Rustins Quick Drying MDF Primer Sealer is a water based, clear primer sealer suitable for all grades of MDF. It is designed for both interior and exterior use, offering a low odour and a quick drying, one coat application. This sealer can be overcoated with paint or varnish. It conforms to the Toys Safety Regulations 1995, BS EN 71 Part 3, with hazard safety codes Xi, R36. The clear finish of this MDF Sealer makes it versatile, suitable for use under varnish or paint, unlike white MDF sealers. It is touch-dry in just 30 minutes and recoatable in only 2 hours, allowing for fast project completion. Approximate coverage is 6m square per 500ml, with this 1L tin providing total coverage of approximately 12m square.