rubber
Isaac Kremer/ January 14, 2018/ / 0 comments
Rubbed brick, brick rubber, cutter, or malm is a soft brick made of special well-mixed fine loamy clay containing a lot of sand and baked (not burnt) in a kiln, readily sawn and rubbed to the required shape. It is used for making gauged brick arches, etc., the extremely fine joints between the rubbers being formed of lime-putty rather than conventional mortar, which would be too coarse. 2. A material made by chemically treating and toughening natural rubber, valued for its elasticity, nonconduction of electricity, and resistance to shock and moisture. (Curl & Wilson, 2016)