SWR Institute
400 Admiral Blvd
Kansas City, MO 64106
816.472.7974
info@swrionline.org

Product Name: DOWSIL™ 123 Silicone Seal
Submitted by: Dow Silicones Corporation
2200 W. Salzburg Road
Midland, MI 48685
k.allore@dow.com
dow.com/construction

Test Results
ASTM C 1523 Standard Test Method for Determining Modulus, Tear and Adhesion Properties of Pre-cured Elastomeric Joint Sealants

Movement, Cohesion & adhesion - 200%

Dry/Room Temperature Loss of Adhesion/Cohesion - None (Pass)

Water Immersion Loss of Adhesion/Cohesion - None (Pass)

Frozen Loss of Adhesion/Cohesion - None (Pass)

Heat Loss of Adhesion/Cohesion - None (Pass)

Artificial Weathering Loss of Adhesion/Cohesion - None (Pass)

Tear Propagation - PT (Partial/Knotty Tear)
ASTM D 412 Standard Test Method for Vulcanized Rubber and Thermoplastic Elastomers - Tension

Ultimate Elongation - Results: 510%
Validation Date: 11/2/2021
Expiration Date: 11/1/2026
Lab Details: Architectural testing
130 Derry Court
York,  PA 17406-8405
Phone: 717.764.7700
Fax: 717.764.4129