Custom manufacturing example · Small round silicone rubber screw threaded seal plugs

CUSTOM RUBBER & SILICONE MANUFACTURING

Small round silicone rubber screw threaded seal plugs

A custom component for your assembly.

Define the mating surfaces, dimensions and working conditions. ETOL manufactures the part to the agreed design and material.

Factory direct
Made to order
Drawing & sample support

Share the part, its application and your estimated quantity.

Customize the fit, material and finish

Vulcanization workshop illustration with green molding presses and blue collection bins

Material & hardness

Selected for the contact, temperature and movement

Color & finish

Define the visible surfaces and intended color

Shape & dimensions

Develop holes, lips and walls around the mating parts

Mounting & fit

Match the attachment and installation method

Product Overview

Small round silicone screw threaded seal plugs use a threaded profile to engage a matching opening. The thread form, diameter, and engagement length need to correspond to the receiving part. Their compact size makes a controlled start especially important, because misalignment can distort the rubber before the plug reaches its intended position.

Begin with the plug square to the opening and turn it using the designed gripping surface. Resistance at the first turn should prompt a fit and alignment check rather than extra force. The final stopping or sealing surface should be defined separately from the thread, so the installer knows where the plug is intended to seat. Do not treat additional tightening as a universal method for improving the closure.

Custom hardness and dimensions can be selected around the thread geometry and removal frequency. Choose the silicone formulation for the substances and temperature at the opening. Keep the thread and mating part free from particles that can interfere with engagement, and inspect the profile after removal. A damaged thread or distorted head can make a small closure difficult to fit consistently on its next use.

Material options: Silicone. Custom formulation and color for the intended contact conditions.
Hardness selection: Silicone: 20–80 Shore A. Resistance at the first turn should prompt a fit and alignment check rather than extra force.
Custom dimensions: Small round silicone screw threaded seal plugs use a threaded profile to engage a matching opening.
Fit & assembly: The final stopping or sealing surface should be defined separately from the thread, so the installer knows where the plug is intended to seat.
Use & inspection: Keep the thread and mating part free from particles that can interfere with engagement, and inspect the profile after removal.

Photos illustrate structure or material only. Begin with the plug square to the opening and turn it using the designed gripping surface. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.

Choosing a material or hardness? Explore the selection guide →

From part requirements to production

Define the part

Identify key dimensions, mating surfaces and quantity

Review material & tooling

Agree the compound and manufacturing approach

Evaluate the sample

Review the fit and agreed requirements in the assembly

Produce & inspect

Manufacture and check against the approved requirements

Review the intended assembly

Working conditions

Identify temperature, contact fluids and repeated movement.

Material and structure

Consider hardness together with wall thickness and support.

Installation

Check access, mating dimensions and the fitting sequence.

Ordering this custom component

Can the shape be adjusted to my mating parts?

Yes. Show the receiving opening, contact surfaces and clearance limits. We can review the dimensions and retaining features around the intended fit.

Which details should be agreed before tooling?

Agree the critical dimensions, material, hardness, visible surfaces and sample requirements. Explain how the part is installed and which interfaces control its function.

Can a sample help define the replacement?

A sample can help explain the structure. Compare it with the assembly because wear, swelling or compression may have changed its original dimensions.

How is the quotation for this part determined?

The material, part geometry, tooling, quantity and finishing affect the quotation. Include the intended batch size and delivery destination when describing your requirements.

DISCUSS THIS COMPONENT

Describe the part you need.

Share the fit, operating conditions and quantity with our manufacturing team.