How to Evaluate Natural Rubber Lining Compounds for Abrasion Resistance

Jeff Fuller – June 2023

Abstract:

Elemental properties of rubber compounds as provided by the rubber manufacturer do not always translate to wear resistance properties. Be sure to check the wear resistant properties of the rubber compounds before making a choice.

Elaboration:

There are many factors to first consider when choosing a rubber compound, including the size and sharpness of the material, the velocity and angle of attack, etc.

Once this is done, you must then decide between competitive rubber compounds for the best cost of life purchasing decision. Typically, this is done by evaluating the specification sheets provided by the rubber manufacturer. These sheets provide elemental properties of the rubber such as the hardness, the elongation, the tensile, and specific gravity. While these are important, they are only elemental physical properties. The properties that will give you the best indication of wear are wet abrasion, dry abrasion cut and chip resistance, mass loss, water absorption and tear. These properties are NOT typically listed on a rubber manufacturers specification sheet.

Below, you will find the sheet comparing the performance properties of various rubber lining compounds of the most common abrasion rubber used in mining applications, commonly known as pure gum rubber or natural rubber. On close inspection of this comparison, you will notice that the elemental properties do not, on their own, correlate directly to the abrasion resistance of the material.

This comparison only lists the abrasion resistance and cut resistance of the material. The next step is to look at the cost per square foot or the installed cost of the material versus the expected life that you will get using these elements. Considering these factors combined, you will be able to choose the best cost of life product for your application.

Even after all the laboratory tests, the proof will be when you install a rubber compound and test it in a circuit or a line where you know the typical life. This will tell you how long the material will last, versus a material that you have tried in the past.

For more information, please submit an inquiry to Fuller Industrial . One of our rubber experts will be pleased to discuss at any level of detail on the subject with you.