Not at all. Glass doesn't conduct electricity. in fact they use glass as an insulator on electric lines.
Since glass isn't a conductor, a glass jar is an insulator.
conductor
No, electricity cannot be put in a jar. Electricity is the flow of electric charge through a conductor, and it requires a complete circuit to flow. You can store electrical energy in a battery or capacitor, but you cannot store the flow of electricity itself in a jar.
Glass is a great conductor of heat but it doesn't hold it long. If you were to stick 212o (Fahrenheit) water into a glass jar it would begin bringing the glass jar to the same temperature as the water on the inside very quickly (equilibrium). It also begins building pressure, so If a lid is on the jar it could potentially explode the jar sending boiling liquid and glass shards everywhere.
If you use a glass jar, it is already an insulator
A glass jar.
The glass jar.
You are unlikely to manage to fix the glass jar to a good enough standard where possible glass chips are not going to happen. Due to the glass pieces being difficult to spot and the danger it poses if ingested, a better idea might be to replace the jar.
Pu,mpkin shape glass jar
You can buy organic yellow mustard in a glass jar at tropicaltraditions.com
The book entitled "The Glass Jar" by Janice Reed Romack was written in 1995.
The homograph for a glass container is "jar," and for to rattle or shake is "jar."