A friction stir weld tool sleeve is supported by an underlying support pin. Such method is conducted in a reactor that is maintained at a pressure below one atmosphere for enhanced uniformity of gas flow and of MN product. The two handle parts are held in the closed position of the storage chamber by latching means movable out of a latching position by pressure on an actuating zone associated with an end side of the handle. All participants sign an agreement including predetermined transport conditions for the goods and a system manager monitors compliance using the data loggers. The invention also relates to a method for the production and use thereof as an impregnating varnish for electrotechnical components, particularly for electrical winding items. In another aspect, processes for manufacturing the previously described hockey stick blade are described.