NS-851
Ceramic and toughener-blend epoxy rebuild for fluid flow equipment — excellent cavitation and bi-metallic corrosion resistance.
Item Numbers
| Color | Kit Size | Product Code |
|---|---|---|
| Blue | 15 lb | 725260.07.25 |
| Blue | 3 lb | 725260.07.22 |
| Gray | 15 lb | 725260.03.25 |
| Gray | 3 lb | 725260.03.22 |
General
- Type: Amine Cured 100% Solids Epoxy Rebuilding Compound — 0% VOCs
- Color: Blue, Gray
- Mix Ratio: 2:1 by volume (100 g Base : 50 g Activator by weight)
- Viscosity: Paste
- Solids by Volume: 100%
- Density: 1.77 g/cm³
- Weight per Gallon: 14.8 lbs (6.7 kg)
- Pot Life: 20 min/kg at 72°F (22°C)
- Shelf Life: 5 years at 55°F – 95°F (13°C – 35°C)
- Coverage: Varies with thickness applied
Temperature Resistance
- Continuous immersion: Max 140°F (60°C)
- Immersion spike: Up to 200°F (93°C)
- Dry service: Max 250°F (121°C)
- Dry spike: Up to 325°F (163°C)
Mechanical Properties
- Flexural Strength: 13,800 psi (ASTM D790 / 7 days)
- Compressive Strength: 17,900 psi (ASTM D695 / 7 days)
- Tensile Shear: 3,560 psi (ASTM D1002 / steel:steel)
- Abrasion: Excellent
- Flexibility: Good
Chemical Resistance
- Water: Excellent
- Alkalis: Excellent
- Inorganic Acids: Good
- Organic Acids: Fair
- Organic Solvents: Good
Typical Applications
Condensers, heat exchangers, divider plates, manways, pumps, impellers, propellers, valves, hydro-wheels, and pipe elbows. Ideal for fluid flow equipment subjected to high wear.
WARNING: See Material Safety Data Sheet (SDS) before handling this product.
Surface Preparation
Steel surfaces must be abrasive blasted with chloride-free abrasive. Fresh blasted ferrous surfaces must be primed immediately to prevent oxidation.
- Exterior applications: SSPC SP-10 Near White Metal finish
- Immersion applications: SSPC SP-5 White Metal — 3 to 5 mil profile
Grind flat all burrs, weld seams, and sharp edges. Prime as needed.
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. Existing coatings should be abrasive blasted to clean concrete. Prime as needed.
Mixing
Thoroughly mix Activator into Base using a mixing stick or drill with a low-speed mixing blade until the material is an even color with no streaks.
- By volume: 2 parts Base to 1 part Activator
- By weight: 100 g Base to 43 g Activator
Never thin this product.
Application
Apply using a heavy plastic squeegee or putty knife. Work the material firmly into the substrate profile to maximize adhesion and eliminate trapped air. Contour to the correct form with a plastic applicator or putty knife.
- If using a mold or form, coat its surface with a release agent before application.
- Machining is possible using carbide-tipped tools.
- Machining and grinding is best done within 8 hours of application at 77°F. Add 1½ hours per 10°F below 77°F; subtract 1 hour per 10°F above 77°F. After this window the material becomes very hard and will rapidly wear bits and discs.
- Large holes and cracks can be bridged with glass or metal cloth.
Application Temperature
- Material: 55°F – 95°F (17°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 77°F / 25°C)
- Recoat window: 2 to 8 hours (while material is still soft — fingernail indent test)
- Full cure before immersion: 72 hours at 77°F — add 1 day per 10°F below 77°F; subtract 15 hours per 10°F above 77°F
- Force cure option: 1 hour at 200°F (93°C), or 12 hours at 120°F (49°C)
If the overcoat window is exceeded, abrade the surface with coarse sandpaper, a grinder, or brush blast before recoating.
Clean Up
Clean tools immediately after use.
- Standard: M.E.K., Acetone, or similar
- Solvent-controlled environments: 98%+ 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.
