Factory custom molded cartridge rubber plug with hole

A cartridge rubber plug with hole combines a molded outer fit with a passage through the component. Both features need to align with the cartridge assembly. The outside geometry establishes how the plug seats, while the hole must match the element or flow path intended to pass through it.

Define the purpose of the opening before finalizing its diameter and length. A passage around another component has different fit considerations from an unobstructed opening. Include the location of the hole relative to the outer profile, since an offset can place unintended force on a small tube or adjacent part.

The rubber formulation should suit the cartridge contents and the expected contact duration. Custom hardness and dimensions can then be selected around the required assembly behavior. During installation, support the plug squarely and avoid dragging its inner edge over sharp features. Check the passage after seating to ensure it has not folded or become obstructed. If the cartridge is serviced, inspect both the outer contact surface and the hole rather than looking only at the visible face.

Material options

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

Hardness selection

Solid rubber options: 30–90 Shore A. Check the passage after seating to ensure it has not folded or become obstructed.

Custom geometry

Define the purpose of the opening before finalizing its diameter and length.

Fit evaluation

During installation, support the plug squarely and avoid dragging its inner edge over sharp features.

Color & OEM

Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. The outside geometry establishes how the plug seats, while the hole must match the element or flow path intended to pass through it. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.