Bonded rubber parts for small to medium volumes for a wide range of industries
For applications whereby traditional seals cannot provide an adequate solution, custom seals might be more appropriate. As your custom rubber solutions partner, Martin’s Rubber can work with you to design and develop rubber to bonded parts to meet your specific requirements.
Our rubber moulding facility offers a wide range of processes, to allow us to produce a vast range of products in small to medium volume for many industries. These processes can be undertaken in a range of raw materials, many of which are in stock, backed up by full support from our technical staff and subcontractors.
At Martin’s Rubber, we definitely have an edge when it comes to bonding to materials such as PTFE and carbon fibre. If this is something that is of interest to you, please feel free to get in touch with one of our rubber bonded parts manufacturers by calling us on 023 8022 6330, or simply email us.
What is rubber to substrate bonding?
Martin’s Rubber offer an extensive rubber to substrate bonding capability, with the skills, knowledge and equipment to produce high quality vulcanised rubber products bonded to a variety of materials. We have the technical expertise and knowledge to ensure that we consistently produce high quality finished rubber to bonded parts that you can rely on. Whilst most substrates are metallic, we have increasingly been asked by our customers to bond to other substrates, such as PTFE, PEEK, carbon fibre, and more, in order to ally the properties of rubber with an ever-increasing range of materials.
There are three essential elements that are required for the bonding process: the rubber, the bonding agents and the substrate. Combining components into one part, as opposed to having two or three different components, will provide a much stronger bond than any adhesive, and therefore give a technically superior solution.
How to bond rubber to metal and other substrates
At Martin’s Rubber, we specialise in custom solutions for rubber to substrate bonding applications, in addition to numerous rubber over-moulding applications. When bonding rubber to substrates, rubber materials are vulcanised, meaning that they could be chemically attached to a number of substrate options, such as PTFE, carbon fibre, metal, composite, plastic and more.
The rubber to substrate bonding process involves mechanically bonding rubber to a metal (or other selected material) insert during the moulding process. At the start of the rubber bonding process, the inserts are first degreased, to remove any contaminants from the parts prior to applying the adhesive. Thereafter, a heat activated adhesive is sprayed on to the inserts. After the metals have been prepared, these inserts are then placed into each cavity of the rubber mould as appropriate.
For inserts being encapsulated into the rubber, special chaplet pins are added into the mould to suspend the insert in the mould, therefore allowing the rubber to flow freely around the substrate. It is once the actual inserts are in place, that the usual rubber moulding process can then commence. The adhesive on the metals is activated once the mould is closed and the moulding process begins, allowing the inserts to effectively bond to the rubber as part of the vulcanisation process.
Our rubber bonding solutions deliver excellent adhesion every time. In some cases, the bond between the elastomer and the substrate is actually more durable than the elastomer itself. We welcome unique product designs and can help you to develop your rubber to bonded parts.
Choosing a rubber bonding material
The selection of the polymer base and the associated compound depends mainly on the product specification. A vulcanised bond can be formed using just about any rubber compound. The choice of substrate rests with the component designer, who must consider the necessary strength and durability requirements in its use. For more information about the strength and durability of various materials, please refer to our guide on the physical properties of polymers.
The traditional substrate used in the rubber bonding process is steel, in all its forms and grades, but increasing use is made of aluminium alloys and polyamides to reduce weight. Nevertheless, practically any material can be bonded to rubber, provided that it is able to withstand the heat and pressure of the rubber moulding process.
If you require rubber to bonded parts, please speak to a member of our technical team, who can assist you with selecting the right compound and substrate to meet your design requirements.
Applications where rubber to substrate bonding is used
Rubber to bonded parts are typically used for the isolation of noise and vibration in many automotive and engineering applications. For example, vulcanised rubber bonded parts can be used in valve assemblies, shafts and rollers.
Rubber to bonded parts are suitable for a range of environments and are generally ideal for use in any part requiring the flexible property of rubber and the robustness and stability of a metal.
Other uses of rubber to substrate bonding include:
- Mounts for motors
- Locomotive suspension parts
- General rubber to bonded parts for the rail and transport industries
Find your rubber bonding solution today
If you have any questions about the rubber bonding process, or if you would like to discuss creating a rubber to bonded part, talk to a member of our team today by calling us on 023 8022 6330, or simply email us. Alternatively, fill out our ‘ask an expert’ contact form and our rubber bonded parts manufacturers will be in touch.