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RUST O CAP CTG / RUST O CAP 23

RUST O CAP CTG / RUST O CAP 23

PRODUCT DESCRIPTION

Two components, high build, self-priming surface tolerant epoxy coating.


FEATURES & RECOMMENDED USE

• Designed as a maintenance coating for protection of steel in industrial environments
• Self-priming; eliminates the usage of primer
• Suitable as a touch-up coat for weld seams and damaged epoxy coating
• Can be applied on marginally prepared surfaces; tolerant to lower grades of steel preparation
• Good corrosion resistance and chemical resistance
• Can be over-coated with conventional coatings and most two-component paints
• Good adhesion to aged and sound epoxy, polyurethane and conventional alkyds

Category Tag Brand:

 

Product Datasheet


 

TECHNICAL DATA

Property Value
Colour Greys & limited range
Gloss Satin
Volume Solids approx. 80%
Recommended DFT / Coat 75 – 125 µm
Theoretical Covering Capacity 10.7 sq.mtr/ltr @ 75 µm 6.4 sq.mtr/ltr @ 125 µm
Drying Time at 30°C Surface dry: 2 hours Hard dry: 12 hours Full cure: 7 days
Overcoating Interval @ 30°C Min: 12 hours Max: 1 month (surface must be dry and clean)

Notes:
• Physical values subject to normal manufacturing tolerances, colour & testing variances
• Volume solids as per ASTM D 2697 (air drying method)
• Actual drying time depends on film thickness, ventilation, humidity, temperature
• Data based on 30°C & 65% RH
• Pastel shades may require multiple coats for hiding


DIRECTIONS FOR USE

Surface Preparation

General

• Surfaces must be dry, clean, and free from contaminants
• Remove dirt, dust, oil and contaminants that interfere with adhesion
• Oil & grease: remove per SSPC–SP1 solvent cleaning
• Surface must be checked & treated per ISO 8504


Blast Cleaning

• Steel: Abrasive blast clean to Sa 2.5 (Swedish Specification)

  • If oxidation occurs after blasting → re-blast
    • Recommended blasting profile (Rz): 50 – 60 µm

Steel (Atmospheric Exposure)

• New hot rolled steel: blast clean to Sa 2
• Weathered steel: power tool clean to St 3, or hand tool clean to St 2
• Existing sound epoxy or alkyd coatings:

  • Roughen
  • Clean
  • High-pressure fresh water wash to remove loose paint
  • Rusty/damaged areas → de-rust to St 3 / St 2 using power/hand tools

Application Conditions

• Substrate temperature: ≥3°C above dew point; ≤50°C
• Relative humidity: below 85%
• Good ventilation required in confined spaces


Mixing

• Supplied in two packs (base + hardener)
• Stir both components separately
• If settling is seen → hand stir, then power stir (low RPM)
• Add hardener gradually into base under continuous stirring
• Consume entire mixed unit within pot life
• Avoid part mixing (if unavoidable → seal tightly to avoid moisture entry)
• Add thinner after mixing and after induction time
• Excess thinner reduces sag resistance

Mixing Ratio (by volume) 5 : 1 (Base : Hardener)
Induction Time 15 minutes
Pot Life @ 30°C 2 hours

APPLICATION

Brush

Parameter Value
Recommended Thinner T-141
Volume of Thinner 0 – 10%*
Cleaning Thinner T-141

Airless Spray

Parameter Value
Recommended Thinner T-141
Volume of Thinner 5 – 20%*
Nozzle Orifice 0.53 – 0.66 mm (21–26 thou)
Nozzle Pressure 20 – 24 MPa (200–240 atm; 2800–3400 psi)
Cleaning Thinner T-141

Depends on film thickness & application conditions
Note: Air spray generally not recommended except for small touch-up areas


CLEANING

• Do not allow material to remain in hoses, gun or spray equipment
• Clean immediately with Thinner T 141
• Flush equipment periodically during the day
• Dispose of surplus material & empty containers per local regulations


SPECIAL INSTRUCTIONS

• Surface discoloration may occur on exposure to sunlight, elevated temperatures or chemicals
– This does not affect anti-corrosive performance
• Not recommended for immersion in acid, alkali & solvents


PRODUCT CHARACTERISTICS

• Airless spray gives maximum film build in one coat
• Brush coat typically gives 75 µm; multiple coats needed for full thickness
• Maximum performance after complete curing
• Minimum two coats recommended over prepared surface
• As with all epoxies, product will chalk & discolor on exterior exposure
– This does not harm anti-corrosive properties


PACK SIZE

20 L (Base: 16.67 L ; Hardener: 3.33 L)


STORAGE

• Shelf Life: At least 12 months @ 30°C (unopened), subject to inspection
• Store cool, dry, per local regulations


REGULATORY INFORMATION

Property Value
Flash Point Base: ≥24°C ; Hardener: ≥24°C
VOC Approx. 160 ± 40 gm/ltr (depending on shades), per US EPA Method 24
Product Weight Approx. 1.71 ± 0.06 kg/ltr (depending on shades)

SAFETY INFORMATION

• Avoid inhalation of solvent vapours or paint mist
• Avoid contact with skin & eyes
• Use forced ventilation in confined spaces
• Even with ventilation → respiratory, skin & eye protection always required
• Refer to MSDS before use


 

REFERENCES

Product Data Sheet – RUST O CAP CTG / RUST O CAP 23
Issued by Asian Paints PPG Pvt. Ltd. – September 2019
Document Version: PC 7040
Source: https://www.asianpaintsppg.com

Technical Guidelines & Explanatory Notes
Last accessed: 28 May 2025
Reference link:
https://www.asianpaintsppg.com/service-support/technical-guidelines

Note: Always consult the latest version directly from the manufacturer for the most accurate and updated technical data.