Tungsten carbide is an inorganic chemical compound which contains numbers of tungsten and carbon atoms.  Tungsten carbide, also known as “cemented carbide”, “hard alloy” or “hardmetal”, is a kind of metallurgic material which contains tungsten carbide powder (chemical formula: WC) and other binder (cobalt, nickel. etc.).

It can be pressed and formed into customized shapes, can be grinded with precision, and can be welded with or grafted to other metals. Various types and grades of carbide can be designed as required for use in application intended, including chemical industry, oil & gas and marine as mining and cutting tools, mould and die, wear parts, etc

Tungsten carbide is widely used in industrial machinery, wear resistant tools and anti-corrosion. Tungsten carbide is the best material to resist heat and fracture in all hard face materials.

Tungsten carbide(TC) is widely used as seal faces or rings with resistant-wearing,high fractural strength,high thermal conductivity, small heat expansion co-efficient.The tungsten carbide seal-ring can be divided into both of rotating seal-ring and static seal-ring.

The two most common variations of tungsten carbide seal faces/ring are cobalt binder and nickel binder.

Tungsten carbide seals is provided to prevent pumped fluid from leaking out along the drive shaft. The controlled leakage path is between two flat surfaces associated with the rotating shaft and the housing respectively. The leakage path gap varies as the faces are subjected to varying external load which tend to move the faces relative to each other.