Substitute for vegetable fiber gasket 1

[bopsyseng]

I have an control oil system. Normal pressure is 150 psig and 200degrees F. Oil is used for controlling valves on a Turbine. The oil is always found on the floor (10-15gal over 3 months). Need to find a substitute for vegetable fiber gasket. Anybody has any suggestion. THanks

 

[unclesyd]

Here on is the material that we use in similar situations.
Any gasket supply house should stock this material.

http://www.gore.com/MungoBlobs/436/839/GIS 6575 GR DS.pdf

 

[tothepoint]

UncleSid is right on with his recommendation. Expanded PTFE is a low-stress-to-seal material with relatively high compressive strength and is 100% compatible with just about everything- including petroleum based and synthetic oils. It is expensive though. A comparable material is Inertex SQ-S sheet gaskets. Also 100% expanded PTFE, however not as temperature resistant as the GORE material. At your turbine control valve oil temperatures, it works just fine.

 

[SnTMan]

bopsyseng, there ought to be any number of suitable substitutes, contact Garlock, Flexitallic, Lamons, J.M Clipper (or others) apps engineers. They are all on the Web.

Regards,

Mike

 

[tothepoint]

SnTMan- you might think so, but the typical power station turbine lube oil piping arrangements, and properties of the oils really make this a difficult application for conventional non-asbestos, paper type gaskets. Expanded PTFE works better/longer than other materials evaluated. Been there, done that.