Type 7

The Roten mechanical seal TYPE 7 is designed for external mounting. The spring and sleeve are not in contact with the pumped liquid (foods, chemicals, corrosives, etc.) and unlike some other external seals it can work against internal pressure.
These seals are avaiable in an extensive range of materials including all stainless steels, anticorrosion superalloys, alumina ceramic, hard facings, brazed or massive anticorrosion hard metal, solid silicon carbide, normal and special carbon, filled PTFE, etc.
“O” rings can be supplied in all types of rubber. We always advise the mounting of the seal plate for the conditions under which the seal is operating. It is ideal with high or pulsing counterpressure or with viscous or sticky fluids.