How Compression Fittings Seal Copper or Plastic Tubing?

What is the primary method used by compression fittings to seal copper or plastic tubing?

a.) Beveled sleeve

b.) Compression ring

c.) Compressed beveled gasket

d.) Compressed o-rings located at either end of the fitting's beveled neck

Answer:

Compression fittings used with copper or plastic tubing primarily seal by means of a compression ring. The correct answer is option b.

Compression fittings are a popular choice for connecting copper or plastic tubing in various applications, including plumbing, gas lines, and hydraulics. These fittings work by creating a strong, watertight seal using a compression ring as the main sealing component. When installing a compression fitting, the tubing is first inserted into the fitting, where it meets the compression ring. As the fitting's nut is tightened, it compresses the ring, which in turn presses against the tubing and the fitting's beveled neck. This creates a secure seal, preventing leaks and ensuring a strong connection.

Some compression fittings may also include additional sealing components, such as compressed o-rings or beveled gaskets, to enhance the overall sealing performance. However, the primary sealing mechanism in most cases is the compression ring.

Therefore, option b is correct.