Custom made rubber suction cups and flat vacuum cups

Flat vacuum cups need their contact faces to reach the workpiece in the intended plane. In a fixture with several cups, small differences in mounting height can let one contact early while another remains clear. Develop the rubber profile with the complete fixture geometry.

Check the fixture with the actual workpiece held at its pickup position. Identify whether each cup can seat across its assigned area without the frame forcing an angle into the body. A flat profile should not be expected to bridge an abrupt step or make up for an incorrectly positioned mounting point.

Where the fixture has several contact positions, inspect the last cup to reach the surface as well as the first. The workpiece should not have to bend unexpectedly to complete the contact pattern. Any permitted flexibility needs to be included in the handling assessment, with the actual part supported as it will be during operation.

Include the workpiece's permitted variation when assessing the arrangement. Its surface may be nominally flat while local features change the available contact. Choose the compound for that surface and the operating conditions, then evaluate the complete holding and release cycle.

During replacement, compare the installed height rather than only the loose cup diameter. A different attachment depth can change the contact plane even when the rubber looks identical. Inspect the first operating contacts after maintenance and correct a fixture mismatch before compensating with additional force or a softer cup.

Material options

Rubber compound options, customized alongside the profile and contact conditions.

Hardness selection

Solid rubber options: 30–90 Shore A. Any permitted flexibility needs to be included in the handling assessment, with the actual part supported as it will be during operation.

Custom geometry

A different attachment depth can change the contact plane even when the rubber looks identical.

Fit evaluation

Identify whether each cup can seat across its assigned area without the frame forcing an angle into the body.

Color & OEM

Custom colors; OEM markings outside the suction contact face.

Photos illustrate structure or material appearance only. In a fixture with several cups, small differences in mounting height can let one contact early while another remains clear. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.