Keene Building Products KeeneSeal™ 300

VERSATILE, LOW-VOC SEALANT FOR EXTERIOR APPLICATIONS

KeeneSeal 300 is a versatile, one-component building envelope sealant designed for exterior penetrations and flashing applications. Its environmentally friendly formula contains no solvents or isocyanates, resulting in very low VOC emissions and low odor. KeeneSeal 300 offers minimal shrinkage and excellent non-sag performance, making it ideal for vertical or overhead use. This moisture-cure hybrid polymer sealant forms a durable, weather-resistant, and UV-stable bond that withstands temperatures from -40°F to 200°F.

FEATURES AND BENEFITS

• Flexible and durable: Will not shrink or crack over time

• Very low VOCs: Environmentally friendly and compliant with stringent standards

• Solvent- and isocyanate-free: Safe for installers and the environment

• Fast curing: Quick return to service

• Ready to use: No mixing or special preparation required

APPLICATIONS

• Driwall™ Drainable HouseWrap

• Driwall™ HouseWrap

• Window and door flashing

• Plywood

• OSB

• Concrete

• Masonry

• Metal

• Exterior gypsum

• Other common building substrates

SIZES AND PACKAGING 

RESOURCES

• Technical Data Sheet
• Safety Data Sheet