insulative

adj

insulative

adj

Etymology From insulate + -ive.

1

Serving to insulate.

Housed resistors have their wire- wound cores embedded in an insulative material which is enclosed within the housing.1973, The United States Patents Quarterly - Volume 178, page 267:
The charge, that is applied and results in the measured voltage, may or may not pass through the insulative layer to the metallized film.1995, Electrical Overstress Electrostatic Discharge Symposium, Proceedings: 1995, →ISBN:

1 more example

And although charged insulated conductors do appear in many practical, industrial as well as everyday, situations, there is no doubt that charged insulative materials are far more common.2012, Niels Jonassen, Electrostatics, →ISBN, page 132:

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