The Worcester Bosch spare O-rings can be used in the hydraulics of the CDi Series, Compact, Greenstar, Greenstar Er P, I Junior Series, Si and C1 Series, Bosch, SBi Series, CDi Xtra Series, Greenstar Oil, I Series and RD Series boilers. Many different sections of the boiler require O-rings, gaskets and washers to connect parts to the pipes. For the purpose of preventing gas and water leaks, heat exchangers and gas valves, among others, need these components.

Brand Name	Worcester Bosch