PHOSPHORIC ACID, 3M TO 158°F Resistant O-Rings and Seals
Phosphoric acid, also known as orthophosphoric acid, is an inorganic compound with the chemical formula H3PO4. It is commonly used in many industries, such as food and beverage, pharmaceutical, agricultural and industrial production, and water treatment. It is also used as a cleaning agent for metal surfaces and to remove rust from steel.
When rubber is exposed to phosphoric acid at temperatures ranging from 3 to 158°F, it is prone to hardening and cracking due to the acidity of the chemical. Elastomers, which are typically used in rubber seals, are especially vulnerable to the corrosive effects of the acid. Over time, the acid can cause the rubber to become brittle and lose its elasticity, leading to failure. Additionally, the acid can cause the rubber to become permanently stained, discolored, and distorted.
FKM (Viton®)
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.
V1000 FKM
- General purpose material
V1003 FKM
- General purpose material
V1007 FKM
- For higher pressure applications
Rubber Material Compatibility with PHOSPHORIC ACID, 3M TO 158°F
View some of our other material compatibility ratings with PHOSPHORIC ACID, 3M 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
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