The Cylinder Backup Ring is designed to support and enhance the sealing performance with the adjacent O-ring seal, it fits accurately within the cylinder head groove alongside the O-ring, preventing extrusion under high hydraulic pressures. This mechanical support ensures the O-ring remains securely seated, maintaining effective fluid containment and preventing leaks.Attributes:• Ensures reliable fluid containment.• Good abrasion resistance.• Resistant to hydraulic fluids, oils, and chemicals.• Provides effective sealing under high pressure.• Retains shape under pressure.Applications: The Cylinder Head Backup Ring is installed within the steering cylinder head, adjacent to the O-ring seal, to provide additional support and prevent extrusion.