The selection of vacuum suction cups depends on the size, material, and weight of the materials to be handled. Different materials require different suction cup materials. For example, for materials with rough surfaces, silicone or polyurethane suction cups are generally used, with the addition of a sponge suction cup lip to ensure secure adhesion. For smoother materials such as glass, natural rubber or nitrile rubber suction cups are typically chosen. The choice of suction cup material is also influenced by the operating environment's temperature, humidity, and the material temperature.
The most easily damaged components of a vacuum lifting device include: vacuum suction cups, vacuum pumps, and pressure gauges. It is best to have these key components replaced by the original equipment manufacturer if damaged. Proper maintenance of the suction cups and vacuum pump will extend the lifespan of the lifting device.