Astmc920 Jun 2026

It is important to note what ASTM C920 does cover: it does not apply to sealants intended for use in fuel tanks, swimming pools (unless specifically meeting water-immersion criteria), or hot-poured sealants (which are covered by other standards like ASTM D1190).

ASTM C920 is a standard specification for elastomeric joint sealants, published by ASTM International (formerly known as the American Society for Testing and Materials). The standard provides detailed requirements for the properties, testing, and application of elastomeric sealants used to fill joints and gaps in building construction, particularly in concrete, masonry, and other substrates. astmc920

Evaluating how the material holds up against UV rays, heat, and moisture. It is important to note what ASTM C920