ASTM WK72017

    New Specification for Flexible Protective Jackets Made of Modified Asphalt/Butyl Rubber for Use over Thermal Insulation

    (What is a Work Item?)

    Developed by Subcommittee: C16.40 | Committee C16 | Contact Staff Manager


    1. Scope

    1.1 This specification addresses flexible protective jackets made of a modified asphalt or butyl rubber sealing compound for use over thermal insulation. The sealing compound is covered with an outer surface material. Typical applications are insulated ducts, pipe, and equipment. These materials can be used either outdoors or for direct burial applications. 1.2 This jacket material covered by this specification can be installed and used from a low-exposure temperature of -25F (-32C) to a high-exposure temperature of 284F (140C). 1.3 This specification does not address installation methods of this jacketing material. 1.4 Units--The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.5 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.


    sealing compound; composite membrane; outer surface material; modified asphalt; butyl rubber; APO; protective jacket; flexible; UV stable


    This category of protective jackets are widely available in the marketplace and, hence, need an ASTM specification.

    The title and scope are in draft form and are under development within this ASTM Committee.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Gordon Hart


    C16 (21-03)

    Ballot Item Approved as C1916-2021 and Pending Publication