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Maintain the integrity and safety of combustion chambers with our extensive range of replacement oil and gas burner seals and gaskets. Manufactured to exact original equipment standards, these high-temperature components are essential for preventing dangerous leaks and ensuring optimal boiler efficiency during routine servicing.
Find it, fit it, fix it. Servicing and repairs made easy with spares finder at City Plumbing
UCP Gasket Burner U175572
436711

UCP Gasket Burner U175572

£23.76

each, Inc. VAT
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Vaillant 0020272056 Seal Kit
433470

Vaillant 0020272056 Seal Kit

£118.80

each, Inc. VAT
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Riello 3007178 O Ring
477956

Riello 3007178 O Ring

£1.31

each, Inc. VAT
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Zip SP92406 Gasket Kit
433382

Zip SP92406 Gasket Kit

£78.00

each, Inc. VAT
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Vaillant 0020195477 Gasket
435056

Vaillant 0020195477 Gasket

£15.29

each, Inc. VAT
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Alpha 3.027771 Seal Kit
436135

Alpha 3.027771 Seal Kit

£104.40

each, Inc. VAT
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Showing 1—30 items of 74
Burner seals and gaskets are vital safety components designed to withstand extreme thermal stress and chemical exposure within the combustion chamber of oil and gas boilers. Over repeated heating cycles, these graphite, rubber, and high-temperature fibre materials naturally degrade, which can lead to hazardous flue gas leaks or a drop in system efficiency. Carrying the correct manufacturer-approved replacement gaskets ensures that every service or repair complies with strict Gas Safe and OFTEC regulations. Our comprehensive stock covers exact-fit spares for a wide variety of commercial and domestic boilers, allowing heating engineers to confidently reseal burner doors, electrodes, and heat exchangers. Replacing these low-cost items at every major service interval guarantees a safe, airtight seal, protecting both the appliance performance and the property occupants.

Frequently Asked Questions

Why is it necessary to replace a burner gasket during an annual boiler service?
Once a burner door is opened for cleaning or inspection, the existing gasket often loses its structural integrity and ability to form a complete seal. Reusing a compressed or heat-damaged seal can lead to dangerous products of combustion escaping from the casing. Most boiler manufacturers stipulate that burner seals and gaskets must be replaced every time the combustion chamber is accessed to maintain strict safety standards and protect the appliance warranty.
How do I ensure I am buying the correct replacement seal for a specific burner?
The safest and most accurate way to identify the correct gasket is by checking the manufacturer instructions or the appliance data badge for the exact boiler model and serial number. Burner seals are precision-engineered to fit specific heat exchangers and burner doors, meaning a generic or incorrectly sized gasket will fail to provide an airtight seal. Always order the manufacturer-approved part number to guarantee compliance and safe operation.
How quickly can I get replacement oil and gas burner gaskets?
When you have a boiler stripped down for a service, getting parts fast is a priority. We offer Free Click & Collect in as little as 5 minutes from our nationwide network of over 350 branches. For jobs where you prefer direct delivery to site, we provide free next working day delivery on orders over £75 ex VAT placed before 5:00 PM Monday to Friday.