We are able to ship to the UK, Europe and worldwide.

Custom Bubble U Channels

Manufactured to order from sponge and solid materials in a selection of sizes, colours and hardnesses.

Looking for an off-the-shelf product? View our range of bubble U channels available for next working day delivery. 

We can manufacture custom bubble U channels in a selection of sponge and solid materials. The simplistic shape of this profile allows the section to clip over a panel edge in the same way as a clip on edge trim. This section also features a hollow top sealing bulb that can be used to create a watertight seal when another panel or edge closes against it. The hollow centre is designed to aid compression allowing for lower closing forces.

Unlike clip on edge trims with top seals, bubble U channels are not metal reinforced so are suitable for wet environments and food factories. However, they will need to be bonded onto the panel edge using a good quality adhesive.

Our custom rubber profiles are made-to-order based on your projects requirements. Please contact us with your specification.

Material and Dimensions  

Bubble U channels are available from an extensive range of off-the-shelf products, but can also be manufactured to order to suit your projects requirements. To enable us to look at standard or custom profiles, we require the following information.

A: Height
B: Width
C: Panel Gap
D: Internal Diameter
E: Hardness or Density
F: Number of Metres

Diagram of a Bubble U Channel with Dimensions

Our Custom Rubber Seal Manufacturing Process 

We work with a large range of rubber and plastic compounds including EPDM, Natural rubber, Neoprene, Nitrile, Silicone and PVC, many of which are available in either sponge or solid forms. This selection allows us to extrude a profile taking into account any environmental, chemical or temperature demands.

The manufacturing process starts with our specialist toolmakers who turn your sample or technical dimensioned drawing into a tool that can be used to extrude an exact replica of your rubber seal. This extrusion process uses temperature and pressure to push your chosen rubber compound through the tool to extrude the required shape. The extruded seal is then cured using heat to vulcanise and harden the extrusion.

Although the majority of rubber seals are manufactured using a very similar procedure, we understand that your sealing solution may require additional non-standard processes. This could include joining, applying self-adhesive backing, or cutting to desired lengths. Whilst it is possible to do this on-site after production, it is often preferable to do this at the time of manufacture to increase the speed and ease of installation of the final product.

Manufacturing a custom rubber seal can be completed at a relatively low cost with production runs requiring as little as 30 metres. For large production quantities, we have the option of manufacturing sample lengths before going to bulk production. This allows you to look at the finished product and test how it performs. The process of moving from concept to delivery can normally be fulfilled within two to three weeks, depending on the material and complexity of the profile.

Sample or Concept

Technical Drawing



Technical Drawing of a U Channel with Top Bubble

Seal Design Service

Our CAD facilities allow us to work with you in designing the best sealing solution for your project. If your sealing requirements cannot be met by a standard section and you do not have a sample or technical dimensioned drawing, our Design Engineers can design a custom solution to your requirements.

Data Sheets

Standard Bubble U Channels

 The majority of our off-the-shelf products are sold by the metre and are normally available for dispatch on next working day couriers. Our standard bubble U channels are available in a selection of sizes designed to fit different panel thicknesses.

Automotive Seals & Trims 

Although these profiles are designed for automotive use, their unique shape makes them suitable for any other application that requires a similar shaped profile. All of these profiles are sold by the metre.

Other Custom Rubber Seals

Custom rubber seals can be extruded in virtually any shape in most rubber compounds. Different profiles are suitable for different applications and selecting the correct shape, material and hardness is essential to ensure a long term sealing solution. Visit our  Custom Rubber Seal directory to view our range of made-to-order extrusion shapes, gaskets and custom products.

Contact Us With Your Requirements

With over 50 years’ experience within the rubber sealing industry, our team has extensive experience in identifying the best rubber seals, trims, and gaskets for our customers. We are able to work with you to find the best rubber sealing solution for your project.

Complete the form below for a no-obligation free quote. Once received our team will look into whether your requirements can be met by an off-the-shelf product or provide a quotation for a custom made solution. Please include details of the seal you require, including dimensions, materials, hardness, and how many metres you require.

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