Contact pressure is a force applied to bond two materials together or to achieve a seal. The contact pressure is usually given in Newtons per square meter (N/m²) or in bars (1 bar = 10^5 N/m²).

The contact pressure is used, for example, in mechanics to connect machine parts to one another or to create a seal between two surfaces. With a screw connection, the contact pressure is generated by tightening the screws. Too little or too much force can result in an inadequate connection or material damage.

Contact pressure is also used in electronics to ensure contact between components. When installing computer processors or memory modules, it is important to apply the correct contact pressure to create a secure and stable connection.

Contact pressure is also an important factor in the production of paper, where it serves to compress the paper fibers and create a smooth surface.