Thorium Energy Alliance Talk – Multi-Mate / De-Mate Fittings with Torque Elimination

Tribology is the study of friction, lubrication, and wear. Formally defined, it is the science and technology of interacting surfaces in relative motion. A face seal fitting that transfers torque to the sealing surfaces during the compression that creates the seal, has a fundamental flaw. A tribological study of metal seals shows that this rotation…

In the S.E.M. (top) the severe effects from over tightening on the sealing surfaces of a legacy face seal fitting are shown. In the S.E.M. (lower) using Omnisafe torque elimination, the seal area is not galled. One half turn past finger tight is a worst case scenario. At 5/8 turn past finger tight the gasket…

This is the equipment and procedure used to determine the quantity and size of the particles shed into the process stream, due to galling, as a legacy metal face seal fitting is tightened. Objectives Compare standard metal face seal fitting with the OmniSafe torque suppression fitting over the following criteria: Examine the sealing surfaces of…

Omnisafe works better than any other fitting for semiconductor applications and has been flight qualified and selected for the following aerospace programs. MSL Mars Rover – launch 2011, for the liquid Freon heat rejection system, Omnisafe 3/8” fittings   JPL DAWN –  Xenon Ion Propulsion,  Asteroid Belt, Oct 2007, Omnisafe 1/8” fittings NASA Evolutionary Xenon…

Multi Mate-Demate Record This report details a Multi mate/demate field study at Lawrence Livermore National Laboratory.  Over six years in service, this fitting was mate/demated 1557 times and was still working effectively when decommissioned. This evaluation shows the direct cost savings by avoiding the replacement of fittings that no longer passed leak check in this…

Stainless steel gaskets are required in certain gas systems such as carbon monoxide, ozone, and trimethyl arsenic. Because SS gaskets are harder than nickel, the torque induced problems of sealing and galling are amplified. Due to the SS sealing problems, some companies have specified silver plated SS gaskets to reduce friction and galling. Recently these…