Nylon Fittings have good resistance to organic solvents, oils, and gasoline. Good strength at high temperatures. Good for hot and cold-water applications. Long-time weathering resistance. Good impact resistance both single and repeated. Not recommended for use with ammonium, boric acid, calcium, sulphuric acid, or hydrochloric acid. Fittings are also available in Celcon, Polypropylene, Kynar to special order. See chemical resistance chart below for rating.