A Flareless bite type fitting consists of a body, a special case hardened ferrule (a one-piece precision machined ferrule) and a nut, put together in a standard way. On assembly, the ferrule "bites" into the outer surface of the tube with sufficient strength to hold the tube against pressure, without significant distortion of the inside tube diameter. Hence, the name "bite type fitting".

As compared to ordinary compression joints, the ferrule holds the pipe in its place to give a proper seal when the nut is screwed on to the body. When it is fully tightened, the case hardened ferrule is pushed slightly in the middle where it acts as a spring. This maintains a continuous friction between the body and nut and which help prevent the nut from loosening under stress and repeated vibration.

A look at some of the common straight flareless bite type fittings:

• Union (METRIC OD Tubes)
• Union (INCH OD & NB Tubes)
• Bulkhead Union (METRIC OD Tubes)
• Bulkhead Union (INCH OD & NB Tubes)
• Male Connector (METRIC OD Tubes X Male ISO Parallel Pipe Thread)
• Male Connector (INCH OD Tubes X Male ISO Parallel Pipe Thread)
• Male Connector (INCH NB Tubes X Male ISO Parallel Pipe Thread)
• Male Connector (METRIC OD Tubes X Male Straight Thread - METRIC)
• Male Connector (METRIC OD Tubes X Male NPT Thread)
• Male Connector (INCH OD & NB Tubes X Male NPT Thread)
• Male Connector (METRIC OD Tubes X Male ISO Tapered Pipe Thread)
• Male Connector (INCH OD & NB Tubes X Male ISO Tapered Pipe Thread)
• Male Connector (METRIC OD Tubes X Male ISO Parallel Pipe Thread)
• With Built - In ELASTOMERIC SEAL
• Male Connector (INCH OD & NB Tubes X Male ISO Parallel Pipe Thread)
• With Built - In ELASTOMERIC SEAL
• Male Connector (METRIC OD Tubes X Male Straight Thread - METRIC)
• With Built - In ELASTOMERIC SEAL
• Female Connector (METRIC OD Tubes X Female ISO Parallel Pipe Thread)
• Female Connector (INCH OD Tubes X Female ISO Parallel Pipe Thread)
• Female Connector (METRIC OD Tubes X Female Straight Thread - METRIC)
• Male Pipe Adaptors (METRIC OD Tubes X Male ISO Parallel Pipe Thread)
• Male Pipe Adaptors (INCH OD Tubes X Male ISO Parallel Pipe Thread)
• Male Pipe Adaptors (METRIC OD Tubes X Male Straight Thread - METRIC)
• Weld Connector (METRIC OD Tubes)