A simple, inexpensive, pyrex to aluminous porcelain vacuum seal for use in thermal analysis

Abstract

A simple and inexpensive method of making a vacuum-tight seal between a B34 Pyrex glass socket and an aluminous porcelain 525 tube is described.The need for a seal of this type is widely encountered in thermal analysis of compounds that evolve gases at temperatures within the range 1000° to 1350° C.