Custom manufacturing example · Custom high quality flexible silicone rubber seal/gaskets

CUSTOM RUBBER & SILICONE MANUFACTURING

Custom high quality flexible silicone rubber seal/gaskets

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 silicone rubber seal should locate on its mating component without relying on continuous stretch to remain in position. The flexible outline needs defined support and retention so it can be fitted naturally before the joint closes. A seal pulled tight between locating points may recover later and leave a region displaced from the contact path.

Define the profile, thickness, and opening dimensions around the finished assembly. Select the formulation for the medium, temperature, and cleaning conditions. Keep enough supported sealing width around corners and fixing features to preserve the intended contact.

Fit progressively without drawing one end toward the other under tension. Inspect for buckling or an edge that has escaped its seat as the faces come together. During maintenance, compare the recovered outline with the mating geometry. A repeatedly stretched region may reveal a locating mismatch that should be corrected before another seal is installed, rather than choosing a smaller part to make the initial fit feel more secure.

Material options: Silicone. Custom formulation and color for the intended contact conditions.
Hardness selection: Silicone: 20–80 Shore A. A flexible silicone rubber seal should locate on its mating component without relying on continuous stretch to remain in position.
Custom dimensions: Define the profile, thickness, and opening dimensions around the finished assembly.
Fit & assembly: A repeatedly stretched region may reveal a locating mismatch that should be corrected before another seal is installed, rather than choosing a smaller part to make the initial fit feel more secure.
Use & inspection: Inspect for buckling or an edge that has escaped its seat as the faces come together.

Photos illustrate structure or material only. The flexible outline needs defined support and retention so it can be fitted naturally before the joint closes. 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.