The clamp prevents leaks at the joints. The clamp sealing performance, defined as the static pressure and tightness, depends on several factors:
- The material and design of the hose
- The compatibility of the hose bore to the connecting part
- The correct selection and installation of the clamp
- Various mechanical factors such as pressure, temperature, and vibration
Boyd recommends two types of clamps, the ear/crimp clamp and the worm or gear clamp. The ear clamp, shown below in Figure 2, is a metal band that is crimped with a special tool to form a leak-free connection. The worm clamp, Figure 3, consists of a notched band with a screw mechanism to loosen or tighten the clamp.
Each clamp has advantages and disadvantages as determined by your application. See Table 1 for a comparison of features.