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Aluminum and MIO filled penetrating MCU primer for enhanced durability, abrasion and corrosion resistance.
RP-3 is a single component, aluminum rich, MCU primer with micaceous iron oxide (MIO) designed to provide excellent corrosion resistance. This coating forms a flexible, high solids film over marginally prepared steel, old coatings, red lead systems, and rusted surfaces. Our proprietary blend of aluminum and MIO creates a universal penetrating sealer for maximum protection against more corrosion. RP-3 is ideal for priming old and deteriorated surfaces with little surface preparation. RP-3 is recommended for application on SP12, SP2, and SP3 prepared surfaces. - Minimal surface preparation
- High surface tolerance with excellent adhesion
- High chemical & abrasion resistance
- Wide application temperature tolerance - from 20°F to 160°F
- High tolerance to salts
| - Encapsulates old coatings and lead systems.
- Superior flexibility & no cracking at high DFT
- For immersion and atmospheric exposure
- VOC compliant (less than 2.8 lbs/gal)
- Over-coatable with no recoat-window
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| Substrates | Types of Applications | | - Carbon Steel
- Galvanized Metal
- Ferrous Metal
- Aluminum
- Previously Existing Coatings
| - Structrual Steel
- Tanks (interiors, exteriors)
- Refineries
- Piping
- Marine Facilities
| - Chemical Processing
- Bridges
- Metal Ships & Fishing Vessels
- Pulp Mills
- Power Generation Facilities
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Color:
Finish:
Volume Solids:
VOC: | Aluminum
Matte
63.0% ± 2.0
< 2.8 lb/gal (< 340 g/L) | Number of Coats:
Flash Point:
Application Temp:
Dry Heat Resistance:
Shelf life: | 1 or more
110°F Tag closed cup
20°F - 160°F (-7°C - 71°C)
400°F (204°C) continuous
12 Months (40°F - 100°F) - Store indoors |  @ 13 mils wet - 50% Relative Humidity (RH)
| | 40°F (4°C) | 77°F (25°C) | 95°F (35°C) | 120°F (49°C)
| 160°F (71°C)
| Touch
| 1 hr
| 45 minutes
| 20 minutes
| 10 minutes
| 5 minutes
| | Recoat | 4 hrs | 3 hrs
| 1.5 hrs
| 45 minutes
| 15 minutes
| | Cure | 10 days
| 7 days
| 5 days
| 4 days
| 2 days | - For faster dry times, add R-CAT.
- Dry time is a function of temperature, humidity and coating thickness.
- There is no maximum time limit for recoat on clean surfaces
Use SSPC-SP1 solvent cleaning to remove oil and grease or other contaminants prior to employing surface preparation methods.
Blast Clean surfaces for immersion or severe service projects by ISO 8504-2 methods to ISO 8501-1 SA 2.5 or SSPC-SP10/NACE No. 2 (visual standard SSPC vis 1) Near White Metal finish OR by SSPC 12/ NACE 5.0 High or Ultra High Pressure water jetting methods to WJ 2 M (visual standard SSPC vis 4/NACE vis 7) very thorough cleaning finish (not applicable for new steel) OR by SSPC-TR2/NACE 6G198 Wet abrasive blast cleaning methods to WAB 10 M (visual standard SSPC vis 5/NACE vis 9) Wet near white metal blast clean finish. Consult your Rivera Coatings representative for minimal surface preparation.
Prepare surfaces for non-immersion or atmospheric service projects by ISO 8504-2 methods to ISO 8501-1 SA 2 or SSPC-SP6/NACE No. 3 (visual standard SSPC vis 1) Commercial Blast Clean finish OR by SSP 12/NACE 5.0 High or Ultra High pressure water jetting methods to WJ 4 M (visual standard SSPC vis 4/NACE vis 7) OR by SSPC-TR2/ NACE 6G198 Wet abrasive blast cleaning methods to WAB 6 M (visual standard SSPC vis 5/NACE vis 9) Wet commercial blast clean finish. For minimum surface preparation, use conscientious hand and power tool cleaning methods in accordance with ISO 8504-3 or SSPC-SP 2 and 3 to remove corrosion and loose or failing paint to ISO 8501-1 St 2 or SSPC-SP 2 and 3 (visual standard SSPC vis 3). Feather-edges of sound, existing paint back to a firm edge.
Blast cleaning methods should produce a surface profile of 1.0 - 2.0 mils Prepare surfaces using SSPC-SP12/NACE No. 5 Low Pressure Water Cleaning methods. Supplement SSPC-SP 12 LPWC with ISO 8501-1 St 2 (SSPC-SP 2 or 3) hand or power tool cleaning where areas show excessive corrosion. Use SSPC-SP1 solvent cleaning to remove oil and grease prior to surface preparation methods. | Prepare surfaces using SSPC-SP1 Solvent Cleaning and SSPC-SP12/ NACE No. 5 Low Pressure Water Cleaning methods to remove surface contamination. Supplement weathered galvanized surface preparation with ISO 8501-1 St 2 (SSPC-SP 2 and 3) hand and power tool cleaning to remove excessive corrosion and impart surface profile on bare metal. Supplement new galvanized surface cleaning with mechanical abrasion to impart surface profile and support mechanical adhesion. - Previously Existing Coatings
Prepare surfaces using SSPC-SP12/NACE No. 5 Low Pressure Water Cleaning methods to remove surface contamination. Supplement SSPC-SP 12 LPWC with SSPC-SP1 Solvent Cleaning and ISO 8501 St 2 (SSPC-SP2 and 3) Hand and Power Tool clean areas of corrosion and loose or flaking paint (feather edges of sound, existing paint back to a firm edge). OR prepare surfaces using SSPC-SP 12/Nace 5.0 High or Ultra High Pressure waterjetting to WJ. Spot prime clean, bare metal with a Rivera Coatings recommended primer. Sand glossy surfaces to provide profile. Apply a test sample to a small area to determine coating compatibility.
| The surface to be coated must be dry, clean, dull, and free from dirt, grease, oil, rust, mill scale, salts or any other surface contaminants that interfere with adhesion.
Ensure welds, repair areas, joints, and surface defects exposed by surface preparation are properly cleaned and treated prior to coating application.
Areas of oxidation after surface preparation and prior to coating application, should be prepared to specified standard consult the referenced standards, SSPC-PA1 and your Rivera Coatings Representative for additional information or recommendations. - For guidance in methods of surface preparation and for visual standards, refer to STEEL STRUCTURES PAINTING MANUAL, VOL 2, SYSTEMS AND SPECIFICATIONS, published by Steel Structures Painting Council (SSPC).
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- RP-3 can be applied by brush, roll, airless spray and conventional spray methods (one grade only). Follow proper mixing instructions before applying.
Material temperature must be 5° F (3°C) above the dew point before opening and agitating. Power mix thoroughly prior to application.
Do not keep under constant agitation.
Apply a 3 - 6 oz solvent float over material to prevent moisture intrusion and cover pail.
Brush: Medium Natural Fiber
Roller: Natural or synthetic fiber cover
Nap: 1/4” to 3/8”
Core: Phenolic
Pump Ratio: 30:1
Pressure: 2400 - 3000 psi (170 - 207 Bar)
Hose: 1/4” to 3/8” ID
Tip Size: 0.015 - 0.021
Filter Size: 60 mesh (250 μm)
| Fluid Nozzle: E Fluid Tip
Air Cap: 704 or 765
Atomizing Pressure: 45 - 75 psi
Fluid Pressure: 15 - 25 psi
Hose: ½” ID; 50’ Max MEK, MIBK, Xylene, a 50:50 blend of Xylene and MEK
or MIBK. Reduction is typically not required. If necessary, thin up to 10% with recommended thinner. Thin in accordance with local and federal regulatory standards.
MEK, MIBK, Xylene, a 50:50 blend of Xylene and MEK or MIBK, or acetone. Do not add unauthorized Rivera Coatings solvents to a Rivera Coatings product.
Temperature: 10° - 160° F (-7° - 71° C)
This temperature range should be achieved for ambient, surface
and material temperature.
Substrate must be visibly dry and free from contaminants.
Relative Humidity: 6% - 99% Store off the ground in a dry, protected area in temperature between 40 - 100°F (4 - 38°C). MCU containers must be kept sealed when not in use. Use a solvent fl oat to reseal partial containers. | 
Packaging:
Weight per Gallon:
Shelf life:
Flash point:
DOT Hazard Class
DOT Packaging Group:
DOT Label:
DOT Shipping name:
UN/NA Number: | 1, 3 and 5 gallon pails
9.8 ± 0.5 lb
12 months from date of shipment when stored under specified conditions
110°F Tag closed cup
3
III
FLAMMABLE LIQUID
UN 1263 Paint
1263 | 
- Consult the MSDS before use.
- Apply Material with adequate air exchange and ventilation.
- All application personnel must use respirators rated for organic vapors, or if in confined spaces, wear fresh air respirators or fresh air hoods.
- Wear protective clothing, gloves and eye protection.
- Breathing fumes or contact with the skin may cause allergic reactions.
- No warranty of current accuracy is hereby given or implied. The statements made herein are based on our research or the others.
- Rivera Coatings assumes no responsibility for coverage, performance or injuries resulting from use or handling. Liability, if any, shall be limited to product replacement.
- In no event shall Rivera Coatings be liable for consequential or incidental damages.
- Published product information is subject to change without notice.
- Contact Rivera Coatings for current product information.
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