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    ASTM D2902 - 21

    Standard Specification for Fluoropolymer Resin Heat-Shrinkable Tubing for Electrical Insulation

    Active Standard ASTM D2902 | Developed by Subcommittee: D09.07

    Book of Standards Volume: 10.02


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    Abstract

    This specification applies to flexible fluoropolymer resin heat-shrinkable extruded tubing made from tetrafluoroethylene resin, copolymer of tetrafluoroethylene and hexafluoropropylene (FEP), and from perfluoroalkoxy (PFA) resin for use as electrical insulation. This specification covers three types of tubings, namely: Type I tubing, normally made by paste extrusion, and Type II and Type III tubings, normally made by melt extrusion. The finished compound shall be free of all foreign matter other than intended formulation additives. The material shall conform to the specified chemical and physical property requirements such as: (1) restricted shrinkage, (2) specific gravity, (3) longitudinal change, (4) tensile modulus at elongation, (5) volume resistivity, (6) dielectric breakdown voltage, (7) heat resistance, (8) low-temperature flexibility, and (9) melting point. The dimensional requirements after unrestrictive shrinkage such as inside diameter, wall thickness, and stock lengths are specified. The sampling and test methods to determine conformance to the specified requirements are given.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification applies to flexible heat-shrinkable extruded tubing made from tetrafluoroethylene resin, copolymer of tetrafluoroethylene and hexafluoropropylene, and from perfluoroalkoxy resin for use as electrical insulation. This specification excludes crosslinked poly(vinylidene fluoride) and poly(vinylidene fluoride) copolymer which are covered under Specification D3144.

    Note 1: This standard is similar but not identical to IEC 60684-3-240.

    1.2 The values stated in inch-pound units are to be regarded as standard, except temperature, which shall be stated in degrees Celsius. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C618 Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete

    D638 Test Method for Tensile Properties of Plastics

    D1711 Terminology Relating to Electrical Insulation

    D2116 Specification for FEP Resin Molding and Extrusion Materials

    D2671 Test Methods for Heat-Shrinkable Tubing for Electrical Use

    D3144 Specification for Crosslinked Poly(Vinylidene Fluoride) Heat-Shrinkable Tubing for Electrical Insulation

    D3307 Specification for Perfluoroalkoxy (PFA) Resin Molding and Extrusion Materials

    D3636 Practice for Sampling and Judging Quality of Solid Electrical Insulating Materials

    D4895 Specification for Polytetrafluoroethylene (PTFE) Resin Produced From Dispersion

    E176 Terminology of Fire Standards

    IEC Standards


    ICS Code

    ICS Number Code 29.035.20 (Plastic and rubber insulating materials); 83.140.10 (Films and sheets)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D2902-21

    Citation Format

    ASTM D2902-21, Standard Specification for Fluoropolymer Resin Heat-Shrinkable Tubing for Electrical Insulation, ASTM International, West Conshohocken, PA, 2021, www.astm.org

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