber seals for industrial use, there are a range of factors that must be taken into account to ensure the seal meets the demands of the application.
Chemical Compatibility
Understanding the chemicals the seals will be exposed to is critical. Both EPDM and Viton excel in resisting different types of chemicals, so choose the material that offers the best chemical compatibility for the specific environment.
Pressure Resistance
In industries like oil and gas, where equipment is subject to high pressures, it’s important to choose a seal material that can maintain its integrity without deformation. Viton is particularly known for its resistance to high pressure and harsh environments.
Durability and Lifespan
While initial cost is an important consideration, choosing a durable seal material can lead to long-term savings by reducing the frequency of maintenance and replacements. Viton seals typically offer better longevity than EPDM in extreme conditions.
Temperature Range
If the application involves extreme heat or cold, make sure to select a seal material that can perform well under those conditions. EPDM seals are ideal for moderate temperatures, while Viton is more appropriate for high-temperature applications.
