This section is from the book "A Treatise On Beverages or The Complete Practical Bottler", by Charles Herman Sulz. Also available from Amazon: A Treatise On Beverages.
A good red sealing wax is prepared with the following ingredients :
Shellac, ....600 parts by weight.
Turpentine...600 " "
Gypsum, chalk or magnesia, powdered, . 400 " " Vermillion, . . . . 150 to 300 " " "
Melt the shellac in an iron pot over a low fire and add the other ingredients while constantly stirring.
Ordinary grades of sealing wax are produced by a mixture of resin, powdered gypsum and chalk and coloring matter, melted and stirred together.
A familiar formula for ordinary sealing wax is: Resin, 7 parts by weight, with or without turpentine, 3 parts by weight; chalk powdered, 6 parts by weight; ultramarine, 1 part by weight, or any other suitable coloring matter, as red lead, oxide of iron, bolus, brick dust. For green a mixture of blue and yellow or ultramarine green.
The addition of some turpentine to all formulas makes the sealing wax more elastic and smooth, a preventive against cracking and scaling.
A black bottle sealing wax of elegant appearance is made by melting 4 parts of resin and 2 parts of parafnne, adding 19 parts of lamp black. Instead of this, chrome yellow, ultramarine, (about 5 to 7 parts to 100 parts of the mass) can likewise be taken to produce another color.
To seal the bottles dip the neck of them in the melted mixture, which should not be too hot, turn the bottle a few times, take it out quickly and put aside. They may now be stamped with a sealing stamp if desired.
When the melted sealing wax has become hard, it is easily remelted for further use.
Plaster of Paris also is a suitable means of sealing bottles. Mix it with water to the consistency of jelly, and put of it by means of a spatula enough on top of the cork to cover it, when it will become dry and hard in a short time. By adding some of the aforementioned coloring matters any desired color may be obtained, or an entire substitute for sealing wax may be prepared as follows: Mix 400 grammes plaster of Paris; 600 grammes cement; 300 grammes chalk, powdered; 200 grammes dextrin; coloring matter as desired; and 10 pints varnish. Dip the neck of the bottle into the mixture and let dry.