Water-Expanding Butyl Rubber Strip – Adhesive Swelling Tape for Concrete Construction Joints

Product Overview This water-expanding butyl rubber strip provides a flexible, adhesive-backed solution for sealing construction joints and pipe penetrations. Its swelling capacity offers an active barrier against groundwater intrusion.

Features Adhesive backing for easy positioning Swells uniformly when exposed to water Strong chemical and microbial resistance No primer or torching required.

Technical Specifications Material: Butyl rubber with swelling additives Expansion: Up to 300% Adhesion Strength: ≥ 1.5 N/mm Standard Sizes: 15×10mm, 20×10mm, 25×5mm Temperature Range: -20°C to +60°C Water Resistance: ≥ 0.3 MPa.

Applications Water treatment plant joints Pipe and cable penetrations Prefabricated basement slabs Box girder bridge segments.

Customization Options Adhesive-free version for cast-in use Color: Black, red, or custom shades Special shapes for keyhole joints OEM label and branded packaging.