Work Item
ASTM WK82934

Revision of C534/C534M-20a Standard Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form


To remove ASTM C795 from the specification. The ASTM C795 is not relevant to flexible elastomeric insulation products as there is no sodium or silicate contents in the elastomeric insulation products and it is not possible to incorporate those raw materials into the product. And to address the leachable chlorides, fluorides, or polyvinyl chloride in Grade 3 of the standard. The task group has had several conversations regarding the standard stating does not contain any leachable chlorides, fluorides, or polyvinyl chloride. The task group after much discussion has come to an agreement on the amount of chloride and fluorides in the Grade 3 product. The changes are in section 1.1, 4.5 and 6.6.


Developed by Subcommittee: C16.22

Committee: C16

Staff Manager: Mary Mikolajewski

Work Item Status

Date Initiated: 07-27-2022

Technical Contact: Biju Thomas

Item: 007

Ballot: C16 (22-04)

Status: Negative Votes Need Resolution

Item: 006

Ballot: C16 (22-04)

Status: On Hold

Item: 005

Ballot: C16 (22-04)

Status: Will Reballot Item