O 40X3.5 Red De Dietrich 721395800

The Or 40X3.5 Red is a high-quality O-ring designed for sealing applications in heating systems. With dimensions of 40mm inner diameter and 3.5mm cross-section, this red O-ring provides a dependable seal to prevent gas or fluid leaks. It is commonly used in boiler and burner assemblies where a precise fit is required. Replace worn O-rings during routine maintenance to ensure optimal performance and safety of your heating equipment.