Naftoseal MC-115 is a single-component adhesion promoter for Naftoseal MC-780 polysulfide sealants, suitable for metal, composite, and solvent-resistant coated surfaces. It enhances sealant bonding and durability under demanding conditions.

Formulated with surface activators and organic solvents, it is applied using a brush or lint-free cloth on clean, dry surfaces. A uniform red color indicates proper coverage. Drying time: approx. 10 minutes at 23°C / 50% RH.

If the sealant is not applied within 4 hours, reapplication is required. Available in 250 ml and 1-liter bottles, with a shelf life of 6 months when stored below 26°C.