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    ASTM D2148 - 13

    Standard Test Methods for Bondable Silicone Rubber Tapes Used for Electrical Insulation

    Active Standard ASTM D2148 | Developed by Subcommittee: D09.07

    Book of Standards Volume: 10.01

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    Significance and Use

    4.1 Self-adhesion is a primary initial property since it affects layer-to-layer bonding. The integrity of the bond can significantly affect the electrical and physical performance of the insulation system. Therefore, the degree of self-adhesion is directly related to apparatus performance.

    4.2 A high degree of self-adhesion is desirable for most electrical applications. In this test, a short unwinding length indicates a high degree of self-adhesion.

    4.3 This test method has been found useful as a quality control test for lot acceptance.

    1. Scope

    1.1 These test methods cover tests for bondable silicone rubber tapes which form a sealed structure either with the application of heat (and pressure if needed) or by the process of auto-adhesion (self-fusing).

    1.2 The methods appear in the following sections:

    Test Method





    3 – 9

          Bond Strength

    10 – 17

          Dielectric Breakdown Voltage

    18 – 25




    32 and 33


    26 – 31


    35 – 39

    1.3 The values stated in inch-pound units are to be regarded as standard, except for °C. The values in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement see 22.1.1.

    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

    D1000 Test Methods for Pressure-Sensitive Adhesive-Coated Tapes Used for Electrical and Electronic Applications

    D1458 Test Methods for Fully Cured Silicone Rubber-Coated Glass Fabric and Tapes for Electrical Insulation

    ICS Code

    ICS Number Code 29.035.20 (Plastic and rubber insulating materials)

    UNSPSC Code

    UNSPSC Code 31201502(Electrical insulating tape)

    Referencing This Standard

    DOI: 10.1520/D2148

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D2148-13, Standard Test Methods for Bondable Silicone Rubber Tapes Used for Electrical Insulation, ASTM International, West Conshohocken, PA, 2013,

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