How to distinguish PVC caster wheel and PU caster wheel

1.Compare with PVC wheel, PU wheel are softer,have better quality and toughness,can withstand large force
2.PU material are more expensive than PVC
3.PVC wheel can tearing by force and PU wheel can not
4.After burning PU caster will have relatively light smell ,but the PVC wheel will become black and have foul smell
5.PU wheel have higher specific weight than PVC wheel

Because of above difference,PVC wheel are usually us light weight furniture caster wheel,And PU wheel are most used as heavy duty industrial caster.

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