GW0701 suits Simson S50, S51, S70 and other models. The material is cold-rolled steel sheet, and the surface is yellow zinc-plated, which protects and prolongs the metal’s lifespan while preventing oxidation and corrosion. The inner part of the fuel tank cap often comes into contact with gasoline, making it prone to delamination and reducing sealing effectiveness over time. Therefore, we use NBR, which is oil-resistant, to resolve these issues. If you are looking for Ford gas cap or Suzuki fuel tank cap, we have what you need.