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The transparent adhesive and sealant compound is a one-component adhesive and sealing compound of a altered polymer hardening with air moisture to an elastomere.
Application: suitable for many grounds, such as glass, glazed surfaces, enamel and varnished wood, can be applied without primer. SikaflexΒ® 521 FC is not suitable for PP, PE, Teflon and bitumen grounds, for underwater or expansion joints.