Concentrated hydrochloric acid, also known as fuming hydrochloric acid, is a highly corrosive, colorless to yellow-tinged liquid with an intensely pungent odor. It is commonly used in the production of inorganic chemicals, metal processing, and the manufacture of dyes and pigments.
When rubber is exposed to concentrated hydrochloric acid, the rubber may experience a decrease in tensile strength, elongation, and tear strength. In addition, the rubber seal can become brittle and crack or fracture. The rubber seal can also become discolored and pitted due to corrosion from the acid. The rubber seal may also swell and soften due to the acid. Furthermore, the rubber may become permanently damaged due to the high temperatures of the concentrated acid.
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 HYDROCHLORIC ACID, CONCENTRATED TO 158°F. 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