Overview of Ceramic Seal Materials

Ceramic - Generally a 99.5% aluminum oxide offering excellent wear characteristics due to it's hardness. It is chemically inert and can be applied to nearly any product. Ceramic cannot however handle the thermal shocks (don't drop them) that Ni-resist or 17-4 seats can. They will shatter like a plate if dropped on concrete.

Ceramic: 99.5% pure aluminum oxide (alumina) is preferred. Lower purity grades (typically 85%) are available, but are more subject to chemical attack and thermal shock. If Ceramic faces are not holding up and upgrade to Silicon Carbide (which is in the same family of materials), is a harder alternative.

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