GSM Beads: Molded Glass Beads for Grinding, Stirring, Mixing (large sizes)

Our molded glass beads are made from superior quality hardened soda lime glass.  You will see a fine line on the beads where the two halves are joined in with state of the art molding technology.  This process enables an exact forming of the beads especially with diameters over 4.0 mm.  These beads offer excellent roundness in sizes up to 25 mm.  They are shiny and smooth, with a low proportion of air bubbles, and a high degree of purity.  In size ranges from 1.5 to 16.0 mm, these glass beads are mainly used as stirring and mixing media in aerosol sprays.  Their high purity allows for excellent results when used in grinding and dispersing pigments, pharmaceuticals, cosmetics, argo-chemicals, pigments and dystuff.

These have similar uses to the GSR beads, but are available in larger size range and have a tighter tolerance than the GSR.

Please Contact Us For Pallet Pricing Here.

• Our Minimum Order For is a single 44lb bag per order.
• Packaging:  44 lb bags on a pallet, 50/pallet = one metric ton (2,200 lbs) per pallet is standard packaging.
• Applications:
  • Grinding
  • Grinding paints, pigments and chemicals, minerals, pharmaceuticals, Agro Chemicals, Inks, Dyes, Coatings, Cosmetics
  • Mechanical - Galvanized Plating (coating of small metallic pieces)
  • Valve closures in bottles, and stirring/mixing media for aerosol sprays
  • Decorative:  Vase filler, wallpaper, and in faux painting/plastering techniques. 
• Pricing Quotes:  Email us with your destination zip code, quantity, and size of glass bead.  We will work up a freight rate for you.

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Sizes Available:    

ART# Diameter /Tolerance

Chemical Composition:

• SiO₂ 66.70 Na₂O 14% CaO 7.59%
• Al₂O₃ 3.46% B₂O₃ 2.9%

Technical & Physical

• Specific Weight: 2.50 g/cc
• Bulk Weight: 3.30 lbs./ltr; 12.50 lbs./Gal.; 1.50 kg/ltr.
• Hardness: Mohs: 6.0; Rockwell 47RC; Knoop 100 gram
• Refractive Index: +1.52
• Elasticity module: 63 Gpa
• Sphericity: >95%
• Softening point 719^C;
• Annealing point 548^C;
• Transformation temperature linear expansion of coefficient (20-300^C) 10^-6K^-1