Trelleborg 146 is a pre-lubricated sliding seal that is stretched onto the spigot of the pipe or manhole. Additional lubricant is not required for joint assembly.
The joint is designed so that the pre-lubricated mantle rolls onto the top of the spigot shoulder and into the small gap between spigot and socket during installation. This prevents concrete to concrete contact and gives efficient distribution of transverse shear loads across the joint. The design optimizes joint performance and provides an exceptionally high level of operational reliability.
The seal is easy and clean to handle as the lubricant is enclosed in the sliding mantle. This allows installation with very little force as there is no friction between the rubber and concrete. Joint performance is dependent on dimensional accuracy and surface finish of socket and spigot.
Trelleborg 146 Pre-Lube seal meets all relevant current European standards.