An apparatus for forming an electrically insulating semi-cured or cured in situ polymer containing material over a surface of an electrode can of an electrical device. The apparatus includes an applicator forming a film of curable polymer containing material over the can and means semi- curing or curing in situ the film to form an electrically insulating semi- cured or cured polymer containing material over the surface of the electrode can. The film is formed by contacting a surface of the electrode can with curable polymer containing material dispensed from the applicator and moving the surface of the electrode can contacted with the material over the applicator to distribute the curable polymer containing material over the surface of the electrode can as a film.
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