Silicone Primer Wacker G790

  • Silicone Primer Wacker G790

In stock

  • Article code: S10351

✔ Increases the adhesion between condensation and addition curing silicone and various surfaces
✔ Functions on metals, wood, various plastics such as PETG
✔ Soluble in white spirit or alcohol

€ 18,25
€ 15,08 Excl. tax

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Product description

Silicone Primer Wacker G790

This primer G790 is suitable for all addition curing silicone (Silicone Addition ...) and condensation curing silicones in our webshop. This primer increases the adhesion between the surface and the silicone poured opon it. 

Most addition curing silicone does not attach to a surface chemically. In order to promote the adhesion a primer should therefore be used.

  • This primer works on:
  • Metal (such as aluminum, lead, iron, steel)
  • Wood
  • and other substrates (such as PETG,Nylon, acrylic, epoxy, PVC)

PLEASE NOTE. The primer has an ignition temperature of 3°C (from 3°C flammable gases will start to evaporate). PLease use caution! 


For proper bonding clean the surface to make it dust and grease free. Use a nonpolar solvent for such as white spirit or turpentine followed by a polar solvent such as acetone.

You can also dissolve the primer in white spirit or alcohol in order to improve the wetting of the surface by the primer.Ratio Primer: solution = from 1: 1 to 1:10

Primers work best in a very thin layer of 1 micrometer. Apply the primer very thin, and bubble free.

The primer builds up a layer using moisture form the system, the surface and surrounding air. Increasing temperature and humidity accelerates this process. At room temperature and 40% humidity you should leave the primer for 1 hour. If it's drier or colder it takes longer.

Do not wait more than 5 hours as the primed layer will start to degrade.

The primer usually instantly provides better adhesion but final results may take up to 4 days and can be enhanced by heating to 100-150°C


At least 1 year. If stored between 10 and 25°C and out of direct sunlight.


H-CodeHazard Statements

H225 Highly flammable liquid and vapour.

H304 May be fatal if swallowed and enters airways.

H315 Causes skin irritation.

H318 Causes serious eye damage.

H336 May cause drowsiness or dizziness.

H361d Suspected of damaging the unborn child.

H373 May cause damage to organs through prolonged or repeated exposure.

H411 Toxic to aquatic life with long lasting effects.

P-Code Precautionary Statements

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.

P233 Keep container tightly closed.

P271 Use only outdoors or in a well-ventilated area.

P280 Wear protective gloves/protective clothing/eye protection.

P273 Avoid release to the environment.

P243 Take action to prevent static discharges.

P301 + P310 IF SWALLOWED: Immediately call a POISON CENTER/ doctor.

P331 Do NOT induce vomiting.

P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

P310 Immediately call a POISON CENTER/ doctor.

P304 + P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.

P312 Call a POISON CENTER/ doctor if you feel unwell.

P302 + P352 IF ON SKIN: Wash with plenty of soap and water.

P332 + P313 If skin irritation occurs: Get medical advice/ attention.

P391 Collect spillage.

P370 + P378 In case of fire: Use extinguishing powder, alcohol-resistant foam or carbon dioxide to extinguish.

P403 + P235 Store in a well-ventilated place. Keep cool.

P501 Dispose of contents/container to waste disposal

Product information

Product information Silicone Primer Wacker G790

Wacker Primer G 790.pdf

Wacker G790 Comparison

Safety Data Sheet Silicone Primer Wacker G790


Specifications for: Silicone Primer Wacker G790

  • Suitable for condensation curing silicone ++
  • Suitable for addition curing silicone ++
  • Suitable for Peroxide curing silicone NA
  • Adhesion to silicone surface +/-
  • Adhesion to metal +
  • View all specifications
  • Adhesion to wood +
  • Adhesion to various plastics +
  • Adhesion to acrylate +
  • Adhesion to (anodised) aluminium +
  • Adhesion to polyamide +
  • Adhesion to Polyester +
  • Adhesion to polyurethane +
  • Adhesion to glass +
  • Adhesion to ceramics +
  • Number of components 1
  • Flashpoint 3 oC
  • Viscosity, kinematic, mm²/s 1
  • Density @20oC g/cm³ 0,76
  • Active substance % 17
  • Color Colorless to yellow clear
  • Solvent Aliphatic hydrocarbon
  • Apply with Brush, Dipping, Spraying
  • Heat treatment necessary? No, but would be preferable
  • Solvable in Alcohol, white spirit
  • Description WACKER® Primer G 790 and WACKER® Primer G 790 Toluene Free are recommended to promote adhesion between liquid rubbers (LSR, XLR® grades) or RTV-2 silicone rubbers and other materials, such as glass-fiber-reinforced plastics and metal fittings
  • Remark Works well on PETG. Works well with condensation curing silicone

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