The Shore durometer is a device for measuring the hardness of a material, typically of rubbers, polymers & elastomers. Lower numbers indicate less resistance (softer materials) and higher numbers indicate a greater resistance to indentation (harder materials).
The Shore A Hardness Scale measures the hardness of flexible mold rubbers that range in hardness from very soft and flexible to hard with almost no flexibility at all. The Shore D Hardness Scale measures the hardness of hard rubbers, semi-rigid plastics and hard plastics.
|Bicycle gel seat||15–30||OO|
|Automotive tire tread||70||A|
|Soft wheels of roller skates and skateboard||78||A|
|Hard wheels of roller skates and skateboard||98||A|
|Solid truck tires||50||D|
|Hard hat (typically HDPE)||75||D|
|Cast urethane plastic||80||D|
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