A syringe tip cap sealingly closes a distal opening of a syringe body. The syringe tip cap has a fastening ring which can be placed and fastened on the syringe body about the distal opening, and a closure cap which closes the distal opening in a sealed manner and is connected releasably to the fastening ring. The fastening ring has a locking means device that locks together with a locking device of the closure cap. The locking device of the fastening ring and the locking device of the closure cap are configured in such a way that they cannot be unlocked without sustaining damage. The syringe tip cap may be produced in a two-component injection molding process.