Potassium phosphate, also known as tripotassium phosphate, is an alkaline salt commonly used as a buffer, an electrolyte, and a fertilizer. It is also used to stabilize pH levels in a variety of industrial applications.
When rubber is exposed to potassium phosphate, alkaline attack can occur. Alkaline attack can cause the rubber to become brittle and crack more easily. Additionally, the rubber can suffer from swelling, softening, and discoloration, which can weaken its structural integrity. In extreme cases, the rubber may become so damaged that it breaks apart completely.
Fluorosilicone o-rings are a hybrid of silicone and FKM resulting in great jet fuel resistance with high and low temperature performance. Also widely used in semiconductor Ashing equipment with strong resistance to oxygen plasma, FVMQ fluorosilicone o-rings also feature excellent flexibility, compression resistance, aging and sunlight resistance, and overall wide range of basic chemical resistance.
View some of our other material compatibility ratings with POTASSIUM PHOSPHATE, ALKALINE. 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