SFF : Flush Flanged Diaphragm Seal

Model : SFF
Type : Flush Flanged
Range : -1 to 400 bar
Connection : Flanged
Fill Fluid : Silicon / Fluorolube
Wetted Parts : SS316L / Exotic
Non Wetted Parts : SS316L / Exotic
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Special Features :
Welded Diaphragm
Flush Diaphragm Provided
Easy Flushing
Most Suitable For Slurry & Corrosive Service
Applications :

Diaphragm seals are provided in the instruments like pressure gauges, switches, transmitters in order to isolate the sensing element from the main service due to its corrosive, viscous and sedimented nature and to avoid clogging and solidification. These kind of seals are widely used in the viscous & corrosive services where flushing is required periodically & frequently

Additional information

Standard Version

: Suitable for upto 63mm Nominal Size


: -1 kg/cm2 to 60 kg/cm2

Process Temperature

: -40°C to 200°C or as per fill fluid

Instrument Connection

: 3/8" BSP (F)

Process Connection

: Flange(as per DIN/BS/ANSI/JIS)
Finish 125-250 AARH
32NB(1 1 /4) to 80NB(3") (as required)



Seal Chamber

: AISI 316SS

Fill Fluid

: Silicon Oil – DC 200