The SEVER C mechanical seal is specially designed for oil refining applications, particulary for injecting wastewater into drill-holes after crude oil separation.
This mechanical seal operates under extremly harsh conditions, as the working flulid contains salt crystals, bentonite, and sand, highly abrasive media that include very hard silicon and other crystals. To meet such demands, the company „Vrska Press“ has developed an exceptionally hard and stable compsote material for the rotating sliding face, while the stationary face is made of tungsten carbide.
Due to the strong sedimenting nature of water, sand, bentonite, and caustic mixture (especially during potentional flow jams) there is a high risk of the mechanical seals’s moving parts becoming blocked. This risk is minimized through the use of a coil spring with extended compressibility.
The seal has an open design (with no pockets), allowing centrifugal force to expel sediment particles away from the sealing surfaces. During operation, the working pressure varies and can reach up to 84 bar, so the design of the mechanical seal must be balanced.