Polytek PlatSil 71/73 Retarder 4oz

Article number: 066614
Availability: In stock (7)

PlatSil® 71/73 Part R Retarder can be used with all PlatSil® silicone liquid rubbers to slow the cure and yield a longer working time. Add 71/73 Part R to Part A prior to mixing with Part B. Adding ~1% of 71/73 Part R to the total mixed weight of PlatSil A+B roughly doubles the working time. Adding ~2% of 71/73 Part R triples the working time. Do not use more than 4% as the system may not cure at all. Experiment on a small scale before making a larger mix.

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