You
Choose
Between
RTJ Flanges and RJ Flanges?
Stopping at RTJ flanges and RJ flanges while looking for flanges is very obvious because these are two common options for pipe fittings. But, this stoppage confuses people a lot. They don’t understand how these flanges are different and which one they should choose for their projects.
To make the selection easy, we will discuss each flange type and how they are different in this post.
What Are RTJ Flanges?
An RTJ flange is a type of pipe flange that is commonly used in high-pressure systems and those that contain hazardous materials. It uses a metal ring along with a gasket to create a

tight seal between pipes. The metal ring is usually made from special materials such as steel, stainless steel, or nickel alloys.
RTJ flanges are capable of withstanding high temperatures of up to 1000°F and pressure of up to 1500 psi. They are forged from steel and have a raised face that is designed to seal against another raised face. These flanges are available in various sizes and pressure ratings, making them suitable for a wide range of applications.
What Are RJ Flanges?
RJ flanges are commonly used in applications that require a raised face above the surface of the pipe. This raised face is designed to enhance the seal of the flange when combined with a gasket, leading to higher pressure ratings in specific applications. RJ flanges offer the added advantage of flexibility and can be used in lower-temperature applications as compared to RTJ flanges.
As RJ flanges are not as strong as RTJ flanges, they cannot be used for high-pressure systems. Regarding the material, cast iron or steel is used to manufacture RJ flanges. These flanges have a flat face that seals against another flat face. Typically, the RJ flanges are used in low-pressure applications and they are available in various sizes and pressure ratings, suitable for different applications.
What Can You Differentiate Between RTJ Flanges And RJ Flanges?
The major differences between RTJ flanges and RJ flanges are based on two factors:
1 Pressure rating
2 Face design
● Pressure Rating
They are generally more suitable for high-pressure applications than RJ flanges. This is because RTJ flanges use a metal ring to create a seal between pipes, which can withstand high-pressure levels of up to 1500 psi. On the other hand, RJ flanges rely on a gasket to create a seal between pipes and are typically used in low-pressure applications.
● Face Design
RTJ flanges have a raised face that is designed to seal against another raised face. This design helps provide a better seal when combined with a gasket, which can further enhance the pressure ratings of the flange. RJ flanges, on the other hand, have a flat face that is designed to seal against another flat face. While this design may be more flexible and suitable for lower-temperature applications, it may not provide as strong of a seal as an RTJ flange.
RTJ flanges vs. RJ flanges: What should you choose?
The choice between RTJ and RJ flanges largely depends on the specific application requirements. If your application demands high temperature and pressure conditions, then an RTJ Flange can provide a dependable seal. Conversely, if your project requires flexibility at lower temperatures or does not require high-pressure ratings, then an RF Flange may be a better option.
For the best RF and RTJ flanges in Dubai, visit SWBM.