20 Micron 90 mm Stainless Steel Wire Mesh Dutch Weave Filter Disc with Outside and Center Rim - China Extruder Screen, Plastic Extruder Screen | Made-in-China.com
AFD - Air Filter Disc KTM/HQV – MotoMinded
Sintered & Stainless Steel Filter Discs | Norman Filter Company
Filter Disc: The Ultimate Guide - Filson Filter
Amazon.com: Synthetic Filter Discs 90 mm, Wide Mouth Size, for a Buchner Funnel, Mushroom Cultivation, High Temperature and High Pressure Resistance (16 Pieces) : Industrial & Scientific