ASTM D4969-97 - 10.11.1997
 
1. Scope

1.1 This specification covers glass fabric coated on both sides with PTFE.

1.2 The PTFE-coated glass fabric is for electrical, chemical, and mechanical uses.

1.3 The PTFE-coated glass fabric of this specification does not pertain to structural fabric nor materials used for laminates.

1.4 The values stated in SI units as detailed in Practice E380 and the practices of E380 incorporated herein, are regarded as standard.

 
2. Referenced Documents

D149-25

Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies

D257-14(2021)e1

Standard Test Methods for DC Resistance or Conductance of Insulating Materials (Includes all amendments and changes 5/6/2021).

D374-99

Standard Test Methods for Thickness of Solid Electrical Insulation

D579-09

Standard Specification for Greige Woven Glass Fabrics

D618-21

Standard Practice for Conditioning Plastics for Testing

D4441-20(2025)

Standard Specification for Aqueous Dispersions of Polytetrafluoroethylene

IEEE/ASTM SI-10

Standard for Use of the International System of Units (SI): The Modern Metric System

ISO 13000–1 and 2

Plastics--Polytetrafluoroethylene (PTFE) Semi-Finished Products

D751-26

Standard Test Methods for Coated Fabrics

D123-23

Standard Terminology Relating to Textiles

D737-18(2023)

Standard Test Method for Air Permeability of Textile Fabrics

D902-12

Standard Test Methods for Flexible Resin-Coated Glass Fabrics and Glass Fabric Tapes Used for Electrical Insulation (Withdrawn 2020)

D883-26b

Standard Terminology Relating to Plastics (Includes all amendments and changes 8/24/2026).

D3892-15(2020)

Standard Practice for Packaging/Packing of Plastics

D1424-25

Standard Test Method for Tearing Strength of Fabrics by Falling-Pendulum (Elmendorf-Type) Apparatus