Abstract: An economical gasket assembly for use between glass-lined flanges of sections of glass-lined vessels, which flanges are subject to greater seating stress due to higher temperatures or pressures, which gasket assembly will maintain a seal but not break the glass on the flange seating surface due to the use of a plurality of flexible, compressible corrugated metal sheets interleaved between harder than normal layers of gasket filler material.

Abstract: The invention is a process for obtaining pure BAEE from the crude reaction mixture of H.sub.2 SO.sub.4 and monoethanolamine. It consists of five major operations, which are:1. Separation of 2-aminoethyl hydrogen sulfate (AEHS) from BAEE.2H.sub.2 SO.sub.4 by mixing the molten crude product with crushed ice and filtering out the resulting AEHS which precipitates;2. precisely neutralizing the acidity in the filtrate with alkali or alkaline earth hydroxides, NaOH to form Na.sub.2 SO.sub.4 and free BAEE;3. extracting the BAEE and small amounts of other amines from this neutralized solution with an alcohol solvent having limited solubility in water, such as n-butanol;4. concentrating the amine extract by precipitating the amines in a separate, liquid layer by saturating the extract with carbon dioxide gas; and5. obtaining pure BAEE from this concentrate by distillation (at atmospheric pressure through an efficient distillation column).