... Long service life 3.Matrial:Polyester 100% staple filter fabric 5.Thickness:2mm 6.Weight: 245gsm 7. ... chemical industrial ,for tell equipments of frame filter presses ,centrifuge filters ,vacuum filters,vacuum filters ,etc .the filters precision can ... less than 1 micron Application:For filter press,leaf filter,disc filter,drum filter or vacuum filter in chemical industry,pharmaceutical industry, ...