Water‑swelling Waterstop Strip

Product Features
Self‑sealing by Water‑induced Swelling
Embedded SAP components expand upon contact with water, filling concrete gaps and compacting voids to block water infiltration channels and achieve reliable self‑sealing.
Durable Rubber Matrix with Elasticity
Rubber base delivers excellent resilience, accommodates minor joint deformation, resists breakage and detachment, maintains long‑term sealing performance.
Good Compatibility with Concrete
Embedded directly into concrete construction joints, forms tight bonding with concrete matrix and withstands high water pressure.
Aging‑resistant for Underground Service
Resists underground water corrosion and acid‑alkali environment, stable performance in long‑term damp underground and hydraulic working conditions.
Easy‑to‑install
Simple on‑site fixing before concrete pouring, no complicated auxiliary procedures required.

Instructions for Use
Fix waterstop strip onto concrete joint surface by nailing or pre‑embedding in groove to prevent displacement during concrete pouring.
Pour concrete to embed the strip inside the joint.
When water penetrates the joint, the strip swells and fills gaps for water‑tight sealing.
Warning: Store in dry and moisture‑proof environment, avoid premature swelling by water exposure. Protect before concrete casting.
Main Applications
Waterproofing for construction joints and post‑pouring strips in underground garages and basements
Joint sealing for tunnels, subways and utility tunnels
Hydraulic structures including dams and reservoirs
Seepage prevention for wastewater tanks, pipe culverts and box culverts
Joint sealing for civil‑defense underground projects