Posted on September 8, 2017February 26, 2018 by superuserLumiglas Sight Glass Disc, circular DIN 8902 Lumiglas Sight Glass Disc, circular DIN 8902 Toughened Soda Lime For pressure duties at temperatures up to 150°C, no low temp limit Ground and polished Downloads Data sheet (Download as PDF) Important guidelines (Download as PDF)