Starting at $186.97
  • Usually ships in 3-4 weeks



  • Multi-purpose diaphragm seal
  • Threaded process connection
  • Diaphragm welded to upper housing
  • 3,675 psi maximum pressure rating
  • Process industry
  • Large selection of process connections and materials


The WIKA L990.10 Welded Diaphragm Seal is welded to the upper housing which allows the replacement of the lower housing without jeopardizing the integrity of the system fill fluid and installed instrument. The upper and lower housing are bolted together and sealed by use of an O-ring. Process wetted components can be manufactured with solid metallic and nonmetallic materials. The L990.10 is designed for corrosive, contaminated, hot or viscous pressure media.