O-ring 18x3 De Dietrich 7690202

This O-ring with dimensions 18x3 mm is a small but critical sealing element for heating equipment. It prevents leaks in connections between boiler spare parts and burner components, ensuring efficient operation. Made from durable material, it withstands temperature and pressure variations common in heating systems. When replacing seals during boiler maintenance, this O-ring provides a reliable barrier against gas or water escape. A must-have for any repair kit focusing on burner spare parts and system integrity.