Potassium bisulfite, also known as potassium hydrogen sulfite, is a common chemical used in a wide range of industries. It is an inorganic salt used as an antioxidant, bleaching, and preservative agent in food, beverage, and industrial applications. Common uses include in wine-making, juice-making, dairy products, and as a dechlorination agent in water treatment.
When rubber is exposed to potassium bisulfite, it may cause accelerated oxidation, softening, and discoloration. It can also cause swelling and hardening, leading to cracking and material failure. In some cases, the chemical may cause a reaction that can reduce the rubber's physical properties, such as its elasticity, compression set, and strength.
Viton ® o-rings from Marco Rubber offer excellent compatibility with a range of chemicals, oils and resist high temperatures up to 400F. Viton ® is also known as FKM made of fluoroelastomer one of the most versatile and widely used sealing materials.
View some of our other material compatibility ratings with POTASSIUM BISULFITE. If you don't see what you're looking for or need more guidance, our team of experienced sealing design engineers can help select the best sealing products and material for your specific application.View Full Chemical Compatibility Guide