As its name suggests, this plastic washer plays an insulating role. This insulating washer helps prevent fasteners and screws from loosening by absorbing shocks. It is available in natural nylon and can be offered on request in PE and PP.
Its shape is an asset. Thanks to its 90 ° conical shape it serves as an insulator for the screw
They are mainly used with countersunk metal, stainless steel, brass and other screws.