· A Uniformly polished surface is often obtained with fewer deep scratches compared to grindstones with shaft. Ethylene Propylene Rubber (EPM) is actually a copolymer consisting of ethylene and propylene. The ethylene propylene polymer is chemically inert mainly because it consists of no double bonds. SBR commonly has superior abrasion https://beediadiamond.com/catalog/rubber-points
Not Known Factual Statements About rubber abrasive mounted points
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