Custom manufacturing example · Flexible rubber usb end cap waterproof silicone cap

CUSTOM RUBBER & SILICONE MANUFACTURING

Flexible rubber usb end cap waterproof silicone cap

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 flexible rubber end cap covers a USB connection area with a silicone part matched to its housing. The custom shape should match the intended connector or surrounding housing, since USB interfaces can have different outlines and recess depths. The space beside the connection also matters when the cover needs to be removed regularly.

Check that the cap can be gripped without pulling on an adjacent cable or scraping against another port. A cover that fits the empty enclosure may become awkward once neighboring connections are occupied. Its insertion depth should protect the intended opening without pressing against delicate internal features. Size and color can be tailored to the device arrangement.

Trial removal and replacement with the surrounding equipment assembled. The waterproof title is not a numerical protection rating, so any required water exclusion needs evaluation with the complete port enclosure. Keep dirt off the cap before refitting and never push a particle into the connector under the rubber. Replace a split or loose edge before it allows the cover to fall away during ordinary handling.

Material options: Custom silicone compound; formulation and geometry developed together.
Hardness selection: Silicone options: 20–80 Shore A. Trial the chosen hardness through removal and refitting with the surrounding equipment assembled.
Custom geometry: The custom shape should match the intended connector or surrounding housing, since USB interfaces can have different outlines and recess depths.
Fit evaluation: Check that the cap can be gripped without pulling on an adjacent cable or scraping against another port.
Color & OEM: Custom colors; identification clear of connectors and removal features.

Photos illustrate structure or material appearance only. The custom shape should match the intended connector or surrounding housing, since USB interfaces can have different outlines and recess depths. 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.