Starting at $612.96
  • Usually ships in 3-4 weeks



  • For pressure instruments from 30in H2O to 750 psi
  • Used in instruments with large displacement actuators
  • Diaphragm electron beam welded to isolator body
  • Furnished with fill/bleed connection
  • Process connection sizes 1/4 to 3 inches
  • Threaded or raised face process connection types
  • Glycerin, silicone, halocarbon, syltherm fill fluid options
  • 316 stainless steel (other options available)
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This product is an accessory for the following products:


Ashcroft Type 700 Series diaphragm seals are designed for use in instruments with large displacement actuators and for instruments ranging from 30 inches H2O to 750 psi. The Type 700 Series is available in many material combinations including 316SS, tantalum, titanium, hastelloy B, hastelloy C-276, and monel. The diaphragm electron beam comes welded to the isolator body. This unit is used for applications requiring an impermeable metallic diaphragm.