Sikaflex, 29 OZ, Gray, Self Leveling Sealant, 1 Component, Self Leveling, Premium Grade, Polyurethane Sealant With An Accelerated Curing Capacity, Used To Seal Horizontal Expansion Joints In Concrete & Cementations Slabs Such As Balconies, Driveways, Sidewalks & More, Requires No Tooling & Cures To A Smooth, Flexible & Durable Finish, Ideal For Larger Projects.