Epoxy Sealing Varnish XH4066 is an epoxy coating for use as a topcoat. It provides high penetration and can be used as a general-purpose sealing primer on porous substrates such as concrete, thermal-sprayed zinc and thermal-sprayed aluminium. Parameters on this page: volume solids 47 ± 2%, DFT 30/40/50 µm, theoretical spreading rate 9.2 m2/L.
Parameter source: T&H original technical data sheet (TDS) "Epoxy Sealing Varnish XH4066"; values such as spreading rate are converted from TDS parameters and are for selection reference only.
The above content is compiled from the manufacturer's datasheet and this site's parameter tables. For selection, coating systems and lead times, pleaseContact Usfor confirmation.
This page carries the full TDS for this product, translated from the manufacturer's original document. No file download is needed; for an original-language copy, send an enquiry.
| Volume Solids | 47 ± 2% |
|---|---|
| Dry Film Thickness | 30/40/50 µm |
| Theoretical Spreading Rate | 9.2 m2/L |
| VOC | 490g/L |
| Density / Specific Gravity | 1.0 kg/L |
| Number of Components | Two-component |
| Flash Point | 25°C |
| Thinner | 0-5% |
| Mixing Ratio | Base : curing agent = 2.5:1 (by weight), 69:31 (by volume) |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A two-component amine-cured epoxy sealing coating. It provides high penetration and can be used as a general-purpose sealing primer on porous substrates such as concrete, thermal-sprayed zinc and thermal-sprayed aluminium.
| Colour | Clearcoat |
|---|---|
| Gloss | N/A |
| density | 1.0 kg/L |
| Volume Solids | 47±2% |
| Volatile Organic Compounds | 490g/L |
| Flash Point | 25°C |
| Mixing ratio | Base : curing agent = 2.5:1 (by weight), 69:31 (by volume) |
| Typical dry film thickness | 40µm |
|---|---|
| Recommended dry film thickness | 30–50 µm, depending on system requirements |
| Induction time (20 °C) | 10-15min |
| Thinner quantity (by volume) | Airless spray 0–5% | Air spray 5–15% | Roller or brush 0–5% |
| Recommended nozzle size | 0.38~0.53mm | 1.5~2.0mm | / |
| Recommended spray pressure | 15~20MPa | 0.3~0.6MPa | / |
| Application suitability | Recommended | Applicable | Recommended |
*In high-temperature seasons, use a slow-drying thinner
| Dry film thickness (µm) | 30 | 40 | 50 |
| Wet film thickness (µm) | 64 | 85 | 106 |
| Theoretical spreading rate (m²/L) | 15.3 | 11.4 | 9.2 |
| Temperature | Surface Dry | Hard Dry | Pot Life | Recoat interval | |
| Minimum | Maximum* | ||||
| 5°C | 6h | 24h | 8h | 24h | |
| 15°C | 4h | 12h | 6h | 12h | / |
| 25°C | 2h | 8h | 4h | 8h | |
| 40°C | 30min | 4h | 2h | 4h | |
*The maximum recoat interval depends on the exposure environment and the end use of the coating.
All surfaces to be coated shall be clean, dry and free from contamination. Prior to application, all surfaces shall be assessed and prepared in accordance with ISO 8504:2000. Abrasive blast clean to Sa2½ with a surface profile of 40–75 µm. Oil, grease and weld spatter shall be removed from the surface and welds and sharp edges ground before descaling. Where a coating of this product has suffered mechanical damage with local rusting, spot abrasive blast cleaning to Sa2½ or power tool cleaning to St3 is required before local repair. Where this product is to be applied over an approved old zinc-rich primer film, any chalking or zinc salts on the zinc dust coating shall be removed completely before application. For concrete protection, the concrete shall have reached its curing requirement, with moisture content and surface condition complying with relevant regulations.
1. During application, ensure good ventilation and exhaust, keep away from ignition sources, and wear a mask, gloves and other protective equipment; adequate ventilation shall also be maintained during curing. 2. Before mixing the two components, stir the base thoroughly with a power tool, then add the curing agent and mix uniformly; adjust the thinner amount according to application requirements and temperature changes, mix thoroughly, and allow an induction time of 10–15 min before application. 3. Before applying the next coat, ensure the sealer is hard dry, otherwise the effectiveness of sealing pinholes will be reduced. If the coating is to be applied over an old zinc dust primer film, chalk or zinc salts on the zinc dust coating shall be removed thoroughly. 4. If the coating chalks after long-term exposure, wash with high-pressure water or abrade the surface before applying the next coat. 5. When used to seal thermally sprayed metal, the metal layer shall be coated within the overcoating interval specified by the design specification. 6. During application and curing, the substrate temperature shall be above 5 °C and at least 3 °C above the dew point, and the relative humidity shall not exceed 85%. Temperature and relative humidity shall be measured on the substrate close to the work area. 7. Cutting structures coated with this coating produces fumes; appropriate protection shall be taken. 8. When work is interrupted, do not leave paint in hoses, spray guns or spray equipment. Flush all equipment thoroughly with thinner. If work is interrupted for too long, remix a fresh batch of paint before resuming. 9. All equipment shall be cleaned with thinner immediately after use. Periodically flushing spray equipment during the daily work is good practice. The frequency of cleaning depends on the quantity sprayed, temperature, spraying time and interruptions. 10. Remaining paint and empty cans shall be disposed of in accordance with relevant local regulations.
| 15.4 kg per kit | Base 11 kg | Curing agent 4.4 kg |
| 16 L per unit | Base 11.1 L | Curing agent 4.9 L |
Keep sealed in a ventilated, cool, dry place away from sources of ignition. Minimum 12 months.
1. For the coating and its recommended thinners, see the safety sheets and the safety data of the relevant materials. This is a solvent-borne coating; avoid inhaling spray mist and solvent vapours, and avoid exposing skin and eyes and contact with uncured paint as far as possible. 2. All work related to the application and use of this product must comply with the relevant national health, safety and environmental standards and regulations. 3. If welding or flame cutting is required on metal coated with this product, dust and fumes will be generated; use appropriate personal protective equipment and adequate local ventilation. 4. If in doubt about the suitability of this product, consult the company.
The information in this data sheet is based on laboratory test results that we believe to be accurate, and is provided as application guidance only. All recommendations and advice on the use of T&H products, whether in technical documents, special consultations or otherwise, are based on information that we believe to be reliable. Our products and the information provided are intended for users with the necessary knowledge and industrial experience; it is ultimately the end user who decides whether the products are suitable for their use. T&H cannot control the quality and condition of the substrate, nor the various factors affecting the use of the product. Therefore, T&H accepts no liability for any loss, injury or damage arising from the use of the company's products or from reliance on this data sheet (unless otherwise agreed in writing). The data in this data sheet will be revised as necessary based on practical experience and continuous product development.
Information is subject to the manufacturer's latest version; the manufacturer's latest TDS prevails.
The technical parameters on this page are taken from the product's original manufacturer technical datasheet, the copyright of which belongs to the manufacturer. If a rights holder considers the presentation inappropriate, contact us for verification and handling.
Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
