Washers have a round hole and are also called washers, for example. These washers are preferably used together with hexagon head screws, machine screws, nuts, threaded rods, self-locking nuts, spring washers and body washers, in Allen applications in steel and wood construction, as well as as protective elements for surfaces. The mechanical specifics of NBR include high abrasion resistance, good tensile and tear strength as well as low compression set. In terms of thermal properties, the elastomer is temperature-resistant between a maximum of -30 °C and +120 °C - depending on the specific composition and proportion of acrylonitrile. If the acrylonitrile content is low, the resistance to oils and fuels is reduced. The material is significantly more flexible at low temperatures. A high.
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