uxcell 7mm Solid Round Clear Glass Ball Boiling Stones Soda Lime Glass Beads 200pcs

Specifications:Ball Diameter: 7mmPrecision Grade: G1000Material: Soda Lime GlassPackage Contents:200 x Glass BallsDescriptions:There are two kinds of commonly used materials for making glass balls: Soda Lime Glass & Borosilicate Glass.Soda-lime glass is known as chemically inert. It is resistant to alkaline solutions. The balls made of soda-lime glass have good electric and corrosion-resistant properties but can not bear the thermal shock. The melting point is about 700C.Borosilicate glass is highly chemical and heat resistant. Borosilicate glass balls are dimension stable with a melting point of about 800C.Glass balls are especially useful for check valves, visual flow equipment, low-speed bearings, and many labs and experimental applications.Notice: Please confirm the Ball Diameter you are ordering.

• Size - 7mm Diameter. The package includes 200 pieces of balls
• Material - Made of soda-lime glass, which has good resistance to solvent and high-temp.
• Features - Solid round with polished smooth surface. The diameter tolerance is about +/-0.02mm. Softening Point: 726C / 1340F
• Applications - Glass balls are especially useful for model paint mixing, grinding and sanding, or use as lab boiling stones.
• Notice - Confirm the Ball Diameter before ordering.