The film packing for a pasty substance comprises a film tube bag (12) having a peripheral wall (14) and two ends (16), and a cover portion (22) fastened to one of the two ends (16) of the film tube bag (12). The cover portion (22) comprises an end face (24) having a passage opening (32) for the passage of pasty substance from the opened film tube bag (12), a peripheral face (26) joining the end face (24), and a sealing element (52) abutting to a receiving headpiece (36) attachable to the end (16) of the film tube bag (12) carrying the cover portion (22), which receiving headpiece surrounds at least the end and peripheral faces (24,26) of the cover portion (22) and comprises an outlet piece (44) which is in fluid connection with the passage opening (32) of the cover portion (22) when the receiving headpiece is attached (36). The sealing element (52) is arranged on the peripheral face of the cover portion.