Mica Shields are widely used in visual liquid level gages to protect the glass surface from the corrosive effects of hot alkaline or acidic solutions. Mica is commonly used in steam water applications to prevent etching and the weakening of the glass.

Mica Selection: The quality of mica used in visual liquid level applications continues to be determined by visual examination where the suitability is assessed on the basis of appearance. In this process of quality evaluation undue emphasis is placed on clarity, color, flatness, hardness, stains, visible inclusions and structural imperfections. The most common Mica grades used in liquid level gage applications are V1, V2 and V4.

• V1 Green or Ruby (Clear) (Available Upon Request)
• V2 Green or Ruby (Slightly Stained) (Available Upon Request)
• V4 Green or Ruby (Stained)
• Mica Data Sheet.pdf