Silicone Sealants retain elastomeric properties from -52 to +176°C.

Press Release Summary:

Chem-Calk 1250 Series oxime/neutral cure silicone sealants feature noncorrosive formulations, are resistant to UV light, have low odor, and can be used with most construction and industrial materials. They are available in 10.3 oz cartridges in clear, white, aluminum, black, bronze, and gray color formulations. High-performance, indoor/outdoor sealants meet ASTM C920; TT-S-00230C; TT-S-001543A; AAMA 808, 803, and 802; and MIL-A-46106 standards and are CARB and SCAQMD compliant.

Original Press Release:

Bostik Introduces Chem-Calk 1250 Series

Middleton, Mass. - Bostik Inc.'s Construction & Industrial (C&I) Business Unit is proud to introduce its Chem-Calk® 1250 Series - high-performance, oxime/neutral cure silicone sealants that retain elastomeric properties from -52º C to 176º C. Chem-Calk 1250 indoor/outdoor silicone sealants deliver superior adhesion to most construction and industrial materials. The non-corrosive formulations have excellent UV resistance and low odor, and feature fast green-strength build and rapid cure.

"Unlike most commodity silicones in the marketplace, our Chem-Calk 1250 Series are not highly extended," says James Downing, Bostik C&I Market Manager - Construction Products. "Because they're not diluted, Chem-Calk 1250 silicone sealants can couple unmatched elastomeric properties with great grab. They routinely outperform the competition - inside and outside - across a wide range of temperatures and over an array of substrates."

Chem-Calk 1250 sealants meet: ASTM C920; TT-S-00230C; TT-S-001543A;
AAMA 808, 803 and 802; and MIL-A-46106 standards. They also are CARB and SCAQMD compliant.

Bostik's Chem-Calk 1250 sealants come in 10.3-ounce cartridges. The sealants are available immediately in clear, white, aluminum, black, bronze and gray color formulations.

Kurt Zintner, Bostik Technical Service Manager - Construction Sealants & Adhesives, says the innovative silicone sealants feature extended service life and help reduce installation fatigue.

"Chem-Calk 1250 silicone sealants are ready to use, easy to gun, and quick to clean up," Zintner adds. "These sealants demonstrate superb hydrolytic stability and, unlike acetoxy-cure silicones, their curing mechanism is not corrosive - so they typically will not compromise the substrate - be it concrete, masonry, metal, plastic or wood."

About Bostik

Based in Middleton, Mass., Bostik Inc. is one of the largest manufacturers of adhesives and sealants in the world. The company operates production facilities and sales offices in dozens of nations across five continents. Bostik's parent company, TOTAL S.A., is a $246 billion-a-year conglomerate with extensive interests in oil exploration, petroleum refining specialty chemicals formulation. Bostik produces adhesives, sealants and coatings for automotive and aircraft interiors, MROs (maintenance/repair operations), marine and transportation markets, industrial and product manufacturing, packaging, disposable nonwovens, and residential and commercial building projects. Bostik's Construction & Industrial (C&I) Business Unit manufactures and markets, among other leading brands, Bostik Home® residential construction and Chem-Calk® commercial construction sealants and adhesives. For more information, please call 888-592-8558 or visit

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