Custom manufacturing example · Custom flexible silicone colored plugs/rubber seal stoppers

CUSTOM RUBBER & SILICONE MANUFACTURING

Custom flexible silicone colored plugs/rubber seal stoppers

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

Silicone colored plugs give an opening a recognizable closure while allowing its shape, hardness, and size to be adapted to the equipment. Different colors can help distinguish neighboring ports or separate assembly versions. The identifying color is most useful when it accompanies a clearly defined fit: two plugs that look alike may still require different insertion depths or shoulder positions.

Consider how the plug will be handled throughout use. A closure removed regularly needs an accessible gripping area, whereas an enclosed assembly may place greater importance on keeping the head within the surrounding profile. The portion inside the opening must seat without folding, and the visible head should not conceal incomplete insertion. Color selection can be coordinated with the equipment appearance or a consistent port identification scheme.

For a sealing application, establish the actual contact medium and operating conditions before selecting the silicone formulation. Keep the mating surface free from trapped particles, and inspect the stem after removal from a tight opening. A bright exterior makes identification easier; it does not compensate for damage to the contact surface.

Material options: Custom silicone compound; formulation and geometry developed together.
Hardness selection: Silicone options: 20–80 Shore A. The portion inside the opening must seat without folding, and the visible head should not conceal incomplete insertion.
Custom geometry: Silicone colored plugs give an opening a recognizable closure while allowing its shape, hardness, and size to be adapted to the equipment.
Fit evaluation: Different colors can help distinguish neighboring ports or separate assembly versions.
Color & OEM: Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. The portion inside the opening must seat without folding, and the visible head should not conceal incomplete insertion. 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.