A Quad Ring Seal within the Secondary Fuel Filter serves to create a reliable, pressure-resistant seal between components, ensuring the prevention of fuel leakage with precise tolerance control in the machine. It is made up of rubber, which offers excellent resistance to fuel, oil, and other chemicals found in the fuel system.Attributes:• Ensuring a proper fit and reliable performance• Handle high pressure without deforming or breakingApplications:A Quad Ring Seal offers excellent sealing performance and reduces the risk of leakage for fuel filters, providing reliable performance and durability.