Full definition
Expanded polychloroprene (CR) foam with interconnected (open) cell structure, allowing air and moisture to pass through the material. Softer and more compressible than closed-cell foam at equivalent density. Per ASTM D1056 classification: 2D1 (medium) or 2D2 (soft). Density: 100-400 kg/m³. Compression deflection: very low force required — conforms easily to irregular surfaces. Properties: good weather and ozone resistance (inherent CR property), moderate oil resistance, flame retardancy (self-extinguishing), and excellent cushioning/shock absorption. Applications: acoustic insulation panels (sound absorption — open cells trap and dissipate sound energy), cushioning pads (equipment protection, packaging), filtration media (coarse particle filtration), cosmetic sponges, wet-application cleaning pads, and padding for protective equipment. Compared to closed-cell neoprene foam: open-cell is softer, more breathable, less waterproof, more compressible, and better for sound absorption. Thicknesses: 3-50 mm. Available as sheets, die-cut pieces, and adhesive-backed strips. Limitation: not suitable for waterproof sealing (use closed-cell for that). Brands: Rubatex, Armacell, Den-Wal.