Custom molded machine EPDM NBR silicone rubber suction cup

A silicone rubber suction cup for a machine should use a formulation suited to its particular operating conditions. EPDM, NBR and silicone represent material options that need separate assessment. Keep the intended contact geometry consistent when comparing how each finished version performs in the machine.

Check the workpiece surface, process residue and cleaning method. The cup also needs to fit its mounting connection and reach the intended pickup position. A change in material should not obscure a simultaneous change in body height or lip shape that affects contact.

Evaluate pickup, movement and release using the actual equipment. Inspect the cup after use for changes at the rim and repeatedly flexed regions. Keep replacement identification tied to the selected compound as well as the size, particularly if several versions share one color. If the working conditions change, review suitability before continuing with the same material. A familiar exterior is not sufficient evidence that the cup remains appropriate for a different surface or process medium.

Material options

Custom silicone or EPDM / NBR formulation; select the compound alongside the mating geometry.

Hardness selection

Silicone: 20–80 Shore A; solid rubber: 30–90 Shore A. Evaluate pickup, movement and release using the actual equipment.

Custom geometry

A change in material should not obscure a simultaneous change in body height or lip shape that affects contact.

Fit evaluation

Keep the intended contact geometry consistent when comparing how each finished version performs in the machine.

Color & OEM

Custom colors; OEM markings outside the suction contact face.

Photos illustrate structure or material appearance only. A change in material should not obscure a simultaneous change in body height or lip shape that affects contact. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.