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The high-voltage bushing (1) has a conductor (2) and a core (3) surrounding the conductor (2), wherein the core (3) comprises a sheet-like spacer(4), which spacer (4) is impregnated with an electrically insulating matrix material (6). It is characterized in that the spacer (4) has a multitude of holes (9) that are tillable with the matrix material (6). Preferably, the spacer (4) is net-shaped or meshed. It can be a net of fibers. The bushing (1) can be a fine-graded bushing (1) with equalizing plates (5) within the core. As a matrix material (6), a particle-filled resin (6) can be used. (Fig. 1)