Trelleborg 116 is designed as a sliding seal to which lubricant has been applied between the sliding skin and the body of the seal. The tip of the skin is folded over and glued to the body of the seal to ensure the lubricant stays in place.
This design permits installation with very low force, as there is no friction between rubber and concrete and make the system easy to center during jointing. During installation, the adhesive joint releases allowing the lubricated skin to slide over the body of the seal.
Joint performance is dependent on dimensional accuracy and surface finish of socket and spigot.
Trelleborg 116 Pre-Lube Manhole seal meets all relevant current European Standards.