Potassium alum, also known as potassium aluminum sulfate, is a chemical compound commonly used as a food additive, preservative, and/or a mordant. It is also used in various industries such as tanning, dyeing, and pharmaceuticals.
When rubber is exposed to potassium alum, it can cause the rubber to become brittle, discolor, and break down. Exposure to this chemical can also cause the rubber to swell, soften, and crack. In some cases, the rubber can even dissolve due to the chemical's acidic properties.
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.
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