Which of the following means is not usually used to seal flanged connections?

Which of the following means is not usually used to seal flanged connections?

• A. Gaskets
• B. Welding the flanges
• C. O-rings
• D. Sealant compounds

Answer: (B)

Welding the flanges is not typically used as a means to seal flanged connections because flanged connections are generally designed for disassembly and maintenance purposes. Instead, sealing is usually achieved through the use of gaskets, O-rings, or sealant compounds, which provide a compressible barrier between the flange faces to prevent leaks. Using gaskets allows for effective sealing due to their ability to conform to the flange surfaces under pressure. O-rings also serve a similar function, providing a reliable seal, especially in smaller or more specialized flanged joints. Sealant compounds can be applied to enhance the sealing capability and are sometimes used in conjunction with other sealing methods. In contrast, welding creates a permanent joint that does not allow for easy disassembly, which defeats the purpose of flanged design that prioritizes accessibility for repairs and inspections.

Welding the flanges is not typically used as a means to seal flanged connections because flanged connections are generally designed for disassembly and maintenance purposes. Instead, sealing is usually achieved through the use of gaskets, O-rings, or sealant compounds, which provide a compressible barrier between the flange faces to prevent leaks.

Using gaskets allows for effective sealing due to their ability to conform to the flange surfaces under pressure. O-rings also serve a similar function, providing a reliable seal, especially in smaller or more specialized flanged joints. Sealant compounds can be applied to enhance the sealing capability and are sometimes used in conjunction with other sealing methods.

In contrast, welding creates a permanent joint that does not allow for easy disassembly, which defeats the purpose of flanged design that prioritizes accessibility for repairs and inspections.