Do sealant always ensure perfect adhesion in all conditions?
Sealants will adhere well to clean, dry surfaces which are compatible with the adhesive characteristics of the sealant itself. Teflon, polyethylene and similar non-stick surfaces are by their very nature difficult to seal. On other materials good adhesion can be obtained by thoroughly cleaning surfaces and by choosing the right silicon sealant for the job. Adhesion can be improved by applying a primer beforehand.
