Product Data Sheet Show all documents

Sika® Injection-203

Elastic PUR-Injection resin for permanent watertight sealing

Sika® Injection-203 is a low viscous, elastic and solvent-free polyurethane injection resin, which cures in both dry and wet conditions to form an elastic, watertight filling and sealing material.

  • Permanently elastic, can absorb limited movement
  • No shrinkage in subsequent dry conditions
  • Due to its low viscosity it can penetrate into narrow cracks starting from 0.2 mm in width
  • Cured Sika® Injection-203 is inert and chemically-resistant
  • Solvent-free, usable in ground water zones
  • At cold temperature (less than 10 °C) Sika® Injection-203 can be accelerated using Sika® Injection-AC20
  • Can be injected as a one component system
Product Data Sheet Show all documents

Usage

  • Sika® Injection-203 is used for permanent watertight sealing with some flexibility of dry, damp or water-bearing cracks and joints in concrete, brickwork and natural stonework
  • Sika® Injection-203 can be used for the injection of the SikaFuko® System (non re-injectable)
  • For use in water-bearing cracks under hydrostatic pressure, preliminary injection shall be made with Sika® Injection-101 RC
 

Advantages

  • Permanently elastic, can absorb limited movement
  • No shrinkage in subsequent dry conditions
  • Due to its low viscosity it can penetrate into narrow cracks starting from 0.2 mm in width
  • Cured Sika® Injection-203 is inert and chemically-resistant
  • Solvent-free, usable in ground water zones
  • At cold temperature (less than 10 °C) Sika® Injection-203 can be accelerated using Sika® Injection-AC20
  • Can be injected as a one component system

Packaging

Component A

10.0 and 20.0 kg

Component B

5.5 and 11.0 kg

Colour

Component A

yellow

Component B

brown

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • German ZTV-ING chapter 3, part 5 (RISS) tested (BASt listed)
  • German KTW drinking water certificate
  • Concrete injection for ductile filling of cracks, voids and interstices (D) according to EN 1504-5:2004, Declaration of Performance 57838186, certified by notified factory production control certification body 0761 and provided with the CE marking.
Product Information

Composition

Solvent free, water reactive 2-component polyurethane resin

Shelf life

24 months shelf life from date of production if stored properly in undamaged, unopened, original sealed packaging.

Storage conditions

Dry storage at temperatures from +5 °C up to +35 °C. Protect from direct sunlight and humidity.

Density

Component A

~0.97 kg/l

Component B

~1.10 kg/l

All values at +20 °C

Viscosity

~180 mPa∙s (mixture, at 20 °C)

 (acc. ISO 3219)
Technical Information

Shore A hardness

 ~22

(EN 868)

Application

Application Information

Mixing ratio

2 : 1 parts by volume
Reaction time table Sika® Injection-203
(ISO 9514)

Dosage*

Material temperature

Sika® Injection-AC20

+5 °C

+10 °C

+20 °C

0.0 %

~ 90 min

~ 90 min

~ 70 min

0.5 %

~ 55 min

~ 60 min

~ 50 min

1.0 %

~ 38 min

~ 40 min

~ 40 min

2.0 %

~ 25 min

~ 25 min

~ 25 min

3.0 %

~ 17 min

~ 19 min

~ 18 min

5.0 %

~ 10 min

~ 12 min

~ 11 min

*   Dosage of Sika® Injection-AC20 in % by weight of Sika® Injection-203 Comp. A

The given data are laboratory parameters and may deviate depending on the object and conditions on site.

Ambient air temperature

+5 °C min. / +35 °C max.

Substrate temperature

+5 °C min. / +35 °C max.
Application steps

SUBSTRATE PREPARATION

Surfaces of cavities and cracks need to be clean, free of loose particles, dust, oil and any other bond-breaking substances. Any dirt must be blown out by clean compressed air.

MIXING

  • Empty Component A and Component B into a mixing vessel and mix slowly and thoroughly for at least 3 minutes (max. 250 rpm) until homogeneous, observing the safety precautions. The containers are supplied according to the required mixing ratio of 2 : 1 parts by volume.
  • Partial quantities can be measured out in separate vessels.
  • After mixing, pour the material into the pump’s feed container, stir briefly and use within the pot life.
  • If the substrate and/or ambient temperatures are below +10 °C, Sika® Injection-AC20 can be added to accelerate the reaction time.

CLEANING OF EQUIPMENT

Clean all tools and application equipment according to the Product Data Sheet for the Sika® Injection Cleaning System

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