Yes, one of the primary functions of tubeless rim tape is to provide an effective seal against air leaks, ensuring a
reliable tubeless setup. When installed correctly, tubeless rim tape covers the spoke holes and seals the rim bed, creating an airtight barrier that allows the tire to hold air without the need for an inner tube.
The adhesive backing on tubeless rim tape helps to create a tight seal between the tape and the rim bed, preventing air from escaping through the spoke holes or gaps between the tape and the rim. This seal is essential for maintaining tire pressure and preventing flats while riding.
However, it's important to note that the effectiveness of the seal depends on the quality of the rim tape, as well as proper installation techniques. It's crucial to clean the rim bed thoroughly before applying the tape to ensure optimal adhesion and sealing. Additionally, inspecting the tape regularly for signs of wear or damage and replacing it as needed can help maintain a reliable tubeless setup over time.