Enhanced TDS
Identification & Functionality
- Product Type
- Technologies
Features & Benefits
- Ready-to-Use Product Features
- Product Highlights
- Chil-Lastic™ CP-79 Sealant and Coating exhibits good adhesion to most surfaces.
- It is acid and alkali resistant and will not freeze, decompose or show settling or separation in storage.
- Chil-Lastic™ CP-79 Sealant and Coating provides an excellent water and vapor seal.
- It forms a tough, protective coating when cured, which does not tend to crack or peel during normal equipment operation.
- Chil-Lastic™ CP-79 Sealant and Coating requires no special mixing or additives.
Applications & Uses
- Markets
- Application Area
- Application Method
- Compatible Substrates & Surfaces
- Recommended Applications
- Chil-Lastic™ CP-79 Sealant and Coating is used as flashing material in the sealing of boiler settings to prevent air infiltration. It is also used in refractory applications.
APPLICATION
- Chil-Lastic™ CP-79 Sealant and Coating is normally applied by trowel or heavy duty airless spray. See reverse side of product data sheet for spray recommendations.
- Chil-Lastic™ CP-79 Sealant and Coating trowel grade has a heavy body and can be applied in wet thicknesses up to 1/8” (0.31 cm) without sagging or running.
- CP-79-T or CP-79-S cannot be successfully applied by brush. CP-79-T cannot be spray applied.
- Failure to apply the full coverage specified can result in premature failure of the product. Do not under-apply CP-79.
- Preparation and Application Information
Determining the Proper Viscosity
- It is necessary to determine the method of application based upon the overall size of the object being coated, since Chil-Lastic™ CP-79 Sealant and Coating is available in two viscosities (CP-79-T for trowel application and CP-79-S for spray application).
- Large, flat areas and/or objects that lend themselves to application by spray; CP-79-S is most appropriate for this type of situation.
- Smaller, irregularly shaped objects, such as fittings, lend themselves to application by trowel; CP-79-T is most appropriate for this type of situation.
- In addition, cost of spray equipment rental, purchase or use may be a factor in determining method of application.
- After the proper application has been determined, the proper product viscosity can be ordered.
- Do Not Thin.
Service Temperature Range
- For the temperature at the coated surface (the exposed surface), the service temperature range is -75°F to 350°F (-59°C to 177°C) if the temperature is continuous.
- Behind refractory, block or spray-applied, the temperatures at the refractory face can be 500°F (260°C) or higher, provided the temperatures behind the refractory (between the CP-79 and the steel shell) do not exceed -75°F to 350°F (-59°C to 177°C) if the temperature is continuous.
Application
- Prepare steel surfaces by abrasive grit blasting to remove all traces of mill scale, rust, paint and corrosion products.
- Remove all dust and grit from the surface.
- Apply the CP-79 promptly, before the blasted surface can flash rust.
- If absolutely necessary, the blasted surface may be primed with a thin coat of CP-79 cut 50/50 with mineral spirits.
- Apply the full thickness CP-79 application within 30 days.
Spray Application
- Chil-Lastic™ CP-79 Sealant and Coating is most readily applied by airless spraying equipment.
- Airless spray is faster, neater and gives a better, more uniform finish.
- A two-coat application will be required.
- Allow the first coat to set firm before applying the second coat.
- Industrial spray equipment is required to spray CP-79-S.
- It has a relatively high pseudoplastic consistency and a typical viscosity of 100,000 cps to 150,000 cps (Brookfield speed of 20 at 25°C).
- For this reason, it is necessary to have the spray unit mounted on an inductor plate (also called a ram plate) which will keep feed pressure on the mastic to the pump and avoid cavitation.
- For best results, consult a qualified industrial spray equipment dealer for equipment recommendations.
Pump Minimum 45:1 ratio pump with volume capacity to
feed a 0.045” spray tip is suggestedRam Plate Required Tip Reverse-A-Clean tip 0.045” orifice
Material to Hose to Gun 6-foot whip end, 1/2” I.D.,
working pressure 5,000 psi, burst 16,000 psiMaterial Hose – 50 ft. overall 3/4” I.D. 50’ long,
working pressure 4,000 psi, burst 16,000 psiMaterial Hose – 100 ft. overall 1” I.D. 100’ long,
working pressure 3,000 psi, 12,000 psi burstHeat Store CHIL-LASTICTM CP-79-S Sealant/Coating in a heated area.
The temperature of the CP-79-S should be at least 70°F (21°C) before spraying.
The capacity of inline heaters is too low to be effective- Most manufacturers of mastic spray equipment maintain nearby service facilities to aid in the solution of any technical problems that arise with their equipment.
Properties
- Color
- Physical Form
- Typical Properties
- Application Properties
| Value | Units | Test Method / Conditions | |
| Wet Weight | 8.6 | lbs./U.S. gal. | ASTM D1475 |
| Average Non-Volatile (by Volume) | 63.0 | % | ASTM D2369 |
| Storage Temperature Range | 4 - 38 | °C | — |
| Drying Time (Dry Through) | 14.0 | Days | — |
| Drying Time (Set to Touch) | 4 - 8 | Hours | — |
| Coverage Range | 8.0 | gal./100 sq. ft | — |
| Flash Point | min. 37 | °C | — |
| Value | Units | Test Method / Conditions | |
| Service Temperature Range | -59 to 177 | °C | — |
| Application Temperature Range | 10 - 38 | °C | — |
Regulatory & Compliance
- Certifications & Compliance
Storage & Handling
- Shelf Life
- 12 months