Solvent for Teflon
Solvent for Teflon
(OP)
I have teflon-coated screws (stainless steel, diameter 1 mm) which locked up because of the spring effect of teflon on the threads. The screws are so tight that I need to soften the teflon before untightening. We tried already one and it damages the screw. What solvent do you recommend to this job? The italian subcontractor, who made the teflon film on the screw thread, suggested to try with "nitro" solvent (by that he means an aliphatic solvent used in paint); however, I am not sure he knows much about it. Any further suggestion?





RE: Solvent for Teflon
RE: Solvent for Teflon
RE: Solvent for Teflon
RE: Solvent for Teflon
ChemE, M.E. EIT
"The only constant in life is change." -Bruce Lee
RE: Solvent for Teflon
- look on the MSDS's
RE: Solvent for Teflon
RE: Solvent for Teflon
The lab guys in Valve land warned about this on high-temp tests. It's also a problem for teflon machinists that smoke & people that burn the frying pan with nothing in it
"Polymer Fume Fever: A type of inhalation fever associated with the inhalation of fluoropolymer decomposition products (exhaust effluents, fumes, and gases). It is characterized by temporary flu-like symptoms, which may include fever, chills, and / or, cough. Symptoms may be delayed approximately 4-24 hours following exposure. The severity of effects depends on the extent of overheating and the quantity inhaled. Decomposition products may produce progressive breathing difficulty and later develop into severe pulmonary edema. Edema may be delayed and unlike polymer fume fever, requires medical intervention."
RE: Solvent for Teflon
It's a condition whereby excessive friction between mating parts results in localized welding or the damaging of one or both metallic surfaces by removal of particles from localized areas due to seizure during sliding friction.
I know that in certain elctronic applications some parts are teflon coated because of this problem.