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Installation Instructions for Snap Seal Inclinometer Casing <br /> 5 Assembly of Snap Seal Casing <br /> 5.1 Snap Seal Casing Sections <br /> Each section of casing has a male end with an alignment key, and a lock ring, and a female end with a <br /> keyway, O-ring, and lock ring (Figure 1). Casing is installed with the female end facing up. O-rings come <br /> greased from the factory, and are protected by a cap. In the field, remove the cap and ensure that that <br /> the O-ring is still greased. Take care to keep the casing ends clean to ensure a proper seal. Please note <br /> the female ends of the casing have three slots in them. These are stress relief cuts which facilitate the <br /> insertion of the male end of the subsequent casing section. <br /> • <br /> i <br /> Figure 1 —RST Snap Seal Casing <br /> 6 <br />