Rubber Hardness Measurement

The irhd m measurement is particularly common for measurements on o rings.

Rubber hardness measurement.

The hardness has a direct impact on the stiffness of a part ultimately affecting how a component will perform in an application. This comparison guide will provide an overview of the different scales that can be used. But if the hardness is 10 sh or 90 sh the results are not to be trusted. Thus if you need a rubber or o ring durometer that feels like a running shoe.

To evaluate elastomers quality vulcanisation ratio or even the wear resistance it is necessary to check the hardness. There are special tools to position the measuring needle exactly in the middle. What shore hardness means to you as a mold maker. Once the gauge is pressed firmly against the material and the needle has penetrated as far as it can go the measurement needle will indicate the corresponding hardness measurement.

As such an incorrect way to take a measurement of hardness would be if the base of the durometer or the base of the tool was actually not parallel to the axis of the roll or the shaft that s holding the roll. So i sent him photographs that showed different ways of holding a durometer and using it to measure the hardness of a rubber roll. The rubber durometer chart below gives you an idea of the rubber hardness that you want for your application. A durometer scale is a type of measurement for rubber material hardness.

Shore durometer hardness is a measure of the resistance a material has to indentation. Determining the shore a hardness of rubber. Measuring by pressing manually onto a rubber part in order to feel its resistance can seam. Durometer is a dimensionless quantity and there is no simple relationship between a material s durometer in one scale and its durometer in any other scale or by any other hardness test.

This measurement follows the. Generally most rubber materials fall under the rubber durometer scale of shore a. High quality foam rubber hardness shore durometer measurement 2 5 mm needle stroke dial from china china s leading digital rubber hardness tester product with strict quality control durometer hardness unit factories producing high quality durometer hardness unit products. Otherwise deviations can easily occur on a convex surface.

The most commonly used method is the shore a measurement. The needle is placed against the rubber or plastic and pressure is applied.