Full definition
Closed-cell neoprene foam, made from polychloroprene, is a versatile material characterized by its unique structure, which consists of sealed gas-filled cells. This design not only contributes to its watertight nature but also enhances its thermal insulation, cushioning, and weather resistance properties. The density of closed-cell neoprene foam ranges from 80 to 350 kg/m³, which allows for a broad spectrum of applications across various industries. The foam exhibits a compression deflection at 25% of 15 to 150 kPa, contingent upon the specific density and grade selected. Thermal conductivity values typically fall between 0.04 and 0.06 W/m·K, making it effective in preventing heat transfer in various settings, including HVAC systems and insulation applications.
The operational temperature range of closed-cell neoprene foam spans from -40 to +105°C, which ensures its usability in extreme environments. According to ASTM D1056 Type 2A, this foam type also offers exceptional properties such as flame retardancy, with a self-extinguishing capability and an oxygen index exceeding 26%. Additionally, it demonstrates remarkable resistance to ozone, which prevents cracking during outdoor exposure, and moderate oil resistance, making it suitable for incidental contact with oils. The material's good aging stability further enhances its longevity and performance in demanding applications.
Common applications for closed-cell neoprene foam include HVAC duct sealing tape and gaskets, automotive hood and trunk seals, construction joint weather sealing, marine equipment gaskets (with IP65+ sealing capabilities), pipe insulation to prevent condensation, vibration isolation pads, and protective equipment padding. It is available in various forms, such as sheets (up to 50 mm thick), rolls, adhesive-backed tape (with pressure-sensitive adhesive on one or both sides for easy application), die-cut gaskets, and custom-width strips. The compressibility of closed-cell foam ranges from 10% to 50% under moderate force, allowing it to create a dynamic seal that recovers its original shape when the force is removed.