FLEXIBLE SHEET MATERIAL

摘要

Non-asbestos flexible sheet material suitable for use in gaskets for the exhaust manifold of an internal combustion engine is made by dewatering on a water-permeable conveyor a layer of aqueous slurry and compressing and drying the dewatered layer, the aqueous slurry employed being one that contains the following ingredients in the following proportions by dry weight: ball clay: 25-44% non-fibrous layer silicate: 25-40% graphite: 10-30% cellulose fibres: 3-15% synthetic rubber: 1-10% starch: 1-5%.