Ergoseal 1 is an opaque wax-based, hot-dip applied reservoir core enveloping/encasing barrier coating of approx. 3 mm thick. It imparts mechanical protection all over the essential vapour barrier No.1 film (Saran, polyethylene etc) and No.2 premium thickness aluminium foil wrapped core. The advantage of this material is that it requires only moderately elevated temperature in use. It is removed from the core by hand stripping after making a cut in the tough solid coating.