| abstract |
An apparatus (10) for treating exhaust gas includes a housing (12), a fragile structure (18) resiliently mounted within the housing (12), a housing (12) and a fragile structure (18). And a non-inflatable mounting mat (20) disposed in the gap between the two. The mounting mat (20) includes a melt-eluting glass fiber with a high silica content and (i) about 900 ° C. to hold the fragile structure (18) within the housing (12). Hot surface temperature, at least 10 kPa after 1,000 cycle tests at a gap bulk density of about 0.3 to about 0.5 g / cm 3 , and a gap expansion rate of about 5%, or (ii) a high temperature surface of about 300 ° C. A minimum holding pressure of at least 50 kPa is applied after 1,000 cycle tests at a temperature, a gap bulk density of about 0.3 to about 0.5 g / cm 3 , and a gap expansion rate of about 2%. |