The 4" x 1-¼” Well Seal is a durable cast iron single-hole well seal designed to secure a 1‑1/4” drop pipe in a 4" well casing. It provides a watertight seal at the top of the well, preventing surface contamination while allowing the drop pipe and electrical conduit to pass through. Its split plate construction ensures long-lasting strength, and the 1/2" vent and 1" FNPT conduit opening make installation straightforward for submersible pump setups.