A band clamp, also referred to as a screw or web clamp, is a metal band with a cut or pressed screw threading pattern on the inner side of the band. On the other end is a latching mechanism or screw more... ...less

to tighten the hold of the clamp and adjust the seal. A band hose clamp can be used to attach a hose to a nib, pipe, or fitting. Stainless steel band clamps are used to attach accessories, tubes, or hoses to a structure or to hold things in place. These clamps are used in medical applications such as carotid artery clamping or as gastric bands for losing weight.

The size and diameter of this type of clamp, as well as the design of the clamp and latching mechanism, depends on its intended usage and application. In the industrial and manufacturing industries, such as aircraft assembly, a band clamp acts as a restraint to support and hold things in place while minimizing or eliminating vibratory movements in certain types of equipment. The telecommunications and electrical industries use band clamps to attach pole fittings to electrical poles, bundle wires, or hold other electrical components in place. Not only are the clamps used as restraints, but exhaust band clamps are ideal for connecting exhaust pipes together to ensure a tight airless seal.

These clamps can be made out of various types of materials, including plastic, polymer, or metal. Most often, stainless steel is used in the manufacturing industry, but other types of metals can also be used depending on the intended application. The force capacity of the clamp will depend on whether it will be used for high-pressure or low-pressure applications and if it is for restraints, attachments, or connection purposes. This is called the clamping force, which is measured in pounds. There should be even force around the band clamp to ensure that the seal is tight, no leakage is possible, and the attachment is secure.

There are specific standards for manufacturing set by various standard entities that are dependent on where the clamps are applied. The International Standards Organization (ISO) has developed and published standards for testing, usage and application of band clamps in various industries.

Examples of when a band clamp may be used include:

• Clamping the staves of a barrel - the barrel is encircled by the band.

• Clamping stretchers between the legs of a chair.

• Clamping a mitred frame or box - a special type of clamp is often used which has four corner blocks through which the band is threaded.

Clamping pressure is applied either through a mechanical method such as a screw or ratchet mechanism which tightens the band, or through the elastic nature of the band material itself. There are a range of styles of band clamp available for purchase, in particular the type used for framing. In addition to these, many other items may be put to use as a band clamp. These include:

• Ratchet straps

• Car or bicycle inner tubes

• Rubber bands

• Rope or string

• Adhesive tape

These clamps are the logical choices when you need to keep tension on hoses and other equipment in environments where there may be high pressure or stress involved. They are also ideally suited to corrosive environments where the materials you’re working with would destroy other materials.