Product Features tesa® 4154 is a filmic masking tape to be used to mask glass and metal during etching. tesa® 4154 withstands diluted acids and alkalis. To achieve sharp definition of colour edges tesa® 4154 is also used for multi-colour painting purposes. tesa® 4154 is a filmic masking tape to be used to mask glass and metal during etching. tesa® 4154 withstands diluted acids and alkalis. To achieve sharp definition of colour edges tesa® 4154 is also used for multi-colour painting purposes.