Jotun Resist 78

Part A: UN1263 (Class: 3, Pk Grp: II), Part B: UN3077 (Class: 9, Pk Grp: III)
A two component moisture curing inorganic zinc ethyl silicate coating. Heat resistant up to 540°C.
Available in 11.6 Litres in Grey
£275.66 £229.72
In stock
Product Description

Jotun Resist 78 is a two component moisture curing inorganic zinc ethyl silicate coating. Heat resistant up to 540°C (1004 °F) as a primer in atmospheric environments. Suitable for structural steel and piping to be exposed to highly corrosive environments.

Best Uses

Jotun Resist 78 is a fast curing, very high zinc dust containing product that conforms to the compositional requirements of SSPC paint 20, level 2 and ISO 12944-5. It provides excellent corrosion protection as part of a complete coating system. It is heat resistant up to 540 °C (1004 °F). To be used as primer in atmospheric environments. Suitable for properly prepared carbon steel substrates only. This product complies with ASTM D520 type II zinc dust.

Suitable for structural steel and piping to be exposed to highly corrosive environments, C5I or C5M (ISO 12944-2). Recommended for offshore environments, refineries, power plants, bridges, buildings and mining equipment. Specially designed as a primer for coating systems where extended durability is required.


To secure lasting adhesion to the subsequent product all surfaces shall be clean, dry and free from any contamination. For Carbon Steel, prepare to Sa 2.5 with a surface profile of Fine to Medium G. Use air spray or airless spray. Brush is recommended for stripe coating and small areas. Care must be taken to achieve the specified dry film thickness. In order to avoid settling of heavy zinc, continuous mechanical stirring during application is recommended.

Technical Details


  • Pre-qualification testing in accordance with NORSOK M-501, Rev. 5, System 1, suitable for exterior exposure in offshore environment, below 120°C
  • Tested by independent institute for static coefficient of friction


  • Heat resistant in dry atmospheric environments at a continous 400°C. This product can withstand a peak temperature of 540 °C (1000 °F) for a longer period as well. A continuous temperature above 400 °C (752 °F) will however affect the long term performance of an inorganic zinc silicate coating. Peak temperature duration max. 1 hour

Technical Info

Components: Two Part
Type: Moisture curing inorganic zinc ethyl silicate coating
Finish: Matt
Stock Colours: Grey
Tintable: No
VOC Content: 486.0g per Litre
Volume Solids: 72%
Suitable Substrates: Suitable for properly prepared carbon steel substrates only
Application Method: Air Spray, Airless Spray. Use a brush for stripe coating and other small areas
Theoretical Coverage: 8 - 14.4 m2 per litre
Wet Film Thickness (WFT): 70 - 125 microns
Dry Film Thickness (DFT): 50 - 90 microns
Induction Time: -
Pot Life: 8 hours at 23°C
Touch Dry: 30 mins at 10°C
Overcoatable: 13 hours at 10°C
Fully Cured: 13 hours at 10°C
Cleaner / Thinner: Jotun Thinner No. 4 or Jotun Thinner No. 25
Shelf Life:  
Packaging: Available in 11.6 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.

Recommended products to use