KO-815 Elcon — heat-resistant silicone varnish up to +300 °C
Colourless silicone varnish for metal and concrete up to +300 °C, dries at 150 °C; serves as the base of KO-813 silver enamel.

For heating networks, Elcon produces OS-51-03 organosilicate composition on silicone varnish with alkyd resin, pigments and fillers. It is applied to the outer surface of pipelines in tunnels, utility collectors, technical crawl spaces, inside and outside buildings. There are versions up to +150 °C and up to +300 °C; the latter has electrical insulating properties — volume resistivity of at least 1·10¹⁴ Ohm·cm and dielectric strength of at least 10 kV/mm.
| Manufacturer | Elcon — OOO “Elcon”, Novocheboksarsk |
|---|---|
| Type | heat-resistant coatings |
| Base | organosilicate composition: silicone varnish, alkyd resin, pigments, fillers |
| Colour | black, red-brown, white, green, grey, blue, bright red, red, brown, light blue, beige, light grey, yellow; tinting to RAL K5 |
| Packaging | 25 kg |
| Application method | air spray (17–25 s), airless spray (30–45 s), roller or brush (25–35 s); 2–3 cross coats with drying to “tack-free” 0.5–2 h; preparation St 3 or Sa 2–Sa 2.5, degreasing with Elcon R |
| Application temperature | from −30 °C to +40 °C; relative air humidity not more than 80 % |
| Drying | to degree 3 — 2 h at (20±2) °C; full cure at least 24 h; installation — not earlier than 3 days |
| Key properties | Heat resistance: from −60 °C to +150 °C or up to +300 °C (two versions), Non-volatile matter by weight: at least 40 %, Adhesion: not more than 2 points (up to 150 °C), not more than 1 point (up to 300 °C), Volume resistivity (version up to 300 °C): at least 1·10¹⁴ Ohm·cm; after 24 h at 95 % humidity — at least 1·10¹² Ohm·cm, Dielectric strength (version up to 300 °C): at least 10 kV/mm |
| Compatible materials | no priming required |
| Shelf life | 24 months from the date of manufacture; storage from −30 °C to +40 °C |
| Standards | TU 2312-370-05763441-2001 |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Colourless silicone varnish for metal and concrete up to +300 °C, dries at 150 °C; serves as the base of KO-813 silver enamel.
Silicone enamel for steam pipelines, furnaces and steel structures up to +700 °C, as well as for painting concrete and brick in atmospheric conditions.
Silicone enamel for low-carbon steel parts over phosphated and non-phosphated surfaces, heating up to +700 °C.
Vapour-permeable silicone enamel for facades, concrete, equipment and steel structures; the grey-silver version withstands 400 °C.
Silicone enamel for equipment, oil and gas pipelines and chimneys under high humidity and heating up to +700 °C.
Silver barrier enamel with flake aluminium for steel structures and equipment; topcoat over Elcon Zintech zinc primer.