Acetal (Delrin & Celcon) Balls
Acetal balls offer predictable mechanical, chemical and electrical properties over a broad temperature range. Natural lubricity gives them a low coefficient of friction against metals. Most resins meet FDA, USDA and UL requirements. Used in pump, valve, slide and rolling applications. Also known as polyoxymethylene (POM) and polyacetal.
Chemistry
Specific Gravity: 1.41-1.42 gm/cc
Hardness: R119-122 (hardest plastic type)
Also known as: POM, Polyacetal
Brand names: Delrin (DuPont), Celcon (Hoechst Celanese)
Characteristics
Low coefficient of friction against metals. Excellent dimensional stability. Very low moisture absorption. Good fatigue and impact resistance. Natural lubricity. Meets FDA, USDA and UL requirements.
Corrosion Resistance
Good chemical resistance across a broad temperature range.
Typical Hardness
Rockwell R119-122. Hardest of all plastic ball types.
Ball Sizes
Available in sizes 1/16″ to 2.0″.
Available in grades 0 through IV (inch and metric). Finishes: matte, rough, polished.
Industries Using Acetal (Delrin & Celcon) Balls
Pumps and Valves (low friction valve seats, pump components), Industrial Sliding Applications (slide and rolling applications), Food and Beverage (FDA and USDA approved), Consumer Products (low-friction consumer applications)
All standard sizes available for immediate delivery
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Medical and Pharmaceutical
Valve applications, flow control, pharmaceutical processing, blood-contact identification components
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Health and Beauty
Roll-on applicators, dispensing equipment, cosmetic mixing, color-coded HBA components
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Pumps and Valves
Check valves, pump seats, flow control devices, slide and rolling applications
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Food and Beverage
FDA-approved applications, flow control, processing equipment, non-toxic contact surfaces
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Industrial and Manufacturing
Low-load bearings, liquid evaporation control, odor reduction, abrasion-resistant components
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.
