[ITEM SPECIFICATIONS] Firmness: Soft (5 - 8 psi), Cell Type: Open Cell, Color: Black, Texture: Textured, Material: Natural Sponge, Backing: Acrylic Adhesive, Thickness: 1/8", Width: 3/4", Length: 10 ft.. [PERFORMANCE] Natural sponge exhibits excellent abrasion resistance. [TECHNICAL ATTRIBUTES] Compression Deflection: 8 psi, Density: 26 lbs / cu. ft., Temperature Range: -20°F to 160°F, Specifications Met: ASTM D1056 1A2, MILC-3133, MIL-STD-670. [VARIOUS APPLIANCES] Natural sponge is often used in applications with repetitive sealing.