1. Vertical suction: 220KGS

2. Rubber Diameter: 247x167mm

3. Buna-N rubber:  2 years working life

4. With auto air pump and digital display

5. Replaceable battery 3.7V 3600mah X 1PCS

6. With plastic box

Safety Lock Design: An Added Layer of Protection

Safety should never be an afterthought when handling heavy or fragile objects. A well-designed Heavy Duty Vacuum Suction Cup will include some form of safety lock or visual indicator to ensure the cup is securely sealed before lifting begins. This feature is especially critical when operating on vertical planes or at height, where a sudden loss of suction could have costly or dangerous consequences.

Look for Heavy Duty Vacuum Suction Cups with secondary locking levers or vacuum gauges that visually confirm secure attachment. Some advanced models even come with audible alerts if suction drops below safe levels, giving operators an extra layer of control.