Hi, does anybody have experiance with sealings been damaged while using Fyrquel EHC? We are using it an have big big problems with the FPM sealings.
Thanx for your help!

check with the Mfg as to what seals are OK some seals will be distroyed with certain oils esters and phospahte being the worse.
bruce

Mikael:

When using Fyrquel you have a very limited selection of seals that you can use. With the aggressive acids produced by this product you can pretty much use only Viton or Ethylene Propylene seals. I have seen some people using Buna N seals that are not compatible and they have had nothing but issues. If you need anymore info I can email to you

This is real simple, read the manual. Fyrquel EHC is a triaryl phosphate ester which is one of the better types of fire resistant fluids. It is compatible with a range of elastomers as given by Surpresta, Forsythe, Chemtura, EPRI and others. Typically EPR, EPDM, viton, fluorocarbons, PETE, PE, PEEK, Kalrez and even nylon are okay. NOT okay are the various types of nitriles which are the cheap elastomers common on mineral oil systems. It is not because they are acidic but because they are good plasticizers with some materials.
They are widely used to make PVC softer. Interestingly EPR should not be used with mineral oils as it swells them. Check your fluid supplier material.

Ken