The Baxi 5115768 O-Ring 100 mm is a genuine replacement sealing component designed to create a reliable, leak-free joint between critical parts in your boiler or heating system. O-rings provide a flexible, resilient seal at connections where metal faces meet, helping prevent water or gas leaks, maintain correct system pressures and protect internal components from moisture ingress. A worn, cracked or hardened O-ring can lead to leaks, pressure loss or fault codes, so replacing it with the correct OEM part is essential for dependable operation.

This 100 mm O-ring is compatible with Baxi boilers and systems that specify part number 5115768 in their technical documentation. To ensure correct fitment and sealing performance, always verify the part number on your existing O-ring or consult your boiler’s service information before installation, as sealing components vary between models and applications.

Supplied ready for direct replacement, the 5115768 O-Ring fits into the designated groove or connection point when installed by a qualified engineer. Choosing this genuine Baxi component helps restore proper sealing integrity, supports stable pressures and contributes to reliable heating and hot-water performance in compatible boilers and systems.