Rubber stopper silicone rubber hole plug ribbed rubber bung

Ribbed rubber plugs use molded engagement features along the inserted sections. Those ribs should match the intended opening and available depth. Custom silicone or other selected rubber geometry can define the body, exposed face, and handling area for the closure.

Check the bore entrance for burrs or debris before fitting. A rib can fold or catch if the bung is started at an angle. The final position should engage the intended portion of the profile without forcing the closure deeper to compensate for an unsuitable size.

Choose the compound for the contents and temperature at the opening. Insert squarely through the designed method and inspect the exposed edge after seating. During removal, use the intended handling region rather than gripping a rib with a sharp tool. Check the engagement features for cuts or lasting distortion before reuse. Replace with the matching rib profile and body dimensions so that the closure returns to its original fit within the hole.

Material options

Custom silicone compound; formulation and geometry developed together.

Hardness selection

Silicone options: 20–80 Shore A. A ribbed rubber bung uses molded engagement features along the inserted section.

Custom geometry

The final position should engage the intended portion of the profile without forcing the closure deeper to compensate for an unsuitable size.

Fit evaluation

Insert squarely through the designed method and inspect the exposed edge after seating.

Color & OEM

Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. A ribbed rubber bung uses molded engagement features along the inserted section. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.