A fluid that will combine with carbon to form carbon monoxide or carbon dioxide. Oxidizers attack all forms of carbon so that means they will attack anything black in color, and that included black O-rings.
Chloric acid ignites organic material on contact.
Ferric chloride used in sewage treatment, photography, medicine and feed additives. Hot sulfuric acid, the most widely used industrial chemical. Hydrofluoric acid used for etching, cleaning castings and fermentation. Nitric acid used in fertilizer, dyeing, explosives, drugs, etching and medicine. Oleum used in the manufacture of detergents and explosives.