The Soft-Seal is used in applications with slightly crystallised liquids or liquids with particles. A small seal made of chemically resistant elastomer protects the PTFE separation diaphragm from particles, which prevents leakage that is otherwise common in PTFE membranes. Due to good chemical resistance, a Perfluoroelastomer (FFKM) is used as a Soft-Seal for example.
Overview diaphragm-separated solenoid valves with Soft-Seal
Most valve series of solenoid valves with separating diaphragm are available with a Soft-Seal. An overview can be found on the pages of the diaphragm-separated solenoid valves.