NS-550
Elastomeric epoxy/urethane hybrid for cavitation protection and high-flex, high-impact applications.
Item Numbers
| Color | Kit Size | Product Code |
|---|---|---|
| Black | 15lb | 735445.05.25 |
| Black | 3lb | 735445.05.22 |
General
- Type: Amine Cured 100% Solids Epoxy / Epoxy Urethane Hybrid
- Color: Black
- Mix Ratio: 2:1 by volume (100 g Base : 50 g Activator by weight)
- Viscosity: 60,000–90,000 cps (light paste)
- Solids by Volume: 100%
- Weight per Gallon: 10.8 lbs (4.89 kg)
- Pot Life: 35 min/gal at 72°F
- Shelf Life: 5 years at 55°F – 95°F (13°C – 35°C)
- Coverage: 6.4 ft² (0.6 m²)/gal theoretical at 250 mils
- Film Thickness: Up to 550 mils vertical without slump
Temperature Resistance
- Continuous immersion: Max 150°F (66°C)
- Immersion spike: Up to 180°F (82°C) for 3 hours
- Dry service: Max 325°F (163°C)
Mechanical Properties
- Abrasion: Excellent
- Flexibility: Excellent
- Elongation: 200%
- Hardness: Shore A 90
- Impact Resistance (Direct): 400 in-lbs
Chemical Resistance
- Water: Excellent
- Alkalies: Excellent
- Inorganic Acids: Good
- Organic Acids: Good
- Organic Solvents: Good
Typical Applications
Cavitation protection, abrasion protection, concrete and steel flooring and work areas, manways, decking, water box/tube sheet expansion joints, crack repair.
WARNING: See Material Safety Data Sheet (SDS) before handling this product.
Surface Preparation
Steel surfaces must be abrasive blasted with chloride-free abrasive. Grind all burrs, weld seams, and sharp edges. NS-550 is self-priming. If needed, prime fresh blasted surfaces immediately with NS-830 Prime to prevent oxidation.
- Exterior applications: SSPC SP-6 Commercial gray metal finish
- Immersion applications: SSPC SP-6 White Metal — 3 to 5 mil profile
Concrete surfaces should 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 blast existing coatings to clean concrete. NS-550 is self-priming on concrete. If needed, prime with NS-80 or NS-10.
Mixing
Thoroughly mix Activator into Base using a mixing stick or drill with a low-speed mixing blade, 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, putty knife, or caulk gun.
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 30–45 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: 1 to 12 hours
- 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: 12 hours at 120°F (49°C)
Clean Up
Clean tools immediately after use.
- Standard: Acetone, M.E.K., 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.
