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.
Bloating is any type of air or gas in your stomach or chest. It may lead to burping or flatulence. It may also cause chest pains, abdominal pains and pressure, and more. Bloating is more of a generic term for any type of pressure caused by gas or air. Often times one can feel bloating simply by pressing on the stomach. If it's hard and firm, you may be bloated.