PVC ball suction
Traditionally, heat is used to expand the air inside the cups, creating a vacuum, but many cups today use suction balls and valves. This allows for easy suction adjustment and negates the requirement for heat, which can make some patients uncomfortable.
The glass used in suction cups is extremely hard-wearing, durable and is easy to sterilise. This is essential when running a hygienic clinic. The glass wall is around 1 mm thick.