Advantages of Closed Cell Foam
Closed cell foam is composed of cells that are sealed off to air, preventing most gases and liquids from permeating the material. This structure creates a more rigid material that withstands more compression force than typical open cell foams. These properties make it an ideal choice as a gap-fill material as well as a seal material, if the material selection plan suits the complete environmental situation. Like its open cell counterpart, closed cell foam is available in a variety of thicknesses.
Closed Cell Foam for Gap-Fill
Under compression between two mating component parts, closed cell foam fills the distance between the two mating parts without allowing air or water to pass through the foam. The compression force against the closed cell foam is distributed across the foam surfaces, sealing the area where the foam meets the mating part. The surfaces and the exposed edges of the foam are unable to be penetrated, retaining the liquid or gas in the desired location. This makes it ideal for sensitive parts that may be harmed by changes to calibration or exposure to the elements.
Closed Cell Foam for Withstanding Compression
Due to its rigid structure, closed cell foam is also appropriate for many seals that must withstand various loads. Its structure allows it to compress just enough to provide a seal while maintaining its strength to withstand varying forces. A common end application for closed cell foam includes bolted flange joints on plastic containers, vessels and sheet metal housings.
While closed cell foam has many end applications, PGC most often uses the material for its gap-fill and compression properties. To learn if one of the many members of the closed cell foam family may be the right material for your application, contact the PGC team today.