CRL 33S silicone sealant consists of a high quality formula that provides the strength and durability that you expect from a product from CRL and at a very competitive cost that you also expect from PKsupplies.com. This silicone sealant cures at room temperature and since it is a 100% silicone elastomer, this caulking product does not require additives such as activators, stabilizers or catalysts to achieve optimum performance like most of those retail brands. CRL 33S silicone sealant is expressly intended to join a variety of materials including glass, aluminum, stainless steel, plastics and metal alloys. Working with glass? Our sealant is perfect for joining and sealing specialty glass enclosures and partitions, multi-pane windows, steel windows, assemblies, skylights, entries and glass block configurations. Don't forget to caulk your showers, baths, sinks, toilets and other sanitary installations. CRL 33S clear, white, translucent white and tan colors contain an additive that makes the cured silicone resistant to mildew. CRL 33S silicone sealants have a broad operating temperature range of -80F to 400ºF and can be applied at outdoor temperatures between -35 to 140 degrees F.