How to Spot the Best EPDM Gasket


A gasket offers protection of equipment from harsh environmental effects such as dirt, heat, rain and ice by creating a positive seal between two originally unattached surfaces. To function properly, a gasket must be able to perform different jobs.

Primary Functions of Gaskets

Its primary function is to seal the space between two surfaces to prevent leaks of oil, fluids or gas and contamination of dirt. This is referred to as the gasket’s Ingress Protection (IP) rating.

Another purpose of a gasket is to fill irregularities between attached parts that are not perfectly fitted with each other, thereby presenting a tighter fit.

Different Gasket Types

The degree of protection that gaskets provide depend to a large extent on the materials used in creating gaskets. Some of the most common materials used in manufacturing gaskets include neoprene, silicone, urethane and ethylene propylene diene monomer or EPDM.

Each type of gasket has its own strengths and weaknesses against different environmental conditions and chemicals to which they are exposed to. For instance, polyurethane is considered a good general-purpose material for gaskets because it has a significantly low compression set while an EPDM gasket works best in protecting against the most common industrial chemicals.

IP Rating on Physical and Chemical Properties

The IP rating of a gasket depends on the properties of the gasket, which in turn are determined largely by the materials used in creating the gasket. In terms of physical properties and chemical comparison, EPDM gaskets perform well for its purpose.

Qualities of the Best EPDM Gasket

EPDM gasket is made from synthetic elastomer rubber that delivers exceptional performance. Because of its outstanding qualities, EPDM gaskets have far-ranging applications, including appliance hose, belts, electrical insulation, washers, radiators, speakers and roofing membrane.

Based on tests and actual use of the product, it has been found to have the following desirable traits:

  • Wide temperature range. It maintains stability at high temperatures and cold climate. Its remains effective through temperature range of -50°C to 150°C.
  • Water proof. It is unaffected by cold and hot water.
  • Resistant. EPDM is resistant to ageing, oxidation, ultraviolet light, ozone, ordinary diluted acids and alkalis.
  • Color-Stable. It does not stain PVC window frames.
  • Good Fit. Low compression set and good fit on the assembly. Compression set refers to the resulting deformation of a gasket after the application of force and its removal.

Choosing the Best EPDM Gasket

If you are looking for an EPDM gasket, bear in mind the desirable qualities mentioned above. The best EPDM gasket should have all these qualities and more. It must possess both physical and chemical resistance as well as the ideal compression set.