Meaning of SPONGE RUBBER in English

SPONGE RUBBER

noun

: porous or cellular rubber resembling a natural sponge in structure that is made usually by blowing with a gas (as carbon dioxide) liberated during vulcanization by a chemical (as sodium bicarbonate) incorporated in the rubber compound and that is used chiefly in making cushions, vibration dampeners, weather stripping, gaskets, insulation, and other molded products — compare foam rubber

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.