As the temperature and pressure in the housing is increased, the joint between the container and the housing sections is sealed by pressing {HEAD ~ the upper and lower sections} of {TAIL ~ the housing} against the container under the influence of forces resulting from different amounts of of thermal expansion of components of the housing 
As the temperature and pressure in the housing is increased , the joint between the container and the housing sections is sealed by pressing { HEAD ~ the upper and lower sections } of { TAIL ~ the housing } against the container under the influence of forces resulting from different amounts of of thermal expansion of components of the housing
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH