1.1 This specification covers clear silicone varnished glass fabrics in the form of sheets, rolls, and tapes for use as electrical insulation. 1.2 The product covered by this specification shall be designed to conform to Class 180 electrical i This specification establishes the requirements for two types of clear silicone varnished glass fabrics in the form of sheets, rolls, and tapes for use as electrical insulation. Type A fabrics are used where electrical properties are primarily required