Navimare Polydur Sealer is a polyurethane sealer for all types of wood. It has excellent penetration properties and can be recoated with various Navimare Yacht products such as Barrierkote and all Varnishes.
Technical Properties
| Colour / Texture | : Transparent / Matt |
| Volume Solids | : 20% |
| Specific gravity | : 1.0 gr/ml |
| Volatile organic compounds | : 643 gr/liter |
| Flashpoint | : >25°C |
Surface Preparation
Fresh Wood — Clean substrate with fresh water and cleaner if required. Sand with a fine grade of sandpaper and remove the remaining dust with dry rags or rags slightly dampened with water (not solvent). The wood should be thoroughly dry prior to recoating. Repair — Remove all loose paint and contaminants. Clean substrate with fresh water and cleaner if required. Sand to a smooth, even surface and remove the remaining dust. The wood should be thoroughly dry prior to recoating.
Usage Instructions
Substrate should be dry and free from contaminations. Relative humidity less than 90% RH. Mix pack A and pack B well. Do not mix more than can be used in 30 minutes. The product is delivered in brush viscosity but if required can be thinned with 0–5% of the specified thinner. Apply by soft brush in order to impregnate the wood completely. Apply crosswise. Use 1–2 coats of Polydur Sealer and recoat with Barrierkote. Wear protective clothing, goggles and gloves.
Application Data
| Mixing ratio by weight | : Base to hardener: 75 to 25 |
| Mixing ratio by volume | : Base to hardener: 78 to 22 |
| Potlife | : 30 minutes at 23°C |
| Dry film thickness per coat | : 20 micron |
| Wet film thickness per coat | : 100 micron |
| Theoretical coverage | : 10 sq.m/lt |
| Thinner | : Navimare PU Thinner 7604 |
| Surface Temperature | : Min 1°C / Max 40°C |
Drying and Recoating Times
| Substrate temp. | Dry to recoat | Fully cured | Maximum recoating (1) |
| 10°C | 12 hours | 5 days | Indefinite |
| 23°C | 8 hours | 3 days | Indefinite |
| 30°C | 4 hours | 2 days | Indefinite |
(1) The surface should be dry and free from salts and other contaminants prior to overcoating. The best intercoat adhesion is achieved when the subsequent coat is applied before the preceding coat is fully cured. After prolonged exposure times it may be necessary to roughen the surface in order to ensure intercoat adhesion. When in doubt, consult your nearest Navimare office.
Health and Safety
Observe the precautionary notices on the label of the container. A material safety data sheet is available upon request and national or local safety regulations should be followed.
- Avoid skin and eye contact by wearing overalls, gloves, goggles, mask, etc.
- Spillage on the skin should immediately be removed by thorough washing with lukewarm water and soap or a suitable industrial cleaner.
- Eyes should be flushed with fresh water and medical attention sought immediately.
- Spraying should be carried out under well-ventilated conditions. Avoid inhalation of solvent vapours and paint mist by wearing an air mask.
- This product contains flammable materials and should be kept away from sparks and open flames. Smoking in the area should not be permitted.
Disclaimer
The information in this data sheet is provided to the best of our knowledge. However, we have no control over either quality or condition of the substrate and other factors affecting the use and application of this product. Therefore, we cannot accept any liability whatsoever or howsoever arising from the performance of the product or for any loss or damage arising from the use of this product. We reserve the right to change the product without notice.
