Selleys N Mastic Sealant is a non skinning poly-butene based compound that serves as an excellent barrier to moisture vapour. This non-hardening sealant remains permanently flexible and is suitable for sealing concealed lap joints between plastics, metals, timber, glass, masonry, and expanded foam panels.

• Good adhesion to most substrates

• Microbe resistant formula

• Withstands temperatures of -40˚C to +80˚C

• Low shrinkage