Product Overview
This document provides essential information for the Sime Burner Seal, specifically designed for use in Sime Praktica HE 25 and HE 36 boiler models. This component is crucial for maintaining the integrity and efficiency of your boiler's burner system by ensuring a proper seal.
Key features of this product include:
- High-quality sealing material.
- Designed for specific Sime boiler models.
- Essential for preventing gas leaks and optimizing combustion.
Product Image

The image displays the Sime Burner Seal, a black circular cord, enclosed in its original clear plastic packaging. The packaging features the text "ricambi originali" (original spare parts) and a label indicating the part number "6326945" and "Fibre sealing cord". The bottom of the image shows the "resan" logo and website, indicating the distributor.
Setup and Installation
Installation of the Sime Burner Seal should only be performed by a qualified and competent professional, such as a Gas Safe registered engineer (or equivalent in your region). Incorrect installation can lead to serious safety hazards, including gas leaks or improper boiler operation.
General steps for seal replacement typically involve:
- Ensure the boiler is completely shut down and isolated from all power and gas supplies.
- Allow the boiler to cool down completely.
- Access the burner assembly according to the specific boiler model's service manual.
- Carefully remove the old, worn seal.
- Clean the sealing surfaces thoroughly to remove any residue or debris.
- Position the new Sime Burner Seal correctly in its designated groove or location.
- Reassemble the burner and boiler components, ensuring all connections are secure.
- Perform necessary safety checks, including leak detection, before restoring power and gas.
Warning: Do not attempt to install this part if you are not qualified. Refer to your boiler's specific service manual for detailed, model-specific instructions.
Operating Considerations
The burner seal is a passive component that ensures the safe and efficient operation of your boiler's combustion chamber. Once correctly installed, it requires no direct user operation. Its function is to maintain a gas-tight seal, preventing combustion gases from escaping and ensuring optimal air-fuel mixture for efficient burning.
Proper operation of the boiler relies on the integrity of this seal. Any signs of gas odor, unusual noises, or decreased boiler performance may indicate a compromised seal and require immediate professional inspection.
Maintenance
The Sime Burner Seal itself does not require routine maintenance. However, it is a wear-and-tear component that should be inspected periodically as part of your boiler's annual service by a qualified professional.
During boiler servicing, the professional will typically:
- Visually inspect the seal for signs of degradation, cracking, or hardening.
- Check for any evidence of gas leakage around the burner assembly.
- Recommend replacement if the seal shows any signs of wear or damage, even if minor.
Replacing the seal proactively during routine maintenance can prevent future issues and ensure the continued safe operation of your boiler.
Troubleshooting
As a static component, the burner seal itself does not typically "malfunction" but can degrade over time. Issues related to a faulty burner seal are usually symptoms of a larger boiler problem and require professional diagnosis.
Potential indicators of a compromised burner seal may include:
- Gas Odor: A distinct smell of gas near the boiler. This is a critical safety concern and requires immediate action. Turn off the gas supply and ventilate the area. Do not operate the boiler.
- Reduced Boiler Efficiency: If the boiler is consuming more fuel than usual or struggling to heat water/radiators, a faulty seal could contribute to inefficient combustion.
- Unusual Noises: Hissing or whistling sounds from the boiler could indicate a gas leak through a compromised seal.
- Error Codes: Some modern boilers may display specific error codes related to combustion issues that could indirectly point to a seal problem.
Important: If you suspect a gas leak or any issue related to the burner seal, immediately contact a qualified heating engineer. Do not attempt to repair it yourself.
Specifications
| Manufacturer | SIME |
| Product Type | Burner Seal / Sealing Cord |
| Compatible Models | Sime Praktica HE 25, Sime Praktica HE 36 |
| Part Numbers | 6326945, 8115000, 99186306 |
| ASIN | B09Q1G5351 |
| First Available Date | January 8, 2022 |
Warranty Information
Specific warranty details for this Sime Burner Seal are not provided in the product information. Please refer to the original point of purchase or the manufacturer's official website for any applicable warranty terms and conditions.
Customer Support
For technical assistance, installation guidance, or troubleshooting beyond the scope of this manual, it is highly recommended to contact a qualified heating engineer or the official Sime customer support channels. Contact information for Sime can typically be found on their official website or through your boiler's documentation.
Always ensure that any work on gas appliances is carried out by certified professionals.





