Rubber material is used widely in many operations and is deemed rather important. Seals, gaskets, hoses, and numerous other products are made from them. FKM and EPDM are two types of rubber that however differ in properties. Each of them has its characteristics that provide successful usage in specific conditions. Simply, finding the differences between them is very important so that you can pick the right one for your work.

What is FKM Rubber?

FKM – It is also referred to as fluoroelastomer which is a synthetic rubber. The material is extremely heat as well as chemically and oil-resistant. These properties make it a first preference in industries that require products with high resistance under different circumstances.

High-temperature tolerance is one of FKM’s largest advantages common for all types of materials. In addition, it functions well in conditions over 200°C. This makes it suitable for automotive applications; aerospace and other industrial uses. FKM is used in or for engine seals and gaskets, fuel system components, etc.

Chemical resistance is also a plus of this FKM. This cutlery is resistant to shock and can come into contact with adverse substances such as fuels, oils, acids, and solvents. This is why adoption of this type of control is common in the chemical processing industries and oil industries. FKM also therefore has the ability to maintain its strength and flexibility when used over time and when only stressed. 

However, FKM has limitations. It has a relatively low degree of ozone or UV light resistance. This means it cannot work well within outdoor conditions unless it is put under some form of protective covering.

What is EPDM Rubber?

EPDM means ethylene propylene diene monomer. Like FKM, it is a synthetic rubber although it is intended for an entirely different application. EPDM is also famous for its quality and durable weather resistance. They do not decompose when exposed to ozone, ultraviolet light, or subjected to rough physical and climatic challenges.

EPDM rubber works effectively within a broad range of temperatures, that directly translated include -40 degrees centigrade to 120 degrees centigrade. This makes it suitable to be used in both hot and cool periods as has been indicated over. A few of the applications include roofing materials, automobile weatherstripping such as car doors and windows, and heating and air conditioning systems. For details, read more.

EPDM also possesses excellent resistance to water and steam and is thus widely used for plumbing purposes. Besides, it is highly compatible with other materials and can be applied in various conditions to create various structures.

Nevertheless, still, there are shortcomings of using EPDM: 

It is softer, less heat and chemical resistance as compared to FKM. EPDM may also deteriorate when it is exposed to fuel, oil as well as solvents. EPDM Rubber Extrusion Manufacturer – Seashore ensures all the optimum qualities in Rubber.

It is important to distinguish some factors between FKM and EPDM:

1. Temperature Resistance

FKM: Endures temperatures more than 200 o C.

EPDM: May be used in temperatures up to 120°C.

2. Chemical Resistance

FKM: Excels in its resistance to fuels, oil, and other aggressive chemicals.

EPDM: It is neither attacked by water, steam, and mild chemical solutions and reagents but, is dissolved by oils and organic solvents.

3. Weather Resistance

FKM: Some products can be degraded by exposure to UV or ozone light.

EPDM: High resistance to UV, ozone, and abrasion and thus good resistance to weathering.

4. Flexibility

FKM: Does not fail under high heat and stress.

EPDM: It stays supple in conditions including extreme and sudden chilling temperatures.

5. Cost

FKM: Coster than steel because it has better heat and chemical resistance.

EPDM: Less expensive and appropriate for overall use.

6. Durability

FKM: The one that would last long when exposed to unfavorable conditions.

EPDM: It would withstand ordinary wear in outdoor and wet environments.

Applications of FKM

FKM is the preferred material for high-temperature and chemical-resistant applications. Some of its common applications include:

• Automotive seals and gaskets with fuel systems.
• Components in airplanes that are sensitive to heat and chemical exposures.
• Structural equipment employed in chemical industries.
• Types of equipment used in the oil and gas industry.
• It also possesses higher chemical resistance that makes it work well even when used under conditions of constant exposure to chemical products.

Applications of EPDM

EPDM is ideal for use in outdoor and weather elements requirements. It is widely used in:

• Weatherproofing membranes for long-term usage.
• Proper fitting of window and door to avoid any air and water infiltrations.
• Heating Ventilation and Air condition system, sealants, and insulation.
• Products and building construction where water and steam are resisted into the building.
• Due to general-purpose applications of EPDM, it is a flexible and inexpensive material for most applications.

Choosing the Right Rubber

It is therefore advisable to look at certain aspects as you decide between using FKM or EPDM on your project. Go for FKM if the application exposes application to heat, oils, or raw chemicals. America KJM is suitable for industries such as automotive, aerospace, and refining.

EPDM is appropriate if you are in search of a material that will be resistant to the weather, UV light, and water. It makes EPDM suitable for use in exterior applications, roof covering, and plumbing.

Conclusion:

It is important that although FKM and EPDM are both forms of rubber they have their uses and are not interchangeable for each other. FKM is used where application conditions are severe demanding high temperature and chemical protection. On the other hand, we have That is why EPDM is recommended for outdoor and water applications.

Then, you will be able to deliberate based on their competencies and incompetence level. From use in applications where parts need to withstand high heat without degrading to needing protection from all forms of weather, choosing the appropriate rubber helps make your products more efficient and longer lasting.

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