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SWR Institute
400 Admiral Blvd
Kansas City, MO 64106

Product Name: DOWSIL Contractors Concrete Sealant
Submitted by: Dow Silicones Corporation
2200 W. Salzburg Rd.
Midland, MI 48686

Test Results
ASTM C 719 Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement [Hockman Cycle]; Pass: Yes Extension: +50% Compression: -50% Substrate: Unprimed mortar, glass; primed anodized aluminum. [1200 OS Primer was applied to anodized aluminum substrates.]
ASTM C 661 Means of Durometer Hardness; Shore A Durometer Rating: 15
Validation Date: 2/4/2013
Expiration Date: 2/3/2018
Lab Details: PRI Construction Materials
6408 Badger Drive
Tampa,  FL 33610
Phone: 813.621.5777
Fax: 813.621.5840