Chimney inner sleeve WADEX 125 mm diameter, model 125150160

WADEX chimney inner sleeve with 125 mm diameter (model 125150160) is an internal lining component designed for chimneys and flue systems that require a 125 mm bore. The sleeve creates a defined, smooth passage for exhaust gases, helps align and connect flue pipes, and can be used in repair, retrofit or new installation projects where a 125 mm internal sleeve is required. The product is intended to be installed inside an existing chimney or flue to restore or standardize the internal diameter for safe and efficient exhaust flow.

Advantages

The WADEX inner sleeve is manufactured to provide a consistent 125 mm internal diameter that facilitates easy connection of matching flue pipes. It restores a uniform bore in worn or damaged chimneys, reduces leakage paths for combustion gases, and supports stable exhaust flow. Its simple cylindrical form allows rapid insertion and alignment during installation, and it is compatible with common chimney repair and flue fitting practices.

Suitable for

• Replacing a damaged or corroded chimney lining that requires a 125 mm bore
• Retrofit projects where a standardized 125 mm internal diameter is needed for new flue components
• New installations that require an internal sleeve to connect flue pipes and ensure defined exhaust passage
• Maintenance work to restore draft and reduce leak paths in small-capacity flues

Key specifications

• Internal diameter: 125 mm
• Form: cylindrical inner sleeve for chimney/flue lining
• Intended use: lining and alignment of flue gases and flue pipe connections
• Application areas: chimney repair, retrofit and new installation of small-bore flues

How to use

Prepare the chimney or flue by removing loose debris and verifying the internal passage is accessible. Measure the insertion depth required and slide the sleeve into the chimney until properly seated and aligned with the flue outlet. Ensure the sleeve end aligns with the connection point for the flue pipe and secure connections according to local codes and the flue pipe manufacturer's instructions. Seal joints and any gaps as required to maintain safe exhaust containment and to prevent leakage of combustion gases into surrounding structures.

Usage recommendations

Confirm compatibility of the 125 mm sleeve with the appliance and flue fittings being used and follow local building and safety regulations. Inspect the chimney structure for damage before installation; if structural repair is needed, complete it prior to inserting the sleeve. Use appropriate sealing materials and fastening methods recommended for flue systems, and consider a professional inspection or installation where required by local codes.