Standard Test Method for
Indentation Hardness of Elastomeric-Type Sealants by
Means of a Durometer1
This standard is issued under the fixed designation C 661; 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.
This standard has been approved for use by agencies of the Department of Defense.
click below Astm C 661 – 98 pdf free download
click here Astm C 660 – 81 (Reapproved 1999) pdf free download
