What are the main components of an RTJ Flange?

Release time：2025-08-28    Click：56

　　The main components of an RTJ flange include the ring groove, bolt holes, metallic ring gasket, and flange face.

　　Ring Groove

　　The ring groove is a precision-machined indentation located on the flange’s face. This groove is specifically designed to hold the metallic ring gasket securely in place, ensuring that the gasket can compress adequately when the flange is bolted.

　　Metal Ring Gasket

　　The metal ring gasket, made from materials like soft iron, stainless steel, titanium, or other alloys, sits within the ring groove.

　　When the bolts connecting the RTJ flange are tightened, the flange faces come together, compressing the metallic ring gasket. The gasket deforms slightly, filling any microscopic gaps and creating a strong seal that prevents fluids from escaping the joint.

　　There are specific types of metallic ring gaskets compatible with RTJ flanges, most notably the following:

　　R Type Gaskets

　　Considered the traditional choice for RTJ flanges, these come in oval and octagonal cross-sections and can withstand pressures up to 5000 psi.

　　RX Type Gaskets

　　Adopted from the R Type design, RX gaskets are slightly wider and can be interchanged with R Type gaskets. They are rated for pressures up to 5000 psi and excel in environments where consistent vibration or shock may otherwise compromise the seal.

　　BX Type Gaskets

　　BX Type gaskets are specially engineered for BX-type flanges, meaning, they are not interchangeable with R or RX types. These gaskets can handle up to 20,000 psi, making them ideal for extreme conditions.

　　Bolt Holes

　　Bolt holes are drilled into the flange to accommodate bolts that connect it to other components in the piping system. These holes are strategically placed to provide even distribution of force when the bolts are tightened.

　　Flange Face

　　The flange face is the flat surface where the RTJ flange meets another flange. Its finish and flatness are essential for achieving a good seal with the gasket.

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