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InterShield 163 Inerta 160

A high solids, low VOC, two pack epoxy abrasion resistant coating designed for ice-going vessels. Low ice adhesion. Low frictional resistance.
Designed for operation at temperatures as low as -50°C.


To provide corrosion protection on the underwater areas of ice-going vessels including ice breakers. Maximizes icebreaking efficiency. Controls fuel consumption by control of hull roughness. Also for use on anode shield areas. Suitable for use with controlled cathodic protection.
For use at Newbuilding or Maintenance & Repair.

color ERA163-Black, ERA174-CGuard Red
Finish/Sheen Gloss
Part B (Curing Agent) ERA161
Volume Solids 95% ±2% (ISO 3233:1998)
Mix Ratio 2.00 volume(s) Part A to 1 volume(s) Part B
Typical Film Thickness 500 microns dry (526 microns wet)
Theoretical Coverage 1.9 m²/litre at 500 microns dft, allow appropriate loss factors
Method of Application Hot Twin Feed
Flash Point

Part A 75°C; Part B 55°C; Mixed 55°C

Induction Period Not applicable

Drying Information

  Substrate Temperature
  10°C 15°C 25°C 35°C
Touch Dry [ISO 1517:73] 24 hrs 16 hrs 5 hrs 3 hrs
Hard Dry [ISO 9117:90] 4 days 78 hrs 48 hrs 24 hrs
Pot Life - 5 minutes at 45°C

Overcoating Data

see limitations

Overcoated By Substrate Temperature
15°C 25°C 35°C
  Min Max Min Max Min Max Min Max
Intergard 263 12 hrs 3 days 8 hrs 3 days 4 hrs 3 days 60 mins 2 days
Intershield 163 Inerta 160 8 hrs 16 hrs 6 hrs 12 hrs 3 hrs 6 hrs 60 mins 3 hrs



VOC 40 g/lt as supplied (EPA Method 24) 30 g/kg of liquid paint as supplied. EU Solvent Emissions Directive (Council Directive 1999/13/EC)


VOC VOC values are typical and are provided for guidance purposes only. These may be subject to variation depending on factors such as differences in colour and normal manufacturing tolerances.



When used as part of an approved scheme, this material has the following certification:
• ICE CLASS: Recognised low friction surface coating (LR)
• Food Contact - Carriage of Grain (NOHA)
Consult your International Paint representative for details.


Consult your International Paint representative for the system best suited for the surfaces to be protected.


Use in accordance with the standard Worldwide Marine Specifications. All surfaces to be coated should be clean, dry and free from contamination. High pressure fresh water wash or fresh water wash, as appropriate, and remove all oil or grease, soluble contaminants and other foreign matter in accordance with SSPC-SP1 solvent cleaning.


Abrasive blast clean to Sa2½ (ISO 8501-1:2007). If oxidation has occurred between blasting and application of Intershield 163 Inerta 160, the surface should be reblasted to the specified visual standard.
A blast profile of 75 microns minimum is required.


Abrasive blast clean to Sa2½ (ISO 8501-1:2007). If oxidation has occurred between blasting and application of Intershield 163 Inerta 160, the surface should be reblasted to the specified visual standard. Surface defects revealed by the blast cleaning process, should be ground, filled, or treated in the appropriate manner.
A blast profile of 75 microns minimum is required.


Apply by hot twin airless spray only. Refer to detailed application guidelines. Consult International Paint.

Hot Twin Feed

Minimum 30:1 (ideal 45.1) ratio pump; minimum 3 GPM; 0.021-0.032" (533-813 microns) orifice tip; 3/8" (9.5 mm) ID high pressure insulated material hose; 90 PSI line pressure; 60 mesh tip filter. A solvent flush pump is also required.


Material is supplied in 2 containers as a unit. Preheat cold containers to minimise waste. Add individual components to appropriate hopper of Twin Feed Airless Spray.


DO NOT THIN! Thinning will destroy the abrasion resistance properties of the coating. Acetone is used as a flush because it evaporates very quickly and has the minimum effect, if any residual thinner remains in the whip hose. It is also excluded from V.O.C. regulations.


Application by brush will require more than one coat and is suggested only for small area touch up.


International GTA220/GTA822

Work Stoppages and Cleanup

Do not allow material to remain in the hose; flush immediately if work stops for more than 2 minutes. Thoroughly flush hose and spray gun. Monitor material condition. Do not exceed pot life limitations.
Clean all equipment at the end of the job with International GTA220/GTA822. Spray equipment requires flushing with acetone. It is good working practice to periodically flush out the spray equipment during the course of the working day. Frequency should depend upon amount sprayed, temperature, elapsed time including delay, etc. At the start up flush any International GTA220/GTA822 out of the lines. All surplus materials and empty containers should be disposed of in accordance with appropriate regional regulations/legislation.


In the event welding or flame cutting is performed on metal coated with this product, dust and fumes will be emitted which will require the use of appropriate personal protective equipment and adequate local exhaust ventilation. In North America do so in accordance with instruction in ANSI/ASC Z49.1 "Safety in Welding and Cutting."


All work involving the application and use of this product should be performed in compliance with all relevant national Health, Safety & Environmental standards and regulations.

Prior to use, obtain, consult and follow the Material Safety Data Sheet for this product concerning health and safety information. Read and follow all precautionary notices on the Material Safety Data Sheet and container labels. If you do not fully understand these warnings and instructions or if you can not strictly comply with them, do not use this product. Proper ventilation and protective measures must be provided during application and drying to keep solvent vapour concentrations within safe limits and to protect against toxic or oxygen deficient hazards. Take precautions to avoid skin and eye contact (ie. gloves, goggles, face masks, barrier creams etc.) Actual safety measures are dependant on application methods and work environment.


Prior to application, bring both components and the mixed paint to between 45°C and 50°C by recirculation and the use of insulated lines. This product will not cure adequately below 10°C. For maximum performance ambient curing temperatures should be above 10°C.
At Newbuilding, this product can be applied at temperatures down to 0°C provided the coating is allowed to cure for a minimum of 2 months prior to vessel delivery. Consult International Paint for curing times before launch and before service in ice. Overcoating information is given for guidance only and is subject to regional variation depending upon local climate and environmental conditions. Consult your local International Paint representative for specific recommendations. Apply in good weather. Temperature of the surface to be coated must be at least 3°C above the dew point. For optimum application properties bring the material to 21-27°C, unless specifically instructed otherwise, prior to mixing and application. Unmixed material (in closed containers) should be maintained in protected storage in accordance with information given in the STORAGE Section of this data sheet. Technical and application data herein is for the purpose of establishing a general guideline of the coating application procedures. Test performance results were obtained in a controlled laboratory environment and International Paint makes no claim that the exhibited published test results, or any other tests, accurately represent results found in all field environments. As application, environmental and design factors can vary significantly, due care should be exercised in the selection, verification of performance and use of the coating.


Unit Size Part A Part B
  Vol Pack Vol Pack
30 lt 20 lt 20 lt 10 lt 10 lt
7.5 US gal 5 US gal 5 US gal 2.5 US gal 5 US gal

For availability of other unit sizes consult International Paint


Unit Size Unit Weight
30 lt 46.98 Kg
7.5 US gal 97 lb


Shelf Life 12 months minimum at 25°C. Subject to re-inspection thereafter. Store in dry, shaded conditions away from sources of heat and ignition.