The nylon ring for the banjo bolt of the Citroën 15CV carburetor is a specific plastic sealing element designed to prevent leaks within the fuel system. The ring serves as a gasket between the banjo bolt and its mating surfaces, ensuring a tight seal. Nylon is used for its durability and resistance to fuel, which extends the part's lifespan. This ring is crucial for maintaining classic Citroën models and helps preserve optimal car performance. An indispensable component for enthusiasts looking to keep their classic vehicles in peak condition.