Material Guide

Material of mechanical seals (code system) according to EN 12756
Primery Seals, Seconday Seals, Constructions Compare
All values are representative values and will vary depending upon vendor and specific grade. Hardness for carbon materials is given in Shore Scleroscope; handness for ceramic materials is given in Vickers. Comparison of Properties of Common Seal Face Materials Strengths and Weaknesses of Common Seal Face Materials.
Typical temperature limits & hardness for secondary seals
Typical temperature limits for secondary seals. Typical hardness range for selected secondary seals
Default API 682 Material Selections
API 4th edition