Custom manufacturing example · High quality square silicone gasket/rubber washer with FDA approved

CUSTOM RUBBER & SILICONE MANUFACTURING

High quality square silicone gasket/rubber washer with FDA approved

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 square silicone gasket can be custom molded for a matching enclosure or other shaped joint. Its outer dimensions, central opening, corner radii, and thickness need to describe the complete sealing path. These features determine whether the gasket is supported around the full perimeter when the mating parts close.

Measure the corners as deliberately as the straight sides. An apparently correct overall size can still produce local lifting if the radius differs from the seat. The width between the inner and outer boundaries should also follow the available contact area, particularly near fasteners or nearby openings.

Choose the silicone formulation for the actual use, including any food-contact requirement, rather than assuming suitability from the general material name. Position the gasket without stretching the corners and inspect all sides before closing the joint. Apply the assembly's intended closing sequence to establish controlled compression. During maintenance, check the corner transitions for tearing and remove deposits from the seat. Replace a distorted gasket with the specified geometry instead of trimming or reshaping it to match a different enclosure.

Material options: Silicone. Custom formulation and color for the intended contact conditions.
Hardness selection: Silicone: 20–80 Shore A. Apply the assembly's intended closing sequence to establish controlled compression.
Custom dimensions: The width between the inner and outer boundaries should also follow the available contact area, particularly near fasteners or nearby openings.
Fit & assembly: An apparently correct overall size can still produce local lifting if the radius differs from the seat.
Use & inspection: During maintenance, check the corner transitions for tearing and remove deposits from the seat.

Photos illustrate structure or material only. A square silicone gasket can be custom molded for a matching enclosure or other shaped joint. 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.