ePTFE-BIAX – GASKET SHEETS
MATERIAL PROPERTIES
ePTFE-BIAX – GASKET SHEETS consist of virginal, expanded PTFE. By the manufacturing process, a multidirectional fibrous texture is produced which gives the gasket sheets their very special properties. The materials especially show very low compression rates and low increase in width even under extreme conditions. Because of its multidirectional fibrous texture, ePTFE-BIAX – GASKET SHEETS show very good material characteristics at high surface pressures and increasing temperatures. Even under extreme operating conditions there are very low changes in width and in height, compared to other PTFE materials. By using gaskets made of ePTFE-BIAX – SHEETS high surface pressures will be maintained also at high temperatures. ePTFE-BIAX – GASKET SHEETS is especially designed for highest safety requirements and for the application in critical joints such as flanges in oxygen pipelines. For various applications the ePTFE-BIAX – GASKET SHEETS are available in diverse dimensions, heights and densities.
EXAMPLES OF APPLICATION
- GASKET FORMS – e.g. cut and punched gaskets, with complex geometries, with precise dimension, for series production, also for complete surface sealing, for in-situ-cutting of gaskets
- COMPONENTS – e.g. pipeline flanges, pump- and stirring machine flanges, apparatus, heat exchangers
- FLANGE MATERIALS – e.g. FRP, enamel, glass, ceramics, graphite, aluminium, steel, rubber coated materials
1500 x 1500 mm
- MATERIAL – pure virginal PTFE, with expanded multidirectional fibrous texture
- CHEMICAL RESISTANCE – pH 0 to 14 resistant to all media, with the exception from solved and melted alkaline metals, as well as elementary fluorine at T>150°C and p>40 bar ( T>300°F and p>580 psi)
- RESISTANCE TO AGEING – in the permissible area of application there is no ageing of ePTFE-BIAX –
- GASKET SHEETS TEMPERATURE RANGE – -240°C to +270°C, intermittent to +315°C (-400°F to +518°F, intermittent to +600°F)
- PHYSIOLOGICALLY HARMLESS – under continuous temperatures up to +260°C (500°F), in accordance with German BG No. 21 requirements according to FDA 21 are met.
- PRESSURE RANGE – the pressure range depends on installation- and working parameters
- SPECIFIC MATERIAL CHARACTERISTICS – values according to DIN 28090 / DIN 28091–T3: KSW = 23% … WSW = 11% nominaly density: 0,7 g/cm3
- TA – Luft (VDI 2440), FDA 21 CFR 177.1550 (PTFE)