How many parts has a mechanical seal?
A mechanical seal is composed of the rotary part and stationary part.The rotary part is made up of a seal face,metal parts,springs,a rubber bellow,o-rings and etc, and the stationary part consists of a mating ring,an o-ring or a rubber cup.Each part of mechanical seals are important,especially mechanical seal faces/rings.The seal face and mating ring need materials with resistance to corrosion,to abrasion,to high temperature,high thermal conductivity,low co-effcient of heat expansion.Ningbo Donglian mechanical seal co.,ltd.has been dedicated to research and development of the materials used for mechanical seal faces/rings for almost 30 years.Nowadays alpha silicon carbide/ssic,reaction bonded silicon carbide/sic,tungsten carbide with nickel bound and cobalt and carbon as mechanical seal faces or rings are available.