Full definition
Watertight polychloroprene foam with sealed gas-filled cells providing a combination of waterproofing, thermal insulation, cushioning, and weather resistance in a single material. Densities: 80-350 kg/m³. Compression deflection at 25%: 15-150 kPa depending on density and grade. Thermal conductivity: 0.04-0.06 W/m·K. Temperature range: -40 to +105°C. Per ASTM D1056 Type 2A (closed-cell). Inherent properties from CR base: flame retardancy (self-extinguishing, oxygen index >26%), ozone resistance (no cracking in outdoor exposure), moderate oil resistance (suitable for incidental contact), and good aging stability. Applications: HVAC duct sealing tape and gaskets, automotive hood and trunk seals, construction joint weathersealing, marine equipment gaskets (IP65+ sealing), pipe insulation (condensation prevention), vibration isolation pads, and protective equipment padding. Available as: sheets (up to 50 mm), rolls, adhesive-backed tape (PSA on one or both sides for easy installation), die-cut gaskets, and custom-width strips. Closed-cell foam compresses 10-50% under moderate force and recovers, creating a dynamic seal. Brands: Rubatex, Den-Wal, Armacell.