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

Product Name: DOWSIL™ 983 Silicone Structural Sealant
Submitted by: Dow Silicones Corporation
2200 W. Salzburg Rd.
Midland, MI 48686
Ahlinka@Dow.com
dow.com/construction

Test Results
ASTM C719 Sealants Under Cyclic Movement [Hockman Cycle];
Pass: Yes
Extension: +25% Compression: -25%
Substrate: Unprimed Glass, Unprimed Anodized Aluminum, Anodized Aluminum [Primed with DOWSIL 1200 OS], Kynar [Primed with DOWSIL Primer C-OS]
Validation Date: 2/5/2026
Expiration Date: 2/4/2031
Lab Details: Interek
130 Derry Court
York,  PA 17406
Phone: 717.764.7700
Fax: 717.764.4129