Rubber gaskets are essential in many industries, playing a crucial role in sealing various applications from moisture, dust, and other contaminants. Ethylene Propylene Diene Monomer (EPDM) gaskets have become increasingly popular among the different rubber gaskets available. This is primarily due to their remarkable endurance and ability to resist weathering, ozone, and UV exposure.
EPDM rubber gaskets boast several advantages over other types, such as excellent flexibility, low compression set, and good chemical resistance. This makes them suitable for demanding environments and widely used in various applications, including automotive, construction, HVAC, and aerospace.
Several factors must be considered when selecting and using EPDM gaskets for particular applications to ensure optimal performance and longevity. Here are some of the key considerations that one should keep in mind while working with these types of rubber gaskets:
1. Material Properties
The durometer or hardness of EPDM gaskets is essential when selecting the appropriate product for your application. A softer gasket can conform to irregular surfaces and provide a better seal. Conversely, a harder rubber gasket can resist deformation and maintain a reliable seal under pressure.
Another important property to consider is the compression set. EPDM has a low compression set, which allows the gaskets to maintain their original shape and form, providing a reliable and consistent seal. This is paramount for sealing applications requiring long-lasting seals, such as automotive or construction industries.
2. Temperature Range
EPDM gaskets are well-suited for use in environments with extreme temperatures because they resist such conditions remarkably. Their capacity to withstand temperatures from -50 to 150 °C enables them to be used in various industries. However, it is worth noting that the temperature range that a specific EPDM gasket can tolerate depends on its formulation and application.
3. Chemical Compatibility
When selecting an EPDM gasket, it is crucial to consider the compatibility of the material with the chemical it will come into contact with. Although they are known for their excellent chemical resistance, exposure to certain substances can cause the rubber to degrade or break down. This can lead to failure in the product’s sealing capabilities. Examples of chemicals they may not be compatible with include petroleum-based oils and fuels, aromatic solvents, and certain halogenated hydrocarbons.
4. Pressure Rating
The pressure rating is the maximum pressure the gasket can withstand without deforming or failing. This can vary depending on the size and shape of the rubber and its intended application. As for EPDM, they are available in a range of pressure ratings, from low-pressure to high-pressure applications. Hence, selecting a type with a pressure rating exceeding the maximum pressure of exposure is crucial.
5. Surface Preparation
Before installing an EPDM gasket, it is essential to ensure that the surfaces that the gasket will be in contact with are clean and free from any contaminants. This is because contaminants — such as dust, dirt, and grease — can prevent the gasket from forming an effective seal, leading to leaks and other issues.
Surface preparation requires a thorough cleaning using an appropriate product or solution. This solution will depend on the type of surface and the nature of the contaminants present. For example, a solvent-based cleaner may be suitable for removing oil from metal surfaces, while a mild soap solution is appropriate for cleaning plastic surfaces.
Choose Custom Gasket Manufacturing for High-Quality EPDM Rubber Gaskets
At Custom Gasket Manufacturing, we pride ourselves on delivering precision die-cut and molded EPDM rubber gaskets and seals to applications and industries worldwide! Our commitment to excellence is demonstrated by consistently delivering high-quality products that meet the most stringent standards. We strive to meet your blueprint specifications and exact tolerance requirements.