ASTM D120-22

Standard Specification for Rubber Insulating Gloves

ABSTRACT
This specification covers manufacturing and testing of rubber insulating gloves for protection of workers from electrical shock. Two types of gloves are provided and are designated as Type I, non-resistant to ozone, and Type II, resistant to ozone. Six classes of gloves, differing in electrical characteristics, are provided and are designated as Class 00, Class 0, Class 1, Class 2, Class 3, and Class 4. The following tests shall be performed: ac proof test; ac breakdown test; ac moisture absorption/proof test; dc proof test; dc breakdown test; ozone resistance test; chemical tests; tensile strength; tear resistance test; and puncture resistance test.
SCOPE
1.1 This specification covers manufacturing and testing of rubber insulating gloves for protection of workers from electrical shock.  
1.2 Two types of gloves are provided and are designated as Type I, non-resistant to ozone, and Type II, resistant to ozone.  
1.3 Six classes of gloves, differing in electrical characteristics, are provided and are designated as Class 00, Class 0, Class 1, Class 2, Class 3, and Class 4.  
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. See IEEE/ASTM SI 10.  
1.5 The following safety hazards caveat pertains only to the test method portion, Sections 16, 17, 18, and 19, of this specification: 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For a specific warning statement, see 18.2.  
1.6 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-Jan-2022
• ICS: 13.260 - Protection against electric shock. Live working
• Technical Committee: F18 - Electrical Protective Equipment for Workers
• Drafting Committee: F18.15 - Worker Personal Equipment

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:D120 −22
Standard Specification for
1
Rubber Insulating Gloves
This standard is issued under the fixed designation D120; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope D297 Test Methods for Rubber Products—Chemical Analy-
sis
1.1 This specification covers manufacturing and testing of
D412 Test Methods forVulcanized Rubber andThermoplas-
rubber insulating gloves for protection of workers from elec-
tic Elastomers—Tension
trical shock.
D573 Test Method for Rubber—Deterioration in an Air
1.2 Two types of gloves are provided and are designated as
Oven
Type I, non-resistant to ozone, and Type II, resistant to ozone.
D624 Test Method for Tear Strength of Conventional Vul-
canized Rubber and Thermoplastic Elastomers
1.3 Six classes of gloves, differing in electrical
characteristics, are provided and are designated as Class 00, D1415 Test Method for Rubber Property—International
Hardness
Class 0, Class 1, Class 2, Class 3, and Class 4.
D2240 Test Method for Rubber Property—Durometer Hard-
1.4 The values stated in SI units are to be regarded as
ness
standard. The values given in parentheses after SI units are
F819 Terminology Relating to Electrical Protective Equip-
provided for information only and are not considered standard.
ment for Workers
See IEEE/ASTM SI 10.
IEEE/ASTM SI 10 American National Standard for Metric
1.5 The following safety hazards caveat pertains only to the
Practice
test method portion, Sections 16, 17, 18, and 19, of this
specification: This standard does not purport to address all of
3. Terminology
the safety concerns, if any, associated with its use. It is the
3.1 Definitions:
responsibility of the user of this standard to establish appro-
3.1.1 color splash—a splash, smear, or streak of contrasting
priate safety, health, and environmental practices and deter-
color evident on the inside or outside surface of the gloves that
mine the applicability of regulatory limitations prior to use.
was deposited during the dipping operation and is vulcanized
For a specific warning statement, see 18.2.
into the glove as part of the homogenous compound.
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
3.1.2 glove cuff roll—the roll or reinforced edge of an
ization established in the Decision on Principles for the
insulating glove at the cuff.
Development of International Standards, Guides and Recom-
3.1.3 halogenation treatment—exposure of the entire glove
mendations issued by the World Trade Organization Technical
surface area to a halogen for the purpose of reducing surface
Barriers to Trade (TBT) Committee.
friction.
2. Referenced Documents
3.1.4 ozone—a very active form of oxygen that may be
2
produced by corona, arcing, or ultraviolet rays.
2.1 ASTM Standards:
3.1.5 user—the employer or entity purchasing the equip-
ment to be utilized by workers for their protection; in the
1
This specification is under the jurisdiction of ASTM Committee F18 on absence of such an employer or entity, the individual purchas-
Electrical Protective Equipment for Workers and is the direct responsibility of
ing and utilizing the protective equipment.
Subcommittee F18.15 on Worker Personal Equipment.This standard replacesANSI
Standard J 6.6, which is no longer available. 3.1.6 working area—all finger and thumb crotches, the palm
Current edition approved Feb. 1, 2022. Published March 2022. Originally
(area between the wrist and the base of the finger and thumb)
approved in 1921. Last previous edition approved in 2021 as D120 – 21. DOI:
and the area of the finger and thumb facing the palm not
10.1520/D0120-22.
2
extending beyond the center line of the crotch. See Fig. 1.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3.1.7 For definitions of other terms, refer to Terminology
Standardsvolume information, refer to the standard’s Document Summary page on
the ASTM website. F819.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D120−22
FIG. 1 Working Area of a Rubber Insulating Glove
TABLE 1 Proof-Test/Use Voltage Relationship
4.4 It is common practice and the responsibility of 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: D120 − 21 D120 − 22
Standard Specification for
1
Rubber Insulating Gloves
This standard is issued under the fixed designation D120; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This specification covers manufacturing and testing of rubber insulating gloves for protection of workers from electrical shock.
1.2 Two types of gloves are provided and are designated as Type I, non-resistant to ozone, and Type II, resistant to ozone.
1.3 Six classes of gloves, differing in electrical characteristics, are provided and are designated as Class 00, Class 0, Class 1, Class
2, Class 3, and Class 4.
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for
information only and are not considered standard. See IEEE/ASTM SI 10.
1.5 The following safety hazards caveat pertains only to the test method portion, Sections 16, 17, 18, and 19, of this
specification: 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, health, and environmental practices and determine the
applicability of regulatory limitations prior to use. For a specific warning statement, see 18.2.
1.6 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:
D297 Test Methods for Rubber Products—Chemical Analysis
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension
D573 Test Method for Rubber—Deterioration in an Air Oven
D624 Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers
D1415 Test Method for Rubber Property—International Hardness
D2240 Test Method for Rubber Property—Durometer Hardness
F819 Terminology Relating to Electrical Protective Equipment for Workers
IEEE/ASTM SI 10 American National Standard for Metric Practice
1
This specification is under the jurisdiction of ASTM Committee F18 on Electrical Protective Equipment for Workers and is the direct responsibility of Subcommittee
F18.15 on Worker Personal Equipment. This standard replaces ANSI Standard J 6.6, which is no longer available.
Current edition approved May 1, 2021Feb. 1, 2022. Published May 2021March 2022. Originally approved in 1921. Last previous edition approved in 20142021 as
D120 – 14a.D120 – 21. DOI: 10.1520/D0120-21.10.1520/D0120-22.
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
Standardsvolume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D120 − 22
3. Terminology
3.1 Definitions:
3.1.1 color splash—a splash, smear, or streak of contrasting color evident on the inside or outside surface of the gloves that was
deposited during the dipping operation and is vulcanized into the glove as part of the homogenous compound.
3.1.2 glove cuff roll—the roll or reinforced edge of an insulating glove at the cuff.
3.1.3 halogenation treatment—exposure of the entire glove surface area to a halogen for the purpose of reducing surface friction.
3.1.4 ozone—a very active form of oxygen that may be produced by corona, arcing, or ultraviolet rays.
3.1.5 user—the employer or entity purchasing the equipment to be utilized by workers for their protection; in the absence of such
an employer or entity, the individual purchasing and utilizing the protective equipment.
3.1.6 working area—all finger and thumb crotches, the palm (area between the wrist and the base of the finger and thumb) and
the area of the finger and thumb facing the palm not extending beyond the center line of the crotch. See Fig. 1.
3.1.7 For definitions of other terms, refer to T
...