Hard fabric is built up from layers of cotton fabric that are pressed together under high pressure with phenol resin. As a result the material obtains high compressive strength, is very wear resistant and also has self-lubricating properties. Hard fabric is used in machine construction, in the electrical industry, but also for gearwheels, wear strips or bearing materials. Special qualities contain PTFE, MoS₂ or graphite to reduce friction or consist of a fine or ultrafine fabric to enable fine mechanical processing. At an application temperature of up to +120°C hard fabric preserves its most important properties.