Mat Properties. The catalytic converter shell has to be designed in such a way as to provide the required mounting pressure for a given catalyst substrate and a given mat. The mounting pressure of the mat increases exponentially during the compression from its initial bulk density to the final target density.
Sometimes a severely bloated stomach â along with constipation, nausea and vomiting â is due to a bowel obstruction, which is caused by scar tissue or a tumor. When these grow and press against the bowel, the bowels become blocked and hold in fluid and stool.
1 Constipation is a cause of bloating but does not increase either burping or gas symptoms. 2  Constipation can occur when stools are hard and very difficult to pass. 3  Constipation can be painful and your stomach may feel tender to the touch. 4  You might also notice that you feel full and your stomach is somewhat distended.