T&B Fittings XD Expansion/Deflection Couplings for Rigid Conduit from Thomas & Betts support movement and thermal expansion in conduit runs, providing flexible, watertight connections. They incorporate Erickson conduit unions that reduce installation time and effort, and they feature durable, protective stainless steel inner sleeves that facilitate wire installation. They accommodate axial or parallel movement up to 3/4 inch, as well as angular movement up to 30 degrees from the normal position.