... -100 microns 3.Stainless steel,Copper, titanium 4.OEM Sintered SS Filter Cartridges1.Powder mesh sintering filters2.1-100 microns3.4 ... stainless steel powder metallurgy filters, sintered metal powder filters, muffler exhaust throttle BESLD, copper / stainless steel sintered ( filter, cartridge, filter tube ...