Rayburn Gasket R3900 Jgsg342149 Mx

Rayburn Gasket R3900 Jgsg342149 Mx

Rayburn Gasket – For MX Burners (Part No: R3900 / JGSG342149)
Genuine High-Temperature Seal for Rayburn MX Burner Units

The Rayburn Gasket R3900 (also referenced as JGSG342149) is a genuine, heat-resistant burner gasket designed for Rayburn MX oil burner systems. This essential seal ensures a tight, secure fit between key burner components—typically between the burner flange and the combustion chamber—helping to prevent the escape of combustion gases and ensuring efficient burner operation. Whether you're carrying out a routine service or replacing worn parts, this gasket is crucial for safe, long-lasting performance.

Key Features:

• Genuine Rayburn OEM Part – Manufactured to exact Rayburn specifications for perfect fit and performance

• High-Temperature Resistant – Engineered to withstand burner heat and pressure

• Improves Combustion Efficiency – Maintains airtight seal for safe and optimal burner operation

• Easy to Replace – Designed for straightforward installation during servicing

• Essential Maintenance Part – Ideal for burner rebuilds, repairs, or annual servicing

Compatible With:

• Rayburn MX Series Burners

• Commonly fitted to Rayburn oil-fired cookers and boilers including:

  • Rayburn 400K

  • Rayburn 480K

  • Other MX-equipped Rayburn heating appliances
    (Always verify your burner model or serial number to confirm compatibility with part number R3900.)

When to Replace the Gasket:

• During annual servicing or burner overhaul

• If the existing gasket is:

  • Cracked, brittle, or carbonised

  • Showing signs of gas or oil leakage

  • Deformed due to high heat exposure

• When replacing or removing the burner—gaskets should not be reused

Tip: A worn or leaking gasket can lead to loss of burner pressure, reduced efficiency, or even safety risks. Always replace the gasket when servicing or refitting the burner.

Technical Specifications:

• Part Number: R3900

• Alternate Reference: JGSG342149

• Material: Heat-resistant gasket fibre

• Application: Burner mounting or sealing gasket for MX burner units

• Fitment: Between burner and appliance combustion chamber or blast tube assembly

• Dimensions: Factory-cut to suit MX burner installation (specific measurements available on request)