The consequence are extensive calculations with imprecise or assumed values and the involved disadvantages. Also the values for the rigidity of the flange, the screws etc.
With conventional flanged joints many technical data, from which only very few are precisely available during the design state, have to be known for the calculation. With the self-energizing performance of metal O-rings, the system pressure increases the sealing force upon the flange facing.
A spring-back effect is obtained, which pursues a positive force, due to the closing of two flanges and the resultant pressing of the O-ring. As a result originate two virtual contact widths on the sealing surface and a maximum contact potential between sealing and jointing face. The tubing of the seal buckles slightly upon pressing to a predetermined and fixed height. The working of a groove can be omitted for this reason. The sealing is usually placed in an open or closed groove, but can also be installed in a holding device. The metal O-ring is axially pressed between parallel surfaces, which are arranged at right angles to the flow or to the vessel, as typical application. Hollow or solid wire rings can be produced in sizes from 6.4 mm up to 2500 mm outside diameter. Eurosealings offers a variety of heat treatments according to material or customer´s specifications, as the resistance to extension and the spring deflection are partially determined by the thermal subsequent treatment. The flowing of the coating material improves the sealing especially under high pressure and / or vacuum. The O-ring consists of stainless steel or other alloys and can be electroplated with silver, cooper, nickel, gold, lead or other metals or can be coated with Teflon*). The material is shaped and welded to rings or other figurations. General Construction - materials - coating - dimensionsĮurosealings metal-O rings are produced of metal tubes or solid wire material. They neither age in use or during storage.
They are suitable in case of continuous temperatures from 269 degrees centigrade below zero up to 980 degrees centigrade above zero and resistant to radioactive radiation, chlorides, corrosion and other aggressive influences. These static and metallic sealing elements can be applied in ranges of ultrahigh vacuum and up to a pressure of 6800 bar. They even can be used in case of extreme conditions. Eurosealings metal O-rings have been developed as a secure sealing of gases or liquids.
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