Bostik Seal "N" Flex® 1 is a low modulus, one component, Class-A polyurethane sealant. When cured it will form a tough and flexible seal capable of cyclic expansion and compression movement of 100% (+ 50%) of the original installed joint width.
Bostik Seal 'N' Flex® One Plus P590 is a low modulus, universal polyurethane sealant, made in Australia, for construction and expansion joints, handling cyclic movement of +100%/-50%.