What material is good for sealing gasket of steam pipe?
if it is a general hydraulic oil, with nitrile rubber, but also the temperature, if the temperature is not in the scope of the use of the material of the sealing ring in.
if it is oil, see what is there, such as phosphate oil, then use the fluorine rubber,
I'm not sure. Let's see what the filter medium is Then determine if the material is water, it is drinking water or water, compared with silica gel drinking water, living water, rubber line,