Flange Diaphragm Seal

Model 8207
Flush diaphragm with raised face

Availability: Upon Request - OEM Orders

The production process of Items marked as "Upon Request..." starts after receiving the order and usually needs 3 weeks or more.

Seal-Mate group of diaphragm seals come between the pressure measuring instrument and some medias which can damage the instrument or be harmful if they get directly in touch with the instrument. In many industrial processes, it happens a lot that the media cannot or should not get into direct contact with the instrument. Sometimes that is for the sake of keeping the instrument work properly as the media is too viscous and might easily clog the process connections, and sometimes it is for hygienic purposes.

The flexible metal diaphragm of InstruMate seals is made of SS316L by default (otherwise specified by customer). The space between this flexible diaphragm and the instrument process connection should be filled with a filling fluid, chosen in best interest of where the instrument is going to be installed. So the intended pressure is transmitted via the flexible diaphragm to the filling fluid and then via the filling fluid to the pressure instrument.

InstruMate diaphragm seals are vacuum protected and also not sensitive to sudden sharp increase in pressure.

InstruMate raised face flange diaphragm seal model 8207 can be used for corrosive and hot media and also poisonous fluid which is dangerous for environments. InstruMate 8207 with its flush diaphragm and raised face flange is an excellent choice for viscous or crystalizing media. Seal-Mate 8207 is very much suitable for high pressure measurement at high temperatures. InstruMate flange type diaphragm seal model 8207 offers all universal flange standards and sizes for a competitive price thanks to InstruMate special production plant for diaphragm seals.


  • For contaminating or poisonous fluids
  • Process industry and petrochemical industries
  • For hot or viscous media
  • Chemical or water treatment

Special Features

  • Flush type flange diaphragm deal according to standards
  • Variety of dimensions and sizes


Body of Diaphragm Seal: Standard version: Option: Option: Option: Option: SS316 SS316 SS316L Monel 400 Hastelloy C276
Wetted Parts: Standard version: Option: Option: Option: Option: SS316L Monel 400, Hastelloy C276 SS316L, Monel 400, Hastelloy Monel 400 Hastelloy C276
Maximum Permissible Process Temperature in °C: Standard version: Option: Option: Option: Option: 400 400 400 400 400
Flange Sizes per: * ASME B16.5, Raised Face * EN 1092-1, form B * GOST 33259, type B * API 6A, ring-joint groove * JIS B 2220, RF


Data sheets

Flange diaphragm seal – flush diaphragm with raised face
  • EN

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