Cure & Seal LV 25% J20UV provides a combination of curing, sealing and dustproofing for freshly finished interior or exterior concrete surfaces. It meets ASTM C-309 specifications as an outstanding curing compound and is an excellent dustproofer and surface sealer. Cure & Seal LV 25% J20UV will resist many chemicals, help protect against staining and allows easy removal of mortar splatters.