Custom manufacturing example · Dustproof rubber plug silicone rubber bung cover

CUSTOM RUBBER & SILICONE MANUFACTURING

Dustproof rubber plug silicone rubber bung cover

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

A dustproof rubber plug covers an opening that would otherwise remain exposed during storage, handling or periods of non-use. Its inserted section locates in the hole, while the outer portion can remain accessible for removal. The fit should suit how often the opening needs to be uncovered.

Measure the bore and usable depth, including any shoulder behind the entrance. Choose a head profile that can be reached without interfering with nearby parts. ETOL offers custom plug dimensions, hardness, color and material, including silicone options for review against the intended contact conditions.

Wipe the opening before insertion so the plug does not push accumulated dirt inside. When removed, place it on a clean surface rather than leaving the inserted end among tools or loose debris. Replace a bung with cuts or lasting deformation that prevent it from seating properly. For an application requiring liquid sealing or pressure retention, specify that separately and evaluate the assembled connection; a removable dust cover should not be assigned those functions from appearance alone.

Material options: Custom silicone compound; formulation and geometry developed together.
Hardness selection: Silicone options: 20–80 Shore A. For an application requiring liquid sealing or pressure retention, specify that separately and evaluate the assembled connection; a removable dust cover should not be assigned those functions from appearance alone.
Custom geometry: Measure the bore and usable depth, including any shoulder behind the entrance.
Fit evaluation: ETOL offers custom plug dimensions, hardness, color and material, including silicone options for review against the intended contact conditions.
Color & OEM: Custom colors; OEM identification positioned outside closure contact surfaces.

Photos illustrate structure or material appearance only. A dustproof rubber plug covers an opening that would otherwise remain exposed during storage, handling or periods of non-use. 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.