Vacuum Furnace Door Seal Grease

Molybdenum disulfide tungsten diselenide and c metal on metal combinations.

Vacuum furnace door seal grease.

Vacuum grease which you should use on the face of the seal and why methods for keeping the seal off the ground and clean during the installation process. Check the o ring vacuum seal on the furnace door for grit and dirt that might cause vacuum leaks. If the pumping system is operating correctly then one of these failure modes is likely the cause. The types of lubricants for vacuum service fall into three general categories.

Figure 11 16 debris ladden door seal. The door seal on a vacuum furnace sees some of the highest wear and tear through normal operation. 1 if the door that houses the lip seal rotates the lip seal should be lubricated with dry graphite powder. Do not grease the lip seal.

The role of lubricants in vacuum furnace seals. How to seal a leaking o ring with grease. The first q a community for vacuum furnace end users and operators. Despite what one may think excess vacuum grease does not aid in sealing and should be removed as it is a getter for shop debris which will interfere with the o ring s ability to seal.

2 if the door has a true autoclave design whereas the locking ring rotates around the stationary door then either vacuum grease and or graphite dust may be utilized. Click here to access the step by step instructions for the o ring or lip seal installation on a rotating vacuum furnace door. Lubricants for vacuum service are a diverse family of highly formulated products. Inspect and wipe clean this seal each time the door is opened after a furnace cycle.

A wet organic or silicone compound based oils and greases b dry lubricants including ptfe teflon and metal dichalcogenide compounds e g. A damaged door seal vacuum furnace leaks and or hot zone contamination. Graphite powder should be used on the lip seal. Here the vapor pressure of the grease should be noted increases greatly with the temperature and should be well below the desired operating pressure.

Reapply a thin coating of vacuum grease as necessary. Wipe the door o ring and flange with a clean lint free rag before closing the door. Clean the chamber door or bottom head flange and lightly grease the o ring with a thin coating of high quality vacuum grease.