Calcium sulfate, also known as gypsum, is a naturally occurring mineral and a commonly used industrial product. It is used in a variety of industries, including paper, food, and glass production, as a filler or for soil stabilization. It is also used in the production of cement and plaster of Paris.
When rubber is exposed to calcium sulfate, the calcium ions present can cause a chemical reaction with the rubber molecules. This can lead to the rubber becoming brittle, cracked, and weakened. In extreme cases, the rubber may be completely destroyed. Additionally, exposure to calcium sulfate can cause discoloration, brittleness, and a decrease in rubber performance and durability.
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 CALCIUM SULFATE. 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