NS-826
Sprayable epoxy Novolac coating for metals in highly aggressive chemical, abrasion, and high-temperature environments.
Item Numbers
| Color | Kit Size | Product Code |
|---|---|---|
| Blue | 15 lb | 714240.07.25 |
| Blue | 3 lb | 714240.07.22 |
| Gray | 15 lb | 714240.03.25 |
| Gray | 3 lb | 714240.03.22 |
General
- Type: Epoxy Novolac Coating — Amine Cured, 100% Solids, 0% VOCs
- Color: Blue, Gray
- Mix Ratio: 2:1 by volume (100 g Base : 50 g Activator by weight)
- Viscosity: 65,000–85,000 cps
- Solids by Volume: 100%
- Weight per Gallon: 12.5 lbs (5.7 kg)
- Pot Life: 23 min/gal at 72°F
- Shelf Life: 5 years at 55°F – 95°F (13°C – 35°C)
- Coverage: 80 sf/gal at 20 mils (7.4 m²/gal) — add 20% for waste
Film Thickness
- Hand application: 10–30 mils per coat (250–750 microns)
- Spray application: 15–40 mils per coat (375–1,000 microns)
Temperature Resistance
- General immersion service: Max 200°F (93°C)
- Immersion spike: Up to 350°F (177°C) for 3 hours
- Dry service: Max 325°F (163°C)
- Dry spike: Up to 500°F (260°C) for 3 hours
Mechanical Properties
- Abrasion: Excellent
- Flexibility: Good. Very Good when applied with Polyester or Fiberglass Mat (1.5 oz/ft²)
Chemical Resistance
- Water: Excellent
- Alkalies: Excellent
- Inorganic Acids: Very Good
- Organic Acids: Very Good
- Organic Solvents: Very Good
Typical Applications
Petrochemical tanks for crude oil, diesel, and fuel oils; neutralization tanks; caustic tanks; clarifiers; demin tanks; concrete secondary containment; pumps. Low coefficient of friction improves flow.
WARNING: See Material Safety Data Sheet (SDS) before handling this product.
Surface Preparation
Steel surfaces must be abrasive blasted with chloride-free abrasive. Grind flat all burrs, weld seams, and sharp edges.
- Exterior applications: SSPC SP-6 Commercial metal finish
- Immersion applications: SSPC SP-10 Near-White Metal — 4+ mil (100 micron) profile
- If coating by hand (brush or roller), prime fresh blasted surfaces immediately. Use NS-826, EE-11 Prime, or S-15.
Concrete surfaces must be degreased if oil or grease contamination is present, then high pressure washed, acid etched, and high pressure washed again until clean and free of all grease, oils, and surface laitance. Abrasive blasting is preferable. Prime existing coatings with NS-826, EE-79, or EE-10.
Mixing
Thoroughly mix Activator into Base using a mixing stick or drill with a low-speed mixing blade.
- By volume: 2 parts Base to 1 part Activator
- By weight: 100 g Base to 50 g Activator
Never thin this product.
Application
- Brush: Use a medium to stiff bristle brush of sufficient quality that bristles do not pull out (epoxy-glued bristles are best). Trim or tape to less than 1" nap.
- Roller: Use good quality 3/8" nap on metal; 1/2" nap for rough concrete.
- Plural Spray: .031–.045 RAC tip, 3,000–3,500 PSI. Heat to 170°F Base, 120°F Activator. Consult Novoshield for job-specific requirements.
- Airless Spray: .035–.045 RAC tip, 5,000–5,800 PSI (60:1+). Recommended only with in-line heater at 120°F–135°F. Caution: short pot life. Consult Novoshield for job-specific requirements.
- Conventional Spray: Not recommended.
All spray equipment must use traps to prevent water and oil contamination, and 30 mesh screens to prevent particulate contamination.
Application Temperature
- Material: 55°F – 95°F (13°C – 35°C)
- Substrate: 45°F – 105°F (7°C – 40°C)
- Max temp differential between material and substrate: 10°F (5°C)
- Dew point: Substrate must be minimum 5°F (3°C) above dew point
- Max relative humidity: 90%
For cold conditions, the Base component can be warmed in a microwave for 30 seconds (1 KG unit) or in a warm water bath. Heat Activator by warm water bath only. Allow material to cool to working temperature before applying if overheated.
Do not use gas, oil, or kerosene heaters — these leave residue on metal surfaces that will compromise adhesion. Use electric heaters or heat lamps only.
Overcoat & Cure Times (at 72°F / 25°C)
- Brush or roller recoat window: 2 to 3 hours
- Spray: Up to 40 mils can be applied in a single coat
- Full cure before immersion: 24 hours at 72°F
- Force cure (recommended for aggressive environments): 12 hours at 150°F (66°C), or 4 hours at 250°F (121°C)
Clean Up
Clean tools immediately after use.
- Standard: Methyl Ethyl Ketone, Acetone, or another ketone blend
- Solvent-controlled environments: 98–100% Isopropyl Alcohol
Manufacturer makes no warranty either expressed or implied including warranties of merchantability or fitness for a particular purpose for this product. The information contained herein is provided in good faith and believed to be true and accurate. Contact our technical team for specific application guidance.
