Rubber Expansion Joints, Technics : Extrusion

Single sphere rubber bellows expansion joint, with flanges. Some types of rubber expansion joints are made with a molding process. Throughout the year, building faces, concrete slabs, and pipelines will expand and contract due to the warming and cooling through seasonal variation, or due to other heat sources. Before expansion joint gaps were built into these structures, they would crack under the stress induced. Rubber expansion joints are made with a molding process.