Material Selection For Mechanical Seals

Abstract

Mechanical seals are used throughout industry to minimize or eliminate leakage in centrifugal pumps, mixers, and other rotating equipment. The ability of a mechanical seal to meet its performance objectives depends upon a wide range of factors involving equipment design, operating conditions, and support systems. Included in this list is the selection of the material of construction of the seal. Mechanical seals are constructed of a wide range of materials including metals, elastomers, and ceramics. Each of these materials plays an important role in the operation of the seal. Seal manufacturers have narrowed the list of available materials through years of successful field experience. Still, the selection of the correct materials remains a critical step in the successful application of a mechanical seal.