COSMO Plattenwärmetauscher 15-20 Platten Edelstahl 1.4404 mit Wärmedämmung G 3/4" : Amazon.de: Baumarkt
J.W. Winco 187.4-27-60-E-NI Serrated Locking Plate, GN187.4, 27 mm OD with 60 Teeth, Blank, Sintered Stainless Steel, European Standard No.1.4404 (American Standard Series 316): Amazon.com: Industrial & Scientific