{"id":8635,"date":"2026-06-16T12:53:48","date_gmt":"2026-06-16T04:53:48","guid":{"rendered":"https:\/\/topsilsilicone.com\/?p=8635"},"modified":"2026-06-16T13:33:32","modified_gmt":"2026-06-16T05:33:32","slug":"pot-life-too-short-how-to-choose-rtv-2-silicone-working-time","status":"publish","type":"post","link":"https:\/\/topsilsilicone.com\/ru\/pot-life-too-short-how-to-choose-rtv-2-silicone-working-time\/","title":{"rendered":"Pot Life Too Short? How to Choose RTV-2 Silicone Working Time"},"content":{"rendered":"

\u0412\u0430\u0448 \u0421\u0438\u043b\u0438\u043a\u043e\u043d RTV-2 <\/a>starts thickening before pouring is finished.<\/p>\n\n\n\n

Vacuum degassing is not completed before the silicone begins to gel.<\/p>\n\n\n\n

Large molds cannot be filled smoothly.<\/p>\n\n\n\n

Fine details are not fully copied because the silicone stops flowing too early.<\/p>\n\n\n\n

Operators rush the mixing process and the final mold quality becomes unstable.<\/p>\n\n\n\n

If this happens, the problem is not always \u201cbad silicone\u201d. Very often, the pot life is too short for your real production process.<\/p>\n\n\n\n

Pot life is not just a number in the TDS. It must match your actual working steps:<\/p>\n\n\n\n

mixing time + vacuum degassing time + pouring or brushing time + leveling\/detail flow time + safety margin<\/p>\n\n\n\n

Fast curing is useful only after the silicone gives you enough working time. If the material gels before your process is finished, faster curing will only create bubbles, flow marks, waste and unstable mold quality.<\/p>\n\n\n\n

This guide helps you choose the right RTV-2 silicone working time based on your real application.<\/p>\n\n\n\n

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Quick Answer: How Much Pot Life Do You Really Need?<\/h3>\n\n\n\n

The best pot life is not the fastest one.<\/p>\n\n\n\n

The best pot life is the one that allows your team to finish the whole process before the silicone becomes too thick.<\/p>\n<\/div>\n\n\n\n

Your Process<\/td>Suggested Pot Life<\/td>Why<\/td><\/tr>
Small simple mold, no vacuum<\/td>10\u201320 min<\/td>Short operation time, simple structure<\/td><\/tr>
Candle, soap or craft molds<\/td>15\u201330 min<\/td>Enough time for weighing, mixing and pouring<\/td><\/tr>
Small detailed resin molds<\/td>20\u201340 min<\/td>Better flow into fine details<\/td><\/tr>
Vacuum degassing required<\/td>30\u201345 min<\/td>Degassing uses part of the working time<\/td><\/tr>
Large concrete or gypsum molds<\/td>30\u201360 min<\/td>Larger volume needs slower and more stable operation<\/td><\/tr>
Brush-on mold making<\/td>30\u201360 min<\/td>Brushing and layering need longer workable time<\/td><\/tr>
Deep molds with undercuts<\/td>30\u201345 min<\/td>More time for flow, leveling and air release<\/td><\/tr>
\u042d\u043b\u0435\u043a\u0442\u0440\u043e\u043d\u043d\u044b\u0435 \u0433\u043e\u0440\u0448\u043a\u0438<\/td>20\u201360 min or adjustable<\/td>Depends on filling size and production line<\/td><\/tr>
Distributor general-purpose grade<\/td>20\u201330 min<\/td>Easier for most end users to handle<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

The Real Formula: Required Pot Life<\/h2>\n\n\n\n

Before asking for \u201cslower silicone\u201d, calculate your real process time first.<\/p>\n\n\n\n

Production Step<\/td>Example Time<\/td><\/tr>
Weighing and mixing<\/td>3 min<\/td><\/tr>
Vacuum degassing<\/td>6 min<\/td><\/tr>
Pouring<\/td>8 min<\/td><\/tr>
Leveling and detail flow<\/td>5 min<\/td><\/tr>
Safety margin<\/td>5\u201310 min<\/td><\/tr>
Recommended pot life<\/td>30 min or more<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Required Pot Life \u2265 Mixing Time + Degassing Time + Pouring \/ Brushing Time + Leveling Time + Safety Margin<\/p>\n\n\n\n

For example, if your vacuum degassing takes 6 minutes and pouring takes 8 minutes, a 10-minute pot life is usually not safe. Even if the silicone is technically still \u201cworkable\u201d, it may already be too thick for smooth flow and bubble release.<\/p>\n\n\n\n

\"rtv-2-silicone-required-pot-life-formula\"