Sto Corp. has launched StoSeal STPE Sealant, a premium, low-odor, isocyanate-free, one-part hybrid sealant with a VOC content of 8 grams per Liter. StoSeal STPE Sealant is durable, flexible, resistant to moisture and weathering, and tested to perform per ASTM C920 class. It meets Federal Specification TT-S-00230C Type II and AAMA 808.3 (Type 1) Exterior Perimeter Sealing requirements and has been tested in accordance with ASTM C1382 for use with EIFS systems. StoSeal STPE Sealant is packaged in 20-ounce sausages that minimize construction waste and provide efficient installation. It is available in eight standard colors with more than 300 custom colors available upon request. StoSeal STPE Sealant can be top-coated with elastomeric coatings to suit most color requirements.