Solvent-based contact cements, such as those based on chloroprene rubber, were traditionally used for this application. They work very well and are available in spray or aerosol versions. However, many users are now reluctant to use them because of emissions regulations, safety concerns or disposal issues.
We have a customer who wants to use an adhesive-backed expanded PTFE gasket strip on a steel substrate. However, the customer wants to be able to remove and reapply the strip without losing adhesion. We do not make ePTFE gasket strips, but we have imported some samples for the customer to test. They are not satisfied with the results. I must admit, I am not surprised. Is there such a thing as a PSA that can be removed and reapplied a number of times without losing adhesion?