PPG SigmaZinc 105 Primer

Part A: UN1263 (Class: 3, Pk Grp: III), Part B: UN1263 (Class: 3, Pk Grp: II)
A two component, quick drying, anti-corrosive zinc epoxy primer for use onto suitably prepared steel.
Available in 20 Litres
£446.38 £371.98
In stock
Product Description

PPG Sigmazinc 105 is a two component, quick drying, anti-corrosive zinc epoxy primer for use onto suitably prepared steel.

Best Uses

PPG Sigmazinc 105 is best used within the infrastructure and power sectors for use on steel at risk of corrosion.

  • Excellent anti-corrosive properties
  • Quick drying, can be over-coated after 25 minutes
  • Excellent application properties
  • Cure at temperatures down to -5°C


Clean steel to blast cleaned to ISO-Sa2.5, blasting profile 40-70 microns. Able to be applied down to -5°C provided that the substrate is free from ice and dry. Ensure the base and hardener tins are above 15°C otherwise extra thinner may be required to obtain viscosity. Thinner should be added after mixing the components.

Technical Details


This product is the topcoat for the following systems:

  • ISO 12944-6 Systems For Steel - C4 High at 50 microns DFT

Technical Info

Components: Two Components
Type: Epoxy
Finish: Flat
Stock Colours: Grey
Tintable: No
VOC Content: 408.0 g/l
Volume Solids: 65 +/1 2%
Suitable Substrates: Steel: blast cleaned to ISO-Sa2 1/2. blasting profile 40 -70 microns (1.6 - 2.8 mils)
Application Method: Brush, Roller, Airless Spray or Air Spray
Theoretical Coverage: 13.0m2 per litre for 50 microns
Wet Film Thickness (WFT):  
Dry Film Thickness (DFT): 50 - 80 microns depending on system
Induction Time: -
Pot Life: 4 hours at 20°C
Touch Dry: 10 minutes at 20°C
Overcoatable: After minimum 25 minutes to maximum 12 months at 20°C
Dry to Handle: 40 minutes at 20°C
Cleaner / Thinner: Cleaner: PPG Thinner 90-53, Thinner: PPG Thinner 21-06
Shelf Life: At least 12 months when stored cool and dry
Packaging: Available in 20 Litres

The manufacturers data sheets are available for download from this website. It is your responsibility to read and understand all aspects of the data sheets before you place an order and prior to application. Please pay special attention to the preparation, mixing and application temperatures of the product, cleaning of substrate and environmental factors such as temperature, rain etc. Quoted coverage rates are based on the manufacturers theoretical rates and may vary depending upon substrates absorption, texture and application. We always recommend a test is carried out to ensure suitability.

Customer further agrees that Promain have no liability for any errors or omissions contained within the Product Data Sheets and are not liable for failure due to misapplication or inadequate substrate cleaning and preparation. For more information please refer to our Terms & Conditions.

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