Devices, systems, and methods are disclosed which relate to a catheter cap which seals a reservoir of a catheter introducer. The catheter cap secures over an introducer tip to prevent airflow into the introducer tip. The catheter cap utilizes an elongated stem to block a distal opening of the reservoir to further prevent airflow. A lip of the catheter cap may further engage an insertion stop point of the catheter introducer to secure the catheter cap. The catheter cap ensures proper lubrication of the introducer tip and the catheter during insertion of the catheter into the urethra of a user.
