Seal compatible with a biadhesive

[gtsolid]

Good morning sirs,
i have a silane mixed with Tetra-N-Butyltitanate (TnBT). It's provided by a piston moving at a constant speed.
My doubt is on the seal: which kind of material should i use? PE-UHMW should be the best solution for its flexibility, but i think PTFE/Compound is less corroded by the mixture
The seal shape would be this

 

[Compositepro]

UHMW is probably adequate for your application. Test it and see.

 

[gtsolid]

from a theoretical point of view how can be decided the right material?
or is it only based on experience?

 

[Compositepro]

Chemical compatibility is mainly based on extensive past experience that has been published. From this past experience and knowledge of chemistry it is possible to make some predictions. UHMW and Teflon have generally similar resistance to chemicals, although Teflon has much higher use temperature and resistance to very corrosive materials. Both are very non-polar plastics.

 

[MintJulep]

from a theoretical point of view how can be decided the right material?

Use past experience and published data select candidate materials that appear suitable based on factors such as
[ul]
[li]Chemical compatibility[/li]
[li]Swelling[/li]
[li]Strength[/li]
[li]Stiffness[/li]
[li]Friction[/li]
[li]Temperature[/li]
[li]Speed[/li]
[li]Material Cost[/li]
[li]Production Cost[/li]
[li]Quantity[/li]
[/ul]

Test the candidates under your specific set of conditions to identify the best choice for your application.