Borosilicate Precision Glass Balls
Borosilicate glass balls withstand high thermal shock and can mechanically give continual service at 450°F with an extreme temperature limit of 900°F. Very high electrical resistivity and dielectric strength. High chemical stability. Recommended where high temperatures or sudden temperature changes are a factor.
Chemistry
Primary composition: Silica (SiO2), Boron Trioxide (B2O3)
Density: 2.2 gm/cm3
Continuous operating temperature: 450°F
Extreme temperature limit: 900°F
Characteristics
Non-magnetic. Zero porosity. Very high electrical resistivity and dielectric strength. High chemical stability. Withstands high thermal shock. Lighter than soda lime at 2.2 gm/cm3.
Corrosion Resistance
Very high chemical resistance. Superior to soda lime in chemically aggressive environments. Withstands high applied torque loads.
Typical Hardness
Continuous operating temperature: 450°F. Extreme temperature limit: 900°F.
Surface finish: Ground 20-30 RMS, Polished 10-20 RMS.
Ball Sizes
Available in sizes from 3/32″ to 1.5″ in ground, polished or matte grades. Available to 100,000 and 10,000 cleanroom standard.
Industries Using Borosilicate Precision Glass Balls
Chemical Processing (high chemical stability, acid and corrosive media), Electronics (very high electrical resistivity, dielectric components), Industrial Pumps and Valves (high-temperature valve and pump applications), Cleanroom Manufacturing (100,000 and 10,000 standard), Medical Devices (high-temperature sterilization environments)
Best for high-temperature and thermal shock environments
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Medical Devices
Valve applications, instrumentation, sterilizing equipment, blood-contact components
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Water Treatment
Bearings, pumps, valve seats, filtration equipment
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Instrumentation
Gauges, flow meters, measurement and calibration equipment
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Pumps and Valves
Valve seats, pump components, check valves, flow control
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Chemical Processing
High chemical stability, acid and corrosive media, high-temperature processing Borosilicate
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Electronics
High electrical resistivity applications, dielectric components, precision assemblies
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Cleanroom Manufacturing
Semiconductor, medical, and precision manufacturing to 100,000 or 10,000 cleanroom standard
Lead Times
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Standard in-stock components are available for immediate shipment. Lead times for non-stock and custom orders are determined based on specific part size, material, and required quantity.
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Hartford Technologies specializes in high-volume production runs and industrial applications. We have a $400 minimum order value for all standard in-stock bearing balls. For custom-engineered parts and assemblies, the minimum is determined by the complexity and volume of the specific requirement.
