Seal the end of 3 in. Sewer and Drain (S&D) pipe with the National Diversified Sales 3P06 3" White PVC S&D Cap. This cap is used to stop the flow of water at the end of the pipeline. The cap is made of heavy-duty polyvinyl chloride (PVC) and can be solvent-welded for a watertight connection. Meets applicable ASTM standards. For use in non-pressurized underground sewer and drainage applications; maximum working pressure of 5 psi. Hassle-free limited lifetime warranty guarantees the NDS product is free from defects—or we’ll replace it.