حلقة O-ring مقاس 21x5 مم من De Dietrich 95023200

This O-ring with dimensions of 21x5 mm is a versatile sealing solution for various applications in heating equipment. Whether you are repairing a gas burner or maintaining a boiler, this rubber ring provides a reliable barrier against leaks. Its standard size makes it a handy spare part for technicians and DIY enthusiasts working on boiler spare parts.