Precision Ground Solid Balls:

Nylon or Delrin (Acetal):

These sink in water. Very Strong.

Polypropylene and Polyethylene

Both float in water. Very light.

Polyethylene is available in both lowdensity (suffix LDPE) and high-density (suffix HDPE).

Teflon

These sink but don’t absorb water.

Very heat and chemical resistant.

Acrylic

Crystal clear, highly polished. Invisible in water and they sink. Very pretty. Crystal cabochons (half-balls) available 1/4″ to 3″.

Tungsten Carbide

Very hard. Heavy metal group.

Standard sizes range from .031″ through 1.000″ and from 1mm through 5mm (not shown in chart below–please ask). Custom-made decimal sizes available.

Energy Saving Hollow Balls:

Save money, conserve energy, reduce air and noise pollution.

They’re not only environmentally sound, they pay for themselves up to 6 times over per year. They just pour onto the surface, covering 91% in a single layer. Balls move out of the way for dipping and float back into position automatically. One layer reduces heat loss by 75% and evaporation by 87%; with two layers, reduction is 81% and 90% respectively. Hollow ball blankets are successfully used in many applications: anodizing, food processing, metal processing and finishing, sewage treatment, gas scrubbing, temperature retardation and more.

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