Foam Types - Definitions, Qualities and Common Uses

Closed Cell Foam Description:

Closed Cell foam, also known as Polyethylene foam, is an excellent quality type of foam in which the individual foam cells are sealed off from one another, preventing the passage of air and water through the material and making it impermeable. The closed-cell structure results in a foam that is rigid and buoyant. Non-water absorbant, it is ideal for applications where flotation and water resistance are essential. It is commonly used in water sports equipment, marine flotation devices, and buoyancy aids. It also provides excellent thermal insulation and is often used for hot tub covers.

Closed Cell foam is often used in applications where insulation against heat or cold is necessary, such as in building insulation, refrigeration, or HVAC systems. Closed Cell foam tends to be more durable and resistant to wear and tear than open-cell foam. The closed structure enhances the foam’s strength and ability to withstand compression and impact. The impermeability of Closed Cell foam makes it effective for sealing applications. It is often used as gaskets and seals in industries where preventing the passage of air or water is critical. Closed Cell foam can be used for acoustic insulation in applications where sound absorption and dampening are required. It is often found in automotive interiors, industrial settings, and soundproofing applications. Its typical lifespan is around 15 years.

Closed Cell Foam Technical Data

Property Values Test Method Density (LB/Cubic Ft.) 2.0 ASTM D 3575 Compression Strength (PSI): 25% / 50%) 5 / 14 ASTM D 3575 Tensile (PSI) 60 ASTM D 3575 Elongation (%) 124 ASTM D 3575 Tear (LB/Inch) 11 ASTM D 3575 Compresion Set (%) 28 ASTM D 3575 Shore Hardness: A Scale / OO Scale 7 / 51 ASTM D 3575 Thermal Stability (%) Max.3 Hours @ 180°F -1.0 ASTM D 3575 Thermal Conductivity @ 50°F 0.33 ASTM D 3575 Water Absorption (LB/Sq. Ft.) 0.04 MIL-P-40619 Bouyancy (LB/Cubic Ft.) 55 MIL-P-40619 Contains Fire Retardant Additives No -