Spiral Wound Gaskets are the most used semi-metallic Gaskets for high pressure joints. Depending on the flange type and application, a wide variety of configurations of the Spiral Wound Gasket can be used.
Metal Jacketed Gaskets, as the name suggests, consist of a metallic outer shell with either a metallic or nonmetallic compressed fiber filler. The filler material gives the gasket resilience while the metal jacket protects the filler and resists pressures, temperatures and corrosion.
In order to overcome some of the setbacks of the solid polymerized Teflon, gaskets have been produced to take advantage of the resilience of asbestos, rubber and other like materials.
First of all, Style RX is a pressure energized adaptation of the standard style or Gasket. The RX is designed to fit the same groove design as a standard style R, making the joints interchangeable.
PTFE has lower coefficient of friction and it is for this reason that PTFE washers are commonly used to assemble sections of moving parts in machines. This is because it reduces or eliminates lubrication costs and deterioration of various machine parts as a result of friction.