ASTM D2903-21

Standard Specification for Crosslinked Chlorinated Polyolefin Heat-Shrinkable Tubing for Electrical Insulation

ABSTRACT
This specification covers the manufacture, testing, and property requirements of two types of flexible crosslinked chlorinated polyolefin heat-shrinkable tubing used for electrical insulating purposes. It is supplied in an expanded form and will shrink to the specified diameter when heated. Type I tubing is used for normal operating temperatures, while Type II tubing is used for extended operating temperatures. The finished compound shall be free of foreign matter other than antioxidants, flame retardants, processing aids, crosslinking agents, pigments or other additives as appropriate. The final tubing shall be extruded, crosslinked and then expanded to the required dimensions. Specimens shall be sampled and tested accordingly for the following properties: corrosion by copper mirror and copper contact test; solvent resistance by immersion in Grade JP-4 fuel, lubricating oil, hydraulic fluid, sodium chloride solution, anti-icing fluid, and aviation gasoline; flammability (time of burning and burning distance); water absorption; and tensile strength, ultimate elongation, and weight increase.
SCOPE
1.1 This specification covers flexible crosslinked chlorinated polyolefin heat-shrinkable tubing used for electrical insulating purposes. It is supplied in an expanded form and will shrink to the specified diameter when heated.
Note 1: This standard does not have a similar or equivalent IEC standard.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.2.1 In some cases, temperatures are described in degrees Celsius only.  
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.

General Information

• Status: Published
• Publication Date: 31-Dec-2020
• ICS: 29.035.20 - Plastics and rubber insulating materials
• ICS: 83.140.10 - Films and sheets
• Technical Committee: D09 - Electrical and Electronic Insulating Materials
• Drafting Committee: D09.07 - Electrical Insulating Materials

Standards Content (Sample)

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.
Designation:D2903 −21
Standard Specification for
Crosslinked Chlorinated Polyolefin Heat-Shrinkable Tubing
1
for Electrical Insulation
This standard is issued under the fixed designation D2903; 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 (´) indicates an editorial change since the last revision or reapproval.
3
1. Scope* 2.2 Military Standards:
MIL-H-5606 HydraulicFluidPetroleumBase,Aircraft,Mis-
1.1 This specification covers flexible crosslinked chlori-
sile and Ordnance
nated polyolefin heat-shrinkable tubing used for electrical
MIL-T-5624 Turbine Fuel, Aviation, Grades JP4 and JP5
insulatingpurposes.Itissuppliedinanexpandedformandwill
MIL-L-7808 Lubrication Oil,Aircraft,Turbine Engine, Syn-
shrink to the specified diameter when heated.
thetic Base
NOTE 1—This standard does not have a similar or equivalent IEC
MIL-L-23699 Lubrication Oil, Aircraft, Turbine Engines,
standard.
Synthetic Base
1.2 The values stated in inch-pound units are to be regarded
MIL-A-8243 Anti-Icing and De-Icing Defrosting Fluid
as standard. The values given in parentheses are mathematical
MIL-G-5572 Fuel, Aviation, Grades 100 and 130
conversions to SI units that are provided for information only
4
2.3 Federal Standards:
and are not considered standard.
SS-S-550 Sodium Chloride, Technical, for Water Softening
1.2.1 In some cases, temperatures are described in degrees
Units
Celsius only.
1.3 This international standard was developed in accor-
3. Terminology
dance with internationally recognized principles on standard-
3.1 Definitions:
ization established in the Decision on Principles for the
3.1.1 For definitions pertaining to electrical insulation, refer
Development of International Standards, Guides and Recom-
to Terminology D1711.
mendations issued by the World Trade Organization Technical
3.1.2 For definitions pertaining to fire issues, refer to Ter-
Barriers to Trade (TBT) Committee.
minology E176.
3.2 Definitions of Terms Specific to This Standard:
2. Referenced Documents
3.2.1 chlorinated polyolefin, n—a polymer or polymer
2
2.1 ASTM Standards:
blend based on chlorinated polyolefin(s), chlorinated olefin
D412 Test Methods forVulcanized Rubber andThermoplas-
copolymer(s) or chlorinated polybutadiene polymer(s).
tic Elastomers—Tension
D1711 Terminology Relating to Electrical Insulation
4. Classification
D2671 Test Methods for Heat-Shrinkable Tubing for Elec-
4.1 Type I—Normal operating temperature.
trical Use
4.2 Type II—Extended operating temperature.
D3636 Practice for Sampling and Judging Quality of Solid
Electrical Insulating Materials
5. Ordering Information
E176 Terminology of Fire Standards
D8355 Test Methods for Flammability of Electrical Insulat-
5.1 When ordering to this specification the purchaser must
ing Materials Used for Sleeving or Tubing state the type, class, and size of the tubing required.
6. Materials and Manufacture
1
This specification is under the jurisdiction of ASTM Committee D09 on
6.1 The compound used in the manufacture of this heat-
Electrical and Electronic Insulating Materials and is the direct responsibility of
shrinkable tubing shall be based on chlorinated polyolefin as
Subcommittee D09.07 on Electrical Insulating Materials.
Current edition approved Jan. 1, 2021. Published February 2021. Originally
approved in 1970. Last previous edition approved in 2018 as D2903 – 18. DOI:
3
10.1520/D2903-21. Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
4
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from U.S. Government Printing Office, Superintendent of
Standards volume information, refer to the standard’s Document Summary page on Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://
the ASTM website. www.access.gpo.gov.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2903−21
defined in Section 3, Terminology. The finished compound 11.2 Inspect a quantity of the end item selected at random
shall be free of foreign matter other than antioxidants, flame from each lot in accordance with Practice D3636 and Table 1.
retardants, processing aids, crosslinking agents, pigments or
12. Tests and Retests
other additives as appropriate.
12.1 If the
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2903 − 18 D2903 − 21
Standard Specification for
Crosslinked Chlorinated Polyolefin Heat-Shrinkable Tubing
1
for Electrical Insulation
This standard is issued under the fixed designation D2903; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This specification covers flexible crosslinked chlorinated polyolefin heat-shrinkable tubing used for electrical insulating
purposes. It is supplied in an expanded form and will shrink to the specified diameter when heated.
NOTE 1—This standard does not have a similar or equivalent IEC standard.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.2.1 In some cases, temperatures are described in degrees Celsius only.
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
2
2.1 ASTM Standards:
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension
D1711 Terminology Relating to Electrical Insulation
D2671 Test Methods for Heat-Shrinkable Tubing for Electrical Use
D3636 Practice for Sampling and Judging Quality of Solid Electrical Insulating Materials
E176 Terminology of Fire Standards
D8355 Test Methods for Flammability of Electrical Insulating Materials Used for Sleeving or Tubing
3
2.2 Military Standards:
MIL-H-5606 Hydraulic Fluid Petroleum Base, Aircraft, Missile and Ordnance
MIL-T-5624 Turbine Fuel, Aviation, Grades JP4 and JP5
MIL-L-7808 Lubrication Oil, Aircraft, Turbine Engine, Synthetic Base
MIL-L-23699 Lubrication Oil, Aircraft, Turbine Engines, Synthetic Base
MIL-A-8243 Anti-Icing and De-Icing Defrosting Fluid
1
This specification is under the jurisdiction of ASTM Committee D09 on Electrical and Electronic Insulating Materials and is the direct responsibility of Subcommittee
D09.07 on Electrical Insulating Materials.
Current edition approved May 1, 2018Jan. 1, 2021. Published May 2018February 2021. Originally approved in 1970. Last previous edition approved in 20112018 as
D2903 – 11.D2903 – 18. DOI: 10.1520/D2903-18.10.1520/D2903-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from Naval Publications and Forms Center, 5801 TaborDLA Document Services, Building 4/D, 700 Robbins Ave., Philadelphia, PA 19120.19111-5094,
http://quicksearch.dla.mil.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2903 − 21
MIL-G-5572 Fuel, Aviation, Grades 100 and 130
4
2.3 Federal Standards:
SS-S-550 Sodium Chloride, Technical, for Water Softening Units
3. Terminology
3.1 Definitions:
3.1.1 For definitions pertaining to electrical insulation, refer to Terminology D1711.
3.1.2 For definitions pertaining to fire issues, refer to Terminology E176.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 chlorinated polyolefin, n—a polymer or polymer blend based on chlorinated polyolefin(s), chlorinated olefin copolymer(s)
or chlorinated polybutadiene polymer(s).
4. Classification
4.1 Type I—Normal operating temperature.
4.2 Type II—Extended operating temperature.
5. Ordering Information
5.1 When ordering to this specification the purchaser must state the type, class, and size of the tubing required.
6. Materials and Manufacture
6.1 The compound used in the manufacture of this heat-shrinkable tubing shall be based on chlorinated polyolefin as defined in
Section 3, Terminology. The finished compound shall be free of foreign matter other than antioxidants, flame retardants, processing
aids, crosslinking agents, pigments or other additives as appropriate.
6.2 The tubing shall be extruded, crosslinked and then expanded to the re
...