De Dietrich 300007460 sealant Wezilit W1000-310ML

This is De Dietrich 300007460 sealant, also listed as catalogue article 336.469.001, in the boiler housing parts category. Parts of this type are used to seal joints between casing panels, around doors, and at penetrations where components pass through the boiler housing or combustion chamber enclosure. They prevent flue gas leakage, maintain the pressure integrity of the combustion chamber, and help keep insulation in place. When selecting a sealant for boiler housing applications, consider the maximum temperature it will be exposed to, its adhesion to metals and ceramics, and its resistance to moisture and combustion by-products. The sealant should accommodate thermal expansion without cracking or losing bond. During replacement, completely remove the old sealant and clean the surface to ensure a proper seal. Application instructions for the specific product, including curing time and recommended bead thickness, should be followed.