Which metals can be bonded to rubber?
Almost any metal can be bonded to rubber
In the metal to rubber bonding process almost any substrate can be used provided that it can withstand the heat and pressures of the rubber moulding process. However, each metal has a different chemical composition that can react to the type of rubber being used.
Expert advice on metal to rubber bonding
An important step is to determine the best metal type and grade as well as the optimal type of rubber to specify for the application. DP Seals can advise on the best rubber material and develop custom compounds with additives to aid metal bonding.
Brassed off
One problematic material is brass, which contains lead that chemically counteracts rubber bonding. The softer, free-cutting brass materials have higher lead content and can be difficult to bond. Better bond strength can be achieved with the lowest possible level of lead content. Substrate preparation is absolutely key along with timely application of two coat bonding agent systems.
Additional support
For further information and advice:
- Download our free rubber to metal bonding guide
- View our rubber to metal bonding page
- Find out more about the rubber to metal bonding process
- Get in touch with our materials technologists.