Custom molded silicone rubber vial stopper with hole

A silicone rubber vial stopper with a hole provides an outer closure profile around a defined passage. The opening through the rubber needs to suit its intended purpose, while the stopper body must match the vial neck. These two interfaces should be considered independently before checking their behavior together in the assembled part.

For a passage carrying another component, include that component's diameter, surface finish and position. Check whether installing the stopper changes the passage shape or loads the inserted item sideways. A hole left open provides a different closure condition from a solid stopper, so it should not be treated as a sealed barrier by default.

Custom molding allows the body, passage, hardness and color to be developed for the assembly. Material and cleaning suitability depend on the selected formulation and use; the vial format does not itself establish sterility or suitability for medical use. Inspect both interfaces during replacement and avoid puncturing or enlarging the molded hole with an improvised tool that could leave fragments or an uneven edge.

Material options

Custom silicone compound; formulation and geometry developed together.

Hardness selection

Silicone options: 20–80 Shore A. Check whether installing the stopper changes the passage shape or loads the inserted item sideways.

Custom geometry

For a passage carrying another component, include that component's diameter, surface finish and position.

Fit evaluation

Custom molding allows the body, passage, hardness and color to be developed for the assembly.

Color & OEM

Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. A silicone rubber vial stopper with a hole provides an outer closure profile around a defined passage. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.