Black and natural PP Schedule 80 threaded nipples are precision molded polypropylene connectors engineered for strength, chemical resistance and reliable sealing. Black PP is commonly used in chemical processing, industrial plating, chilled water, deionized water and wastewater systems, providing durable performance in demanding environments. Natural PP is ideal for high purity and corrosive applications including semiconductor, laboratory and chemical processing where contamination resistance is essential. Both types feature tight dimensional tolerances, consistent wall thickness and long service life.