Rubber slab; rubber sheet - A rubber-based material (which may include fabrics, thin metal plates, etc. for reinforcement) that is vulcanized to produce a flat product with a certain thickness and large area, commonly referred to as rubber board. Rubber slabs have high hardness and general physical and mechanical properties, and can operate in air at temperatures of 20° to +140℃ under low pressure. They are made by calendering and bonding compounded rubber or extrusion molding, then vulcanized using a flat press or a drum vulcanizer for continuous vulcanization. Colors include black, gray, green, blue, etc. They are widely used in industrial and mining enterprises, transportation departments, and flooring for buildings. They serve as sealing gaskets, rubber pads, door and window seals, and for laying workbenches and floors.