Baxi Burner Seal Kit Replacement

The Baxi Burner Seal 5114755 is designed to restore a secure seal around the burner/combustion area on compatible Baxi boilers. Burner seals are essential for maintaining correct air flow and combustion performance, helping to prevent unwanted air leakage and supporting safe, efficient operation.

If the burner seal is worn, flattened, or damaged often noticed during servicing the boiler may suffer from poor combustion, soot marks, unusual smells, reduced efficiency, or intermittent fault issues. Replacing the seal kit when the burner is removed helps ensure the assembly is correctly resealed and operating as intended.Combi series

Compatibility :

• Combi 124, 128, 24, 28, 33, 40, 28 Compact
• Combi HE 24, 28, 33
• Duo Tec HE 24, 28, 33, 40
• Duo Tec HE A 24, 28, 33, 40
• Duo Tec 2 GA 24, 28, 33, 40
• Duo Tec Combi ErP 24, 28, 33, 40
• EcoBlue Combi 24, 28, 33
• EcoBlue Advance Combi 24, 28, 33, 40
• Advance Combi ErP 24, 28, 33, 40
• Plus Combi 24, 28, 33
• Plus Combi ErP 24, 28, 33
• Neta-Tec GA 24, 28, 33
• Neta-Tec Plus Combi GA 24, 28, 33
• Platinum Combi HE 24, 28, 33, 40
• Platinum Combi HE A 24, 28, 33
• Platinum 2 Combi GA 28, 33, 40
• System 12, 15, 18, 24, 28, 32
• System ErP 12, 15, 18, 24, 28, 32
• HE System 15, 18, 24, 28, 32
• Megaflo HE A 15, 18, 24, 28, 32
• Megaflo 2 System Compact GA 12, 15, 18, 24, 28, 32

Important fitting advice

We recommend that all parts are fitted by a fully qualified Gas Safe registered engineer. If you need help confirming the right part, contact us our team has 10+ years of boiler spares knowledge and friendly chat support to help you quickly.

Delivery

At Boiler Spares Hub, we dispatch orders within 1 working day (Monday-Friday). Orders placed outside working days will be dispatched on the next working day. For delivery options available for this product, please add it to your basket or check our delivery options page.

Returns

We accept 30-day returns. Returns must be in an unopened, sealed box. If we find the item has been used or installation was attempted, we may refuse the return.

Frequently Asked Questions (FAQs)

1) What is a burner seal kit used for?
It seals the burner/combustion chamber area to maintain correct airflow and safe, efficient combustion.

2) When should I replace the burner seals?
Replace them whenever the burner is removed during servicing, or if the seals look flattened, cracked, brittle, or show soot/leak marks.

3) What symptoms can a worn burner seal cause?
Poor combustion, soot staining, unusual smells, reduced efficiency, noisy operation, or intermittent fault issues due to air leaks.

4) Which boilers does this seal kit fit?
It fits selected Baxi models including 124/128 Combi and various Duo Tec HE/HE A versions (fitment depends on model and serial range). Always match your appliance details before purchase.

5) Can I fit this kit myself?
It’s recommended to be fitted by a qualified engineer, as correct sealing is essential for safe combustion and to prevent leaks.