Seal Injection 101

Seal Injection 101 is a fast-reacting polyurethane injection resin that reacts with water and expands into a flexible, closed-cell hydrophobic foam, permanently sealing cracks, joints, and voids in concrete.

Key Features

Reacts instantly with water
Stops running water leaks fast
Low viscosity for deep penetration
Flexible, closed-cell waterproof foam
Expansion up to 40x
Works under hydrostatic pressure
Resistant to fungi and microorganisms

Technical Specifications

Type	Water-Reactive PU Injection Resin
Mix Ratio	98 : 2 (Pre-batched)
Gel Time	~10 seconds
Viscosity	~400 mPa·s @ 25°C
Foam Colour	Yellowish
Tack-Free	~2 hours
Pack Size	11 kg Kit (Part A: 10 kg, Part B: 1 kg)

Chat on WhatsApp Technical Data Sheet

What It Does

Where to Use

Basement and retaining walls - Seal water ingress in below-grade structures
Foundations and raft slabs - Permanent waterproofing of structural foundations
Tunnels and underpasses - Stop active leaks in underground infrastructure
Water tanks and silos - Seal joints and cracks in water-retaining structures
Sewage systems and manholes - Waterproof underground utility structures
Dams, canals and below-grade structures - Heavy-duty waterproofing under hydrostatic pressure

Why Contractors Choose It

Reacts instantly with water - No waiting, starts working on contact
Stops running water leaks fast - Gel time of approximately 10 seconds
Low viscosity for deep penetration - Reaches into the finest cracks and voids
Flexible, closed-cell waterproof foam - Maintains seal even with structural movement
Expansion up to 40x - Fills large cavities and voids efficiently
Works under hydrostatic pressure - Effective even against active water flow
Resistant to fungi and microorganisms - Long-lasting performance in damp environments

Application Process

Clean crack and install packers - Prepare the injection points along the crack line.
Seal packer periphery - Ensure the area around each packer is properly sealed to prevent resin escape.
Mix full unit at low RPM - Combine Part A (10 kg) and Part B (1 kg) using a low-speed mixer.
Inject using PU injection pump - Use a suitable injection pump to deliver the mixed material through the packers.
Start low pressure, increase gradually - Begin injection at low pressure and gradually increase to ensure proper penetration and filling.

Important: Use mixed material immediately. Do not delay after mixing.

Best For

Emergency leakage stoppage - Fast response to active water problems
Active water cracks - Designed specifically for wet conditions
Permanent waterproof sealing - Long-term solution, not a temporary fix
Professional injection contractors - Trusted by experienced waterproofing specialists