Special Features:

36 x 36 inch sheet; physica requirements of type s, class sb-sponge, and expanded cellular rubber; class sb low volume swell in low aniline point 69.5 porm 1.0c oil; expanded, defined as elastomeric materials containing nonconnecting gas-tight cells, closed cells; compression-deflection at low temperature, 5 hrs at m55 porm 2c; class sb materials shall have low volume swell m25 to p10 pct in oils having an aniline point of 69.5 porm 1.0c; suffixes f1 and f2; physical requirements of type s, class sb-sponge, foam and expanded cellular rubber sbe11 compression deflection at 25 pct deflection 11 porm 2

Properties:

An elastic material of a cellular structure having smooth, crepe, or porous surface. It is produced in various thicknesses. Sheets are limited to widths greater than 6 inches (152.4 mm). It may or may not have a nonrubber backing.