Chimney inner sleeve WADEX 126 inject diameter

Chimney inner sleeve WADEX 126 inject diameter is a stainless lining element designed for flue systems that require a 126 mm internal sleeve. It provides a continuous, smooth passage for combustion gases, helps protect the existing chimney masonry or metal structure from corrosive deposits and heat, and supports consistent draft performance. The sleeve is intended as a replacement part or retrofit insert for residential and small commercial chimneys where a precisely sized inner diameter is needed to match appliance flue connections.

Advantages

The WADEX inner sleeve offers a corrosion-resistant internal surface that reduces soot adhesion and facilitates condensate runoff, which contributes to longer service life of the chimney system. Its uniform 126 mm inject diameter ensures secure coupling with compatible flue pipes and minimizes leakage paths for combustion gases. Installation of the sleeve reduces the need for frequent masonry repairs and can improve overall flue efficiency by restoring optimal flow dynamics.

Suitable for

• Repairing damaged brick or masonry chimneys that need an inner liner with a 126 mm diameter
• Retrofitting older chimneys to adapt to modern boilers, stoves, or gas appliances with 126 mm flue outlets
• Maintenance projects where restoring smooth internal surfaces improves draft and reduces soot build-up
• Small commercial and residential installations requiring a precise inner sleeve diameter for safe exhaust

Key specifications

• Internal diameter: 126 mm nominal for inject-style connection
• Material: corrosion-resistant metal alloy suitable for exhaust gases (stainless or similar grade)
• Design: continuous smooth lining to guide combustion gases and condensate
• Application: intended for use inside masonry or metal chimneys as a liner/insert
• Compatibility: sized to couple with flue components and appliances specified for 126 mm inner diameter

How to use

Measure the existing chimney throat and confirm the required 126 mm internal diameter before selecting the sleeve. Prepare the chimney by removing loose debris, soot and obstructions, and ensure the chimney structure is sound. Insert the sleeve into the chimney following manufacturer guidance for alignment and seating; secure connections where the sleeve couples to appliance flue pipes with appropriate seals and mechanical fasteners as required. After installation, perform a smoke or draft test and inspect joints and seals for tightness. If uncertain about installation, consult a qualified chimney technician or installer to ensure compliance with local building and safety codes.

Usage recommendations

Use the WADEX 126 inner sleeve in chimneys that match the product’s specified diameter and construction requirements. Periodically inspect the sleeve and adjoining flue connections for signs of corrosion, soot accumulation or joint deterioration. Maintain clearances and sealing as recommended by appliance and local regulations, and schedule routine flue cleaning to preserve draft efficiency and safety.