Sika Plug – Fast-Setting Hydraulic Water-Stopping Mortar

Sika Plug is a rapid-setting, chloride-free hydraulic cement mortar specifically formulated to instantly stop active water leaks, seepage, and pressure-fed cracks in concrete and masonry structures. By simply mixing the pre-packaged powder with clean water, it transforms into an ultra-fast-acting plugging compound that hardens within seconds to seal out water before it can compromise structural integrity.

Key Features & Advantages

​Instant Water-Stopping Power: Rapid initial set time to stem running water under pressure.

​Superior Adhesion: Delivers an exceptional bond to concrete, brick, and stone substrates.

​Low Shrinkage & High Early Strength: Cures rapidly without cracking or significant volume loss, gaining high early compressive strength.

​Easy Application: Single-component system requiring only water; can be easily hand-molded.

​Versatile Use: Suitable for both interior and exterior applications on vertical or horizontal surfaces.

​Recommended Applications

​Basements & Cellars: Stopping negative-side water seepage through foundation walls and floor joints.

​Tunnels & Underground Structures: Sealing active water jets and infiltration cracks in civil infrastructure.

​Water Tanks & Reservoirs: Emergency plugging of water-retaining structures prior to applying comprehensive waterproofing membranes.

​Manholes & Sewers: Repairing concrete pipes and wastewater structures exposed to aggressive environments.

​Anchoring: Fast-grouting of metal, wood, or concrete fixtures and bolts.

​Technical Specifications

​Chemical Base: Hydraulic cement blend (chloride-free)

​Color: Concrete Grey Powder

​Initial Set Time: Approximately 60 to 90 seconds

​Packaging: Available in convenient buckets/pails

​Pro-Application Tip: Chisel the leaking crack or hole into an inverted "V" shape for mechanical anchoring. Mix only small quantities that can be applied immediately by hand, force the plug firmly into the cavity, hold it in place until set, and strike flush.