Rubber vacuum suction cup with screw/silicone rubber suction cup

A suction cup with screw connects a flexible sealing cup to a supporting component through a threaded feature. The screw provides attachment, while the cup must still sit correctly against the intended surface. A rigid holder that fixes the cup at an unsuitable angle can prevent even lip contact despite a secure threaded joint.

Consider the receiving thread, engagement depth, and available mounting space together with the cup orientation. Tightening should use the appropriate attachment feature without winding the rubber body around the fixing. Check that the screw or holder does not project far enough to interfere with the cup as it deforms.

Assess the complete assembly on the actual surface, including the direction of applied force. A pull through the center and a sideways load at a distance from the surface can produce different behavior. The screw does not define the cup's holding capacity. Inspect both interfaces during service: looseness at the thread and damage to the sealing edge can each undermine performance while the other part of the assembly still looks sound.

Material options

Custom silicone compound; formulation and geometry developed together.

Hardness selection

Silicone options: 20–80 Shore A. Assess the complete assembly on the actual surface, including the direction of applied force.

Custom geometry

Consider the receiving thread, engagement depth, and available mounting space together with the cup orientation.

Fit evaluation

Check that the screw or holder does not project far enough to interfere with the cup as it deforms.

Color & OEM

Custom colors; OEM markings outside the suction contact face.

Photos illustrate structure or material appearance only. A rigid holder that fixes the cup at an unsuitable angle can prevent even lip contact despite a secure threaded joint. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.