Multi-bellows vacuum cups are made with shallow-fold bellows plus a thin, shallow sealing lip that allows it to conform to flexible packaging and other thin workpieces.
The shallow-fold bellows cannot withstand deep vacuum unless it is fully collapsed. Do not try to use the bellows movement to lift a workpiece or the cup can collapse radially inward.
Our multi-bellows vacuum cups include both internal and external stiffening ring features to reduce the possibility of radial collapse where other brands do not. The stiffening ring also provides stability when the cup is fully collapsed.