Sealants for a ceramic mould

[collon23]

Hello,
I am looking for a high temperature (good to 250 deg. C) spray-on sealer for a ceramic mould, must be tough, scratch-resistant and capable of providing a vacuum seal on the mould surface. I have tried some products but with no success. Any suggestions would be very welcome. Thanks.

 

[unclesyd]

Can you comeback with a little more information?

Without more information as to the particular ceramic material and a little more on what you are trying to achieve ZYP coatings has a number of washes that might work.

http://www.zypcoatings.com/