Diaphragm Seals
- for highly corrosive, aggressive and viscous process media
- for sanitary & hygienic applications
- for clogging media
- for high temperature and pressure procedures
- for special mounting positions
Diaphragm seals, also named Chemical seals, will be used for pressure measuring applications where the instruments shall be protected against the process medium. Seals can be mounted to Bourdon Tube gauges, pressure switches and transmitters / differential pressure transmitters.
The pressure will be transmitted without any time delay from the highly flexible and sensitive seal membrane to the measuring instrument using a transmission fluid.
Seals can be mounted to bourdon tube gauges, pressure switches and transmitters / Differential Pressure transmitters.
Schmierer-Seals are manufactured under highest quality standards with selected materials and coatings, (elastomers, rubbers, high grading stainless steels, Hastelloy, Monel, Inconel, Tantalum, Titanium) for customer specific requirements on process media, pressure, temperature and mounting positions. The connecting part can be made or protected with suitable material, i.e. SS 316L, PP, PVC, PVDF etc. They will run through several test cycles on tightness and shape of the surface.
A repair service for seal systems is part of our standard program; our wide range of different seal types and sizes allows us to do repairs also within short time frames. We can help you to save costs and downturn times and save valuable resources at the same time.


- Corrosive or aggressive media, (Chemical, Oleo chemical and Palm Oil)
- Toxic or hazardous media
- Sanitary processes (Food, Bio, Pharmaceuticals)
- Highly viscous media that crystallizes or polymerizes and leads to clogging
- Non-homogeneous media with particles, (Paper & Pulp)
- Ultra pure process fluids, (Semiconductor, Solar)
- Remote reading requirements
- High temperature, high pressure processes
V120 flanged standard

V185 flush with capillary

V164 Homogenizer

V120 PTFE coated

V121 flanged standard

V185 flush with capillary

V163 Varivent

V120/123 PTFE/PVDF combi

V120/123 flanged, thr conn

V188 flush w ext. front

V166 Neumo

V123 PTFE coated

V121/124 flanged thr conn

V188 flush with extension

V162 chemical clamp

V158 flanged open conn

V165 flush type threaded

V161 chemical, threated

V184 flush type welded

V188 paper & pulp

V190 Inline

Schmierer diaphragm seals can be used together with the Manodamp® mechanical damping technology in the movement
of the pressure gauge.