Can someone suggest suitable oil which can be heated by immersion heaters and then pumped to maintain cross head temperature around 175 degrees Centigrade.
Most of the oils we use disintegrate and generate carbon deposits which choke the cross head
Thanking you


naren kotecha

Hello Naren

You should also contact your extruder manufacturer and clearly discuss the problem in detail with them first. Be very concerned about the watt density of your heating elements because it may be too high for the heat transfer fluid you are using right now

You may also wish to contact other companies such as:

Duratherm Extended Life Fluids at www.heat-transfer-fluid.com/

and/or Radco Industries Inc.at www.radcoind.com/

Remember however that the fluids must be completely compatible with all the materials in your system, including the flexible tubing to the cross head.

Regards,
Peter J. Stewart-Hay
Principal
Stewart-Hay Associates
www.Stewart-Hay.com

Update

We have also leraned that the following heat transfer fluids have been used with good success;

Aral Farolin U
www.schmierstoff-basics.de/lubricants/co...ent.html?parNum=0207
www.schmierstoff-basics.de/forschung/schmierstoffe

Mobil 600 Series
www.mobil.com/USA-English/Lubes/PDS/GLXX...MOMobiltherm_600.asp
www.exxonmobil.com/Australia-English/Mar...emmobiltherm_600.pdf
www.mobil.com/USA-English/gFM/home_Contact_Us/homepage.asp

Sasol Marlotherm SH
www.marlotherm.com/pdf/MARLOTHERM_SH_GB.pdf
www.marlotherm.com/

Regards,
Peter J. Stewart-Hay
Principal
Stewart-Hay Associates
www.Stewart-Hay.com

Thank you for the valuable information..

naren kotecha