NS-891
Rapid-set ceramic epoxy rebuild for fast field repairs — back in service in 1 hour.
Item Numbers
| Color | Kit Size | Product Code |
|---|---|---|
| Blue | 25 lb | 725169.07.27 |
| Blue | 5 lb | 725169.07.23 |
| Gray | 25 lb | 725169.03.27 |
| Gray | 5 lb | 725169.03.23 |
General
- Type: Epoxy Rebuilding Compound — Amine Cured, 100% Solids, 0% VOCs
- Color: Blue, Gray
- Mix Ratio: 2:1 by volume and by weight (100 g Base : 50 g Activator)
- Viscosity: Paste
- Solids by Volume: 100%
- Weight per Gallon: 15.2 lbs (6.9 kg)
- Pot Life: 5 min/kg at 75°F
- Shelf Life: 5 years at 55°F – 95°F (13°C – 35°C)
- Coverage: Varies with thickness applied
Temperature Resistance
- General immersion service: Max 140°F (60°C) — chemistry dependent
- Immersion spike: Up to 200°F (93°C) for 3 hours
- Dry service: Max 325°F (165°C)
- Dry spike: Up to 450°F (232°C)
Mechanical Properties
- Flexural Strength: 14,000 psi (ASTM D790 / 7 days)
- Compressive Strength: 17,480 psi (ASTM D695 / 7 days)
- Tensile Shear: 2,360 psi (ASTM D1002 / steel:steel)
- Abrasion: Excellent
- Flexibility: Fair
Chemical Resistance
- Water: Excellent
- Alkalies: Excellent
- Inorganic Acids: Good
- Organic Acids: Good
- Organic Solvents: Very Good
Typical Applications
Fast repair and return-to-service for ore and coal handling equipment, chutes, pumps, impellers, propellers, valves, hydro-wheels, and pipe elbows. Suitable for any high-wear immersion or non-immersion application.
WARNING: See Material Safety Data Sheet (SDS) before handling this product.
Surface Preparation
Metal surfaces must be cleaned, degreased, and abrasive blasted with chloride-free abrasive. Grind flat all burrs, weld seams, and sharp edges. Rebuild fresh-blasted surfaces as quickly as possible to prevent oxidation.
- Exterior applications: SSPC SP-6 Commercial Finish — 4 mil profile minimum
- Immersion applications: SSPC SP-10 Near White Metal — 4 to 6 mil profile
- Concrete: Degrease, neutralize, and ensure surface is fully dry before application.
Mixing
Thoroughly mix Activator into Base using a mixing stick, scraping the sides and bottom of the container 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 50 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 putty knife or plastic applicator.
- If using a mold or form, coat its surface with a release agent before application.
- Machining is possible using diamond-tipped tools only.
- Grinding must be done within 2 hours of application at 77°F. Add 1 hour per 10°F below 77°F; subtract ½ hour per 10°F above 77°F.
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: 20 minutes to 2 hours (while material is still soft)
- Maximum overcoat time: 4 hours
- Full cure before immersion: 4 hours at 77°F
- Force cure option: 1 hour at 100°F (38°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: Acetone or Methyl Ethyl Ketone (M.E.K.)
- 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.
