the materials are rubber and plastic
Insulators are materials that prevent electrical flow.
There are a number of materials that make good thermal insulators. Blankets and pockets of air make good thermal insulators for example.
Insulators are materials that don't conduct heat well, or (for electricity), materials that don't let electricity pass through them. In general they are non-metallic materials.
Dielectric meterials are good insulator materials
minecraft
Insulators are materials or substances that do not readily allow the passage of sound or heat. Two examples of insulators are glass and porcelain.
Materials that do not allow heat to pass are insulators. (In real life, there are no perfect insulators, but if not much heat passes, then it is an insulator.)
They are insulators.
normally called insulators
electrical
Superconductors are materials that let current or electricity pass through them. Insulators are materials that don't allow current or electricity to pass through them. Superconductors are mostly all metals. Insulators are wood, plastic, and paper.
The materials those do not permit electric current to flow are called insulators. Paper,organic materials like,diamond,etc. are insulators. for example diamond has such structure that hinders electricity to flow.