Pharmaceutical syringe piston

A pharmaceutical piston stopper (2), comprising a base body (7′) made substantially from an elastomer and comprising a receiving cavity (6) for connecting with a displacement transferring element and a cap-shaped piston section (8) completely enclosed in an inert film (9′), the piston section in a working position facing contents of a syringe or carpule cylinder (1), an outer circumference of the piston section with its inert film (9′) abutting against the syringe or carpule cylinder (1), the piston stopper (2) having an uncoated sealing section (10) adjacent to the piston section (8), the uncoated sealing section and an entire edge region of the inert film (9′) flatly abutting in the working position against the syringe or carpule cylinder (1), the uncoated sealing section having at least two continuous sealing lips (11) on its outer circumference spaced-apart by a continuous recess (12), wherein the base body (7′) is made in one piece, with the receiving cavity (6) extending up into the piston section (8), and wherein the sealing section (10) has on its outer circumference an annular continuous sealing zone (13) directly adjacent to and directly adjoining the edge region of the inert film (9′) enveloping the piston section (8) and abutting against an inside wall of the syringe or carpule cylinder (1), said annular continuous sealing zone (13) projecting slightly radially beyond a surface of the entire edge region of the inert film (9′), so that in the working position the piston stopper (2) abuts with the sealing section (13) fully against the syringe or carpule cylinder (1).