Heavy duty nitrile rubber screw threaded suction cups

Threaded suction cups provide a defined fastening feature for a compatible suction arrangement. The screw connection must match the receiving assembly, while the cup lip must suit the surface being contacted. A heavy-duty description does not establish a particular load capacity or make the thread size a measure of holding force.

For a nitrile design, select the formulation for the actual substances and conditions around the cup. NBR does not imply suitability for every oil, cleaner or outdoor exposure. The mounting hardware should engage without twisting the cup body or obstructing an intended air passage.

Evaluate retention with the complete fitting, contact surface and operating movement. Acceleration or sideways loading can affect the cup differently from a static contact check. During service, inspect the rim and threaded connection separately for damage or loosening. A secure fitting cannot compensate for a cut lip, and an intact lip cannot correct leakage or misalignment at the mounting interface.

Material options

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

Hardness selection

Solid rubber options: 30–90 Shore A. Acceleration or sideways loading can affect the cup differently from a static contact check.

Custom geometry

The screw connection must match the receiving assembly, while the cup lip must suit the surface being contacted.

Fit evaluation

A secure fitting cannot compensate for a cut lip, and an intact lip cannot correct leakage or misalignment at the mounting interface.

Color & OEM

Custom colors; OEM markings outside the suction contact face.

Photos illustrate structure or material appearance only. A secure fitting cannot compensate for a cut lip, and an intact lip cannot correct leakage or misalignment at the mounting interface. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.