The TX2021 and TX2022, derived from TX2020, are designed to replace Metal Jacketed Gaskets and unconfined Spiral Wound Gaskets. TX2021/TX2022 Gaskets have a seating load factor ‘y’ equal to 6.20 N/mm2, smaller than Metal Jacketed and Spiral Wound Gaskets (in which “y” factor is between 37,9 and 68,9 N/mm2), also allowing application on irregular surfaces. The stress factor ‘m’ is equal to 2, smaller than Metal Jacketed and Spiral Wound Gaskets (in which “m” factor is between 3,25 and 3,75.
TX2021 is covered with GRAFOIL® 1,6 mm in thickness, while TX2022 is covered with GRAFOIL® 0,8 mm in thickness. TX2023 is designed for small radial space applications: TX2023 consists of a solid grooved metal core with GRAFOIL® facing materials, 0,2 mm in thickness, bonded on both sealing surface faces. Jacketed Metal gaskets are installed on many devices. These seals have wide application for temperature, pressure and chemical compatibility. However, the seals with metal studs Jacketed have critical issues inherent in the construction itself, and these occur at junctions with the peripheral part of them. It happens that in these areas the behaviour of the seal is not regularunder the action of the load transmitted by threaded rods and joint therefore product losses often occur in close proximity of them. This situation is not seen in the case of metal gaskets Jacketed without studs.
VED produces metal seals with cross jacketed joined by brazing to the device. While offeringthe brazing material limited resistance to crushing, VED has further improved the preformed jointstud in the next attack, so that practically no effect of its presence of it in the resistance to crushing and then to the seal. In practice, the seal acts as if there were no studs, offering he same reaction to the load, and then the same resistance to internal pressure, along each stage of development circle.
The seal is made of metal Jacketed well be much more reliable and regular.