Starting at $436.12
  • Usually ships in 3-4 weeks



  • Flush diaphragm
  • Small dimensions
  • SST 316L process connection
  • 1/2in or 1/4in NPT female instrument connections
  • No dead spaces
  • Pressure ranges up to 9000 psi


The WIKA L990.36 Flush Diaphragm Seal is a process industry diaphragm seal to combine with Bourdon tube pressure gauges. Intended for corrosive, contaminated, hot or viscous pressure media. The design requires system fill fluid to transmit pressure to the instrument.

Applications for the L990.36 include:

  • For high pressures
  • Pressure measurement of highly viscous or crystallizing pressure media
  • Process industry
  • Painting lines