GRACE FILTER MFG are specializing in production of filter needle felt and filter bag processing, design and manufacturing dust collecting system in China. GRACE'S PTFE SERIES FILTER NEEDLE FELTPTFE NEEDLE PUNCHED FELTConstruction: PTFE fiber/glass fiberFiber Composition: Scirm Composition: PTFE ScrimFelt Area Weight: 650 g/m2Thickness: 1.4 mmDensity: 0.42 g/cm2Mean Air Permeability: 10 m3/***** H2O Breaking Strength-MD: 800 N/5cmBreaking Strength-CMD: 1000 N/5cmBreaking Elongation(N/5cm)-MD 12 %Breaking Elongation(N/5cm)-CMD 12 %Dry Shrinkage MD (240 degree): <1%Dry Shrinkage CMD(240 degree): <1 %Operating TemperaturesRecommended Maximum Continuous 240 degreeRecommended Maximum Surge: 260 degreeFinishing: Calendered, PTFE Impregnated