The Advantage of RTJ Flanges Over Other Flange Sealing Surfaces

Release time：2025-08-25    Click：54

　　Compared to other flange types, such as raised face (RF) flange and flat face (FF) flange, RTJ flanges are specifically designed to prevent joint leaks in extreme high-temperature and high-pressure environments.

　　This comes largely from its sealing mechanism – the metal-to-metal compression of the ring gasket and groove creates a secure, blowout-resistant seal.

　　RF and FF flanges, by contrast, are more suitable for lower to moderate pressure applications.

　　RF flanges have a small raised area around the bore, where a softer, flat, or semi-metallic gasket is compressed between the mating flanges to form the seal.

　　FF flanges, on the other hand, are completely flat with no raised area, and they generally use non-metallic gaskets like Viton or EPDM to achieve an effective seal.

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