POTASSIUM CHROMATE Resistant O-Rings and Seals

Potassium chromate, also known as potassium bichromate, is an inorganic compound that is commonly used as a pigment for painting, inks, and dyes. It is also used in some chemical and laboratory experiments. When exposed to potassium chromate, rubber materials may experience swelling, cracking, hardening, and discoloration due to corrosion. Natural rubber, EPDM, and neoprene rubbers are particularly vulnerable to the chemical and may experience significant degradation in a short time. Nitrile, silicone, and fluorocarbon rubbers may be more resistant to the chemical and remain unaffected. The severity of the failure depends on the type of rubber, the concentration of the chemical, and the length of exposure.