Standard Specification for
General-Purpose, Black Heavy-Duty, and Black Extra-HeavyDuty Crosslinked Polychloroprene Jackets for Wire and
This standard is issued under the fixed designation D 4247; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1.1 This specification covers crosslinked polychloroprene
compounds suitable for use as outer coverings or jackets on
electrical cables for general-purpose, black heavy-duty and
black extra-heavy-duty service.
1.2 These jackets are not recommended for installation at a
a temperature lower than −25°C.
1.3 Whenever two sets of values are presented, in different
units, the values in the first set are the standard, while those in
parentheses are for information only.
2. Referenced Documents
2.1 ASTM Standards:
D 470 Test Methods for Crosslinked Insulations and Jackets
for Wire and Cable2
D 1711 Terminology Relating to Electrical Insulation2
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