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Immersion Grade Coating

Last updated: July 13, 2017

What Does Immersion Grade Coating Mean?

An immersion grade coating is a protective layer that is applied to a material that will be subjected to water or another liquid for an extended period of time. An immersion grade coating is better suited than other types of coatings for long exposure to an aqueous solution because they provide excellent sealing properties.


Corrosionpedia Explains Immersion Grade Coating

An immersion grade coating is typically an epoxy type of coating. The epoxy provides a close-packed, superbly sealed coating that prevents water or other liquids from working their way through to the base material. If an immersion grade coating is not used, then water or other liquid permeability can be a concern.

Immersion grade coatings are used in a variety of applications. Pumps are one application where immersion grade coatings are commonly used. Water treatment plants and water storage tanks also regularly use immersion grade coatings. Other examples include heat exchangers, pipelines and impellers.

Some immersion grade epoxy coatings are also used for bonding two or more materials together.


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