Seal N Flex 1 is a low modulus one component Class A polyurethane sealant.

When cured it will form a tough flexible seal capable of cyclic expansion and compression movement of 100% (+ 50%) of the original joint width. Seal N Flex 1 is virtually unaffected by normal weathering conditions such as rain sunlight snow sleet ultra-violet radiation ozone atmospheric contamination and pollution.  Its excellent weather ability enables it to retain its original properties after years of exposure