Mechanical Seal Selection

 The proper selection of a mechanical seal can be made only if the full operating conditions are known. Identification of the exact liquid to be handled is the first step in seal selection.

• Metal parts must be corrosion resistant, usually plated steel, bronze, stainless steel, or Hastelloy.
• Mating faces must also resist corrosion and wear. Carbon, ceramic, silicon carbide or tungsten carbide may be considered.
• Stationary sealing members of Buna, EPR, Viton and Teflon are common.