Sika Sikaflex-221 - Black - Multi-purpose polyurethane sealant/adhesive - Creates permanent elastic seal - Sandable/paintable - Non-corrosive - 10.1 fl oz

Sikaflex-221 is a versatile non-sag polyurethane sealant/adhesive that cures on exposure to atmospheric humidity, forming a durable elastomer bond.

Suitable for making permanent elastic seals of high adhesive strength on a wide variety of substrates including wood, metals, metal primers and paint coatings (2-c systems), ceramic materials, and plastics.

It is safe and effective, approved by NSF for use in both drinking water systems and food production operations.

Sikaflex-221 comes in a handy cartridge that fits easily on an electric, pneumatic or manual application gun, making accurate placement of adhesive paste quick and easy.

It is resistant to aging, seawater, diluted acids, and caustic solutions.

The product is safe for internal seals and bonding, suitable for permanent seals that you can rely on.