METAL SEALS INTERNAL, EXTERNAL & RADIAL PRESSURE SEALING SOLUTION HANDBOOK

Welcome to the Omniseal Solutions’ World, Part of Saint-Gobain Group Saint-Gobain has a rich tradition of excellence that dates back more than 360 years. Today, it is among the world’s top 100 industrial corporations and a leader in the development of light and sustainable construction as well as in the manufacturing of engineered components and materials. In 1665, King Louis XIV signed the letters patent, leading to the creation of Saint-Gobain on an industrial basis. Among the company’s earlier and more notable projects was the manufacturing of 357 mirrors for the Hall of Mirrors in the Palace...

About Omniseal Solutions’ Manufacturing & Engineering Expertise Omniseal Solutions is proud of our more than 65 years of manufacturing expertise, and most of all, customer focus in all the industries supported and protected. Our global team includes engineers who have been supporting customers at the beginning of America’s race to space and man's first footprint on the Moon. The “Omniseal” namesake pays homage to the sealing pioneers (Bill Reid, Charles Tanner and Roy Creath) and their relentless dedication to solve what seemed impossible in space applications and to overcome critical challenges....

Table of Contents Introduction to Saint-Gobain About Omniseal Solutions A Tour of Our Capabilities Introduction to OmniSeal Metal Seals Metal Seal Selection & Considerations Metal Seal Selection Criteria Omniseal Metal Seals Portfolio Market Case Studies Part Number System Part Numbering Calculation Product Data Sheets Product Specifications Seals for Market Standards Engineering Technical Appendix Engineering Services & Capabilities Metal Seals Materials Aerospace Material Specifications Heat Treatment Plating & Coating General Surface Finish Requirements Installation Guidelines Application...

Expertise • Co-development with customers in many critical industries: Aviation, Space, Energy: Carbon-Free, Nuclear & Science Research, Industrial, Semiconductor, Energy: Oil & Gas, and Life Science. • In-house testing • Close cooperation with universities • Development of new production methods and new sealing solutions • Seal diameter range from 5 mm up to 6 m (0.2" up to 236") • Cross sections from 0,79mm up to 12,70mm (0,031" up to 0,500") • Non-standard cross sections available on request • Shaped seals, racetrack, rectangular and other shapes on request • Tailor-made seals per customer...

Introduction to Omniseal® Metal Seals General Metal Seals Properties • Unlimited shelf life (if stored under the correct conditions and/or in appropriate packaging) • Radiation and corrosion resistance • Low load compared to Ring Type Joints (RTJ’s) and similar flat gaskets • High elastic recovery over and extended service life • Temperature from -269°C (-452°F) up to +1000°C (+1832°F) -higher temperatures on request • Pressure from ultra-high vacuum up to 100,000 psi (6894 bar)* • Leakage rates better than 1E-10 mbar*l/s possible with proper design • No explosive decompression issues GENERIC...

Introduction to Omniseal Metal Seals The total spring back or elastic recovery is represented between point “C” and “E”. As a rule of thumb, the spring back varies between 4 and 6% of the original cross section of the seal. It must be clear that as soon as the flange separation equals the total spring back, the seal’s performance is over. Therefore, it is strongly advised to always avoid flange movement or rotation. If this movement or rotation cannot be avoided, it should not exceed 30% of the total spring back. This is called the useful spring back and is influenced by multiple factors: • Acceptable...

Metal Seal Selection & Considerations The selection of the most suitable seal for any service condition is often a delicate trade-off between load and spring back of the seal. The higher the requested load to compress the seal the better the tightness level, whereas the useful spring back of the seal will determine how well this tightness will be maintained with varying temperatures and pressures. For a given seal cross section and seal type, it is generally true that with maximum load the spring back is lowest. And of course, a seal with minimum load will generate the highest spring back. However,...

Metal Seal Selection & ConsiderationsFlange Rotation / Lift-off In all cases, the goal should be to achieve a construction as rigid as possible to overcome movements (lateral and/or axial) caused by varying pressure and/or temperature changes and external loads. Flanges, bolts, and seal can all be considered "spring elements” within the system of which the seal is often a highly non-linear element in its load recovery behavior. Therefore, an assembly where metal-to-metal-contact between flanges occurs after bolting is the most rigid and stable one. After the seal has been compressed in its groove,...

Metal Seal Selection Criteria The table below shows per subject a couple of parameters and questions to be considered before choosing a sealing solution. Note that there are not all possible parameters or questions but a selection of the most common and important ones.

Omniseal Solutions’ resilient metal seals are used in a wide variety of applications where other seals cannot cope with extremes of temperature, pressure, medium or combinations thereof. • Turbo Seal • Aluminum Jacket Spring-Energized Seal • Omega Seal • Axial C-Seal • Axial V-Seal • Boss Seal • Multi-convoluted E-Seal • Shaped Seal • Machined Seal Omniseal Solutions’ resilient metal seals are used in a wide variety of applications where normal seals cannot cope with extremes of temperature, pressure, medium or combinations thereof. Omniseal Solutions specializes in metal seals, serving all markets...