John Crane 670 High Temperature Performance Metal Bellow Mechanical Seals (Cartridge and Component Solutions) for Chemical Pumps, Sewage Pumps, Pulp Pumps and Vacuum Pumps
 
Operation Parameters
Pressure: -0.1 to 2.0 MPa
Temperature: -75 to 200 ºC
Linear Speed: 30 m/s or less
 
Mediums: oil, liquid hydrogen, acid, alkali, solvents, paper pulp and other medium-and-high-viscosity content under high or extremely low temperatures.
 
Scopes of Application: widely used in petrochemical engineering, oil refining, chemical processing, food and beverage processing, pharmacy, water treatment and paper making.
 
Shaft Size: 30 to 100 mm
 
Structural Features: this seal component is a type of flat gasket mechanical seal, which is reliable and safe. The still structure removes the centrifugal action of the elastomers, which is very suitable for the high-speed operational conditions. Double direction installations. According to the different requirements of installing the seal can be installed as a rotary mechanical seal as well. This mechanical seal has cartridge version and component version, which both suit for high temperature, high speed, medium-and-high viscosity content and light vacuum conditions.
 
Materials
Rotary Ring: Carbon/SIC
Stationary Ring: SIC/TC
Elastomers: Soft Carbon\VITON\EPDM\Kalrez
Springs: SUS316L/AM350/Inconel718
Metal Parts: 2Cr13/SUS316L/4J42/Hastelloy