Established in 1972, NPC designs and manufactures a variety of sanitary and storm drainage products for the pipe and precast industries. Its products include concrete pipes, manhole connectors, sealants, core drills, plastic pipe adapters, reinforcement fibers, gutter frames, chimney seals, barrel joints, and liner end and external pipe joint seals. The company s products are used in box culverts, utility vaults, septic tanks, wet wells, storm sewer manholes and concrete wall panel systems. It offers products under various brand names, such as Kor-N-Seal, Hydrokor and FlexRib. The company additionally provides diamond core drilling machines, steel holeformers and vacuum testers. It offers distribution, technical support, maintenance, installation, repair and delivery services. NPC is a member of the American Concrete Pipe Association and American Public Works Association.