Plastic Balls
Hartford Technologies manufactures industrial plastic balls commonly used in FDA-approved applications including polypropylene, acetal, nylon, Teflon, and polyethylene, plus custom colored options for identification applications across medical, consumer goods, health and beauty, and flow control uses
Grades
Below are the Grade Charts for plastic balls showing inches and metric sizes
| Inch Grade | Sphericity | Diameter |
|---|---|---|
| 0 | 0.00025 | +/- 0.0005 |
| I | 0.0005 | +/- 0.001 |
| II | 0.001 | +/- 0.002 |
| III | 0.005 | +/- 0.005 |
| IV | N/A | +/- 0.015 |
| Metric Grade | Sphericity | Diameter |
|---|---|---|
| 0 | 0.0063 | +/- 0.0127 |
| I | 0.0127 | +/- 0.0254 |
| II | 0.025 | +/- 0.050 |
| III | 0.127 | +/- 0.127 |
| IV | N/A | +/- 0.381 |
Type of Balls We Manufacture with Plastic Balls
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Polypropylene (PP)
Chemical resistance, low-density, electrical insulation
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Acetal (Delrin/Celcon)
Pumps, valves, slides, low friction rolling
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Nylon (Polyamide)
Hot, humid, chemically aggressive environments
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Teflon (PTFE)
Extreme chemical resistance, highest temp rating
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Polyethylene (PE)
Pharmaceutical, medical, electronic, liquid control
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Colored Plastic Balls
Color-coded identification, HBA, consumer goods
Compare Plastic Ball Types
| Type | Chemical resistance | Hardness (Rockwell) | Max temp | Natural lubricity | FDA approved | Specific gravity |
|---|---|---|---|---|---|---|
| Polypropylene (PP) | Excellent | R80-102 | Not specified | No | Yes | 0.90 (lightest) |
| Acetal (Delrin / Celcon) | Good | R119-122 (hardest) | Not specified | Yes | FDA / USDA / UL | 1.41-1.42 |
| Nylon (Polyamide) | Good | R119 | 300°F | Yes | Yes | 1.12-1.14 |
| Teflon (PTFE) | Best | R58 (softest) | 550°F (highest) | Yes | Yes | Not specified |
| Polyethylene (PE) | Good | R85-100 | Not specified | No | Yes | Not specified |
| Colored Plastic Balls | Varies by base material | Varies by base material | Varies by base material | Varies by base material | Varies by base material | Varies by base material |
Sizes, Grades and Tolerances
| Material | Smallest Standard Size | Smallest Standard Size | Largest Standard Size | Largest Standard Size | Best Standard Grade | Least Standard Grade | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Plastic | |||||||||||
| Acetal (Delrin and Celcon) | 1.5mm | 1/16″ | 50.8mm | 2″ | G0 | G3 | |||||
| Nylon | 1.5mm | 1/16″ | 50.8mm | 2″ | G0 | G3 | |||||
| Polyethylene | 1.5mm | 1/16″ | 50.8mm | 2″ | G0 | G3 | |||||
| Polypropylene | 1.5mm | 1/16″ | 50.8mm | 2″ | G0 | G3 | |||||
| PTFE (Teflon) | 1.5mm | 1/16″ | 50.8mm | 2″ | G0 | G3 | |||||
Why Choose Hartford Technologies for Plastic Balls
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100+ years of precision supply
Trusted by OEMs in Aerospace, Medical, Automotive, and Industrial markets since 1926
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In-stock and ready to ship
Standard sizes available for immediate shipment. $400 minimum order for stock items.
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Custom Engineered Solutions
Complex assemblies and non-standard sizes are quoted individually
Industries We Serve with Plastic Balls
Hartford Technologies plastic balls are specified across low-load, flow control, and consumer product applications where corrosion resistance, lightweight performance, and natural lubricity are the primary requirements.
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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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Chemical Processing
Highly corrosive environments, acid and caustic media, no known chemical attack applications
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Electronics
Electrical insulation, low dielectric constant applications, precision assemblies
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Consumer Goods
Ball floats, consumer product components, color-coded applications, identification uses
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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 and Minimum Order Value
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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.
