This Worcester burner gasket is designed for the gas assembly of Greenstar and Greenstar ERP boilers. O-rings, gaskets, and washers are crucial components used in various parts of the boiler to ensure secure connections to pipework, preventing leaks of gas and water from areas such as heat exchangers and gas valves. It is essential that boiler spare parts are fitted by a certified Gas Safe engineer. Orders received before 4pm are typically dispatched for next business day delivery.