How to find the right Plastic Spheres AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Plastic Spheres
- Ball grade
- For bearings, valves and check balls, buy by ABMA ball grade, where a lower grade number means tighter sphericity and diameter tolerance Ungraded 'plastic balls' are not round or consistent enough to seal or roll smoothly.
- Polymer
- Acetal for low-friction rolling, PTFE for chemical service, nylon for toughness, polypropylene for floats and light duty Chemical resistance and wear vary widely between polymers.
- Solid versus hollow
- Hollow spheres for floats and level indicators; solid for any load-bearing or sealing use Hollow balls collapse or deform under load.
- Fluid compatibility
- Check the polymer against the actual fluid and temperature before using in a valve or pump Swelling changes the diameter and the ball will stick or leak.
What to avoid
- Ungraded decorative balls used as check or bearing balls
- Nylon balls in water service where dimensions must hold