Hello Sandra,
Use a Gasket material and mesh the compressible layer with SOLSHELL190 elements. You need the solid body of the gasket to be meshable with a Mesh Method of Sweep. You need to mesh a single layer of elements through the thickness, then you can use a Gasket material on that body.
https://forum.ansys.com/forums/topic/element-solsh190/
The Gasket material allows you to define a table of pressure vs closure.
https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v232/en/ans_mat/gask.html?q=gasket
You are navigating away from the AIS Discovery experience