When fitting to a petrol (gasoline) tank, or a tank containing fuel with a high ethanol content, Viton gaskets are essential for maintaining the integrity of your fuel system. These specialized gaskets prevent swelling over time, ensuring a secure and reliable seal. 

Viton, a high-performance synthetic rubber, is renowned for its excellent resistance to chemicals, fuels, and extreme temperatures, making it the ideal material for fuel system applications.

The use of Viton O'rings and gaskets is particularly crucial in modern fuel systems, where ethanol-blended fuels are becoming increasingly common. These blends can cause standard rubber gaskets to deteriorate rapidly, leading to potential leaks and system failures. By choosing Viton replacement O'rings and gaskets, you're investing in the longevity and safety of your fuel system.

These replacement Viton O'rings and gaskets are specifically designed to fit a range of sender units and flanges, ensuring compatibility with various fuel system components. The S3 Sender requires two Viton O'rings of different sizes, while the S5 Sender and the FL-2, FL-3, and HFL Flanges each require a single Viton gasket. By using these high-quality Viton replacements, you can maintain the optimal performance and safety of your fuel system, regardless of the type of fuel you're using.

Regular inspection and replacement of these Viton O'rings and gaskets is recommended as part of routine maintenance to prevent potential fuel leaks and ensure the continued efficiency of your fuel system. The superior chemical resistance of Viton material means these replacements will provide long-lasting protection against the corrosive effects of modern fuels, including those with high ethanol content.