Approximate durometer hardness comparisons the values listed are approximate and are not to be used as an exact equivalent.
Rubber durometer scale.
The shore durometer is a device for measuring the hardness of a material typically of polymers elastomers and rubbers.
Hardness is an important consideration in sealing materials.
A durometer scale also called a shore hardness scale and rubber hardness scale was created so people can have a point of reference to compare different materials such as soft rubbers rigid plastics gels and other non metallic materials.
When selecting rubber sheet there are various thicknesses and lengths but also varying hardnesses.
Higher numbers on the scale indicate a greater resistance to indentation and thus harder materials.
Measure the hardness of flat materials such as plastic rubber and laminate.
Durometer measures the hardness in polymers elastomers and rubbers.
Shore who developed a measurement device called a durometer in the 1920s.
As time progressed multiple durometer scales were created.
The shore durometer scales that are most commonly used in plastics rubber and silicone are the a d and 00 shore scales.
Thus if you need a rubber or o ring durometer that feels like a running shoe sole review our rubber hardness chart below then pick shore 70a.
The durometer scale was defined by albert f.
Remember that the higher the rating the harder and less pliable the rubber material will be compared to elastomers with a lower durometer rating.
Hardness may be defined as a material s resistance to permanent indentation.
Rubber band 30 shore a inner tube 55 shore a rubber tire 65 shore a rubber shoe heel 70.
The shore durometer scale was created by albert f.
The rubber durometer chart below gives you an idea of the rubber hardness that you want for your application.
Here are a few examples of hardness based on durometer scale.
A chart showing general hardness comparisons is below.
For example you would not choose a rubber with a durometer of 70a to make a mold of a plaster standing.
Lower numbers indicate less resistance and softer materials.
Style 2 testers have a narrow base for access to confined areas.
Shore durometer is a scale used industry wide to measure the hardness of rubber and plastic materials.
Generally most rubber materials fall under the rubber durometer scale of shore a.
Understanding shore s durometer hardness scale can create a world of difference when picking out material as the ratings will always tell you how hard flexible and resilient each rubber is.
This information is provided as a selection guide only.
There are different shore hardness scales for measuring the hardness of different materials.
Originally the result was just signified by a number for example 50 durometer.
They can be held in your hand or mounted to a stand with the included knob.
Durometer shore hardness scale.
Shore in the 1920 s.
