*PPG SigmaZinc 160

This product has been discontinued.
Out of stock
Product Description

Please note, this product is now discontinued. Contact our technical team for a suitable alternative.

PPG SigmaZinc 160 is a two component moisture curing inorganic zinc silicate primer offers curing even at low temperatures and is touch dry after just 30 minutes at 20°C.

PPG SigmaZinc 160 is a two component moisture curing inorganic zinc silicate primer designed as an anti corrosive primer for structural steel. SigmaZinc 160 is primarily based on zinc paste and clear binder that works to produce a greenish grey finish.

Best Uses

PPG SigmaZinc 160 works using a galvanic action that works to eliminate sub film corrosion and is is suitably used as a system undercoat in various paint systems based on unsaponifiable binders. Due to it's toughness and strong nature, SigmaZinc 160 can withstand extreme conditions to as low as -90°C and up to 400°C under normal atmospheric conditions.


PPG SigmaZinc 160 offers curing even at low temperatures and is touch dry after just 30 minutes at 20°C. Drying times will be significantly longer under low temperatures but still cures in the same manner. Providing you leave an interval of 12 hours before you apply a second coating, you will be offered a theoretical coverage rate of 8.7m2 per litre when applied by brush, roller or spray.

Surface and Environment

PPG SigmaZinc 160 can be used internally or externally in extreme conditions and works to provide the best anti corrosion protective coating to structural steel in an industrial or construction based environment.

Technical Details

Certificates & Approvals

  • Highways Agency Item No.155
  • Complies with SSPC Paint 20


  • Anti-corrosive primer for structural steel
  • Two component product consisting of clear binder and zinc paste
  • Suitable as a system primer in various paint systems based on unsaponifiable binders
  • Galvanic action eliminates sub film corrosion
  • Can withstand substrate temperatures from -90°C up to +400°C, under normal atmospheric exposure conditions.
  • When suitably topcoated provides excellent corrosion protection for steel substrates up to +500°C.
  • Good low temperature curing.
  • Good impact and abrasion resistance.

Technical info

Components: Two Components
Type: Moisture curing inorganic zinc (ethyl) silicate primer
Finish: Flat
Stock Colours: Greenish Grey
Tintable: No
VOC Content: 503.0 g/l
Volume Solids: 65 +/- 2%
Suitable Substrates: Structural Steel
Application Method: Airless Spray or Air Spray. Brush/Roller should only be used for touch up and spot repair
Theoretical Coverage: 8.7 m2 per litre at 75 microns 
Wet Film Thickness (WFT): -
Dry Film Thickness (DFT): 60 - 100 microns (2.4 - 4.0 mils) dpeneding on system
Induction Time: -
Pot Life: 12 hours at 20°C
Touch Dry: 30 minutes at 20°C
Overcoatable: After minimum 12 hours at 20°C
Fully Cured: 12 hours at 20°C
Cleaner / Thinner: PPG Thinner 90-53
Shelf Life: years from date of production unopened
Packaging: Available in 4 and 18 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.