The FST filter elements reinforce and support the glass fibre filter media with wire gauze. The filters block and clog long before any degradation of the filter media occurs. A number of filters have been reused and tested a number of times without any observed degradation of the fibres. The filters when used in the USA mines are subjected to exhaust pressures of up to 14.95kPa (60” H2O) in Australia the maximum back pressures currently allowable are 10kPa
Glass fibre has been commercially manufactured and marketed for more than 60 years. During this time, it has become one of the world’s most useful and beneficial man-made materials.
FST filter media is manufactured from continuous filament glass fiber which is produced in long, continuous strands or filaments.
The predominant glass composition for continuous filament glass fibre is known as E-glass. It accounts for almost all the world’s production of these glass fibres.