Rigidizer .

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rigidizer for kaowool . Long known for sealing in refractory wool fibers and an allowing shaping while still wet . This product is applied over kaowool (aka cerachem ) to bind the surface together. It's easily applied with an inexpensive spray bottle or brush. Sold in 500 ml bottle. This product cannot be shipped when temperatures are below freezing . As freezing renders it ineffective. Show more