The flexible foamed adhesives described above can also be used as a sealant and provide a barrier to the passage of liquids, air, or other substances. These type of products are finding application in the building and construction industries for providing seals against drafts, moisture, and other environmental elements that can harm a building structure. The advantage of these sealants over conventional products is their large gap filling ability. For example, a urethane foam can be applied out of a can like whipped cream. Once the sealant reaches a surface, it expands to two or three times its original volume, filling nearby space as it sets to a flexible or semi-rigid form. In addition to use in the building and construction industry, typical applications include filling and sealing gaps in cars, trucks, and trailers, and as a vibration dampening mount for electrical equipment.
However, a more common application of an elastomeric foam adhesive is as a gasket.Preformed foam gaskets are compression type seals and require compression of up to 25% to form a positive seal.