A composition for epihalohydrin vulcanized rubber excellent in heat resistance while keeping good vulcanization rate and store stability, comprising an epihalohydrin robber, a metal soap, an acid acceptor, and a vulcanizing agent, the composition further preferably containing a fatty acid for suppressing vulcanization, or preferably containing an alcohol for accelerating vulcanization. Medicinal products containing the same which are useful in treating pathologies involving a deficit in apoptosis, such as cancer, auto-immune diseases, and diseases of the immune system. In one embodiment, a processing chamber includes a chamber body having a showerhead assembly and substrate support disposed therein. Accordingly, the pressure-sensitive sensor including the pressure-sensitive resistors can accurately detect a pressure in a range between 1 and 20 kPa. By verifying that the hash value was computed using that commitment, the verification mechanism validates the credential and permits access to the service provider.