Silicone foam is a low-density, closed-cell foam rubber that is resistant to chemicals and electrical charging. It is used in thermal insulation, gaskets, and seals, and is available in various forms. It is also flame retardant and can be used in commercial and domestic construction. Another type of silicone foam is a liquid substance that expands to seal cracks and voids.
Silicone foam is a low density synthesized foam rubber that has a predominantly closed cell structure with a low water absorption surface skin. Most consumers would recognize this material in the form of the dark gray foam pipe insulators available at most home improvement stores. This silicone foam is resistant to chemicals, electrical charging and is suitable for use in high and low temperatures ranging from -60 degrees F to 500 degrees F (-50 to 260 C). Silicone foam has a high level of overall compressibility and low compression over a wide temperature range, meaning it can maintain its viability in the hottest or coldest conditions. This type of foam is typically used in thermal insulation as building materials or gaskets.
Silicone foam is manufactured in many forms including sheet, rope, tube, and custom varieties. Made from liquid silicone that is placed into a mold or liner and cured in a high temperature oven, the silicone is made into various forms of low and high density open cell foam. This low density foam is useful in manufacturing electrical insulation, thermal insulation, gaskets and seals. The chemical composition of this foam provides excellent flame retardant, sound insulating and temperature resistant properties.
Some types of silicone foam can be extruded onto other types of silicone tubing, pressure hoses, or fiberglass sheathing. The flame retardant varieties of silicone foam used in the automotive, aviation, mass transit, furniture, and electronics industries are flame retardant. Fireproof foam as thin as 3/8 inch (0.95 cm) can withstand flames and a temperature of 2,100 degrees F (1,150 C) for up to 10 minutes without burning. Combined with its excellent thermal insulation qualities, silicone foam makes it the perfect choice for aircraft, cars, buses or any other type of vehicle used to transport people and protect them from the elements.
For use in commercial or domestic construction and furnishings, silicone foam is a fire retardant, insulating material that is super lightweight and easy to handle. This flame retardant insulation foam can be laminated to the underside of carpets, wall coverings, doors and fire and fire barriers to add an extra measure of protection against the dangers of fire, smoke, noxious fumes, vapors and water. To seal and protect surrounding materials from the potentially high heat of interior lighting and other electronic components, silicone foam can provide superior thermal insulation.
Another type of silicone foam is manufactured as a thick liquid-type substance that can be applied into cracks, voids, holes, and crevices where fire or smoke could penetrate and cause damage. Once applied, this foam expands to several times its original mass and effectively produces a seal that is impervious to smoke, fire and water penetration. This low density foam is useful in the manufacture of electrical insulation, thermal insulation, gaskets and seals that must remain viable through the shrinkage and expansion cycles associated with rapidly changing temperatures.
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