Osmo End Grain Sealing Wax Clear (5735) 375ml Free Priory Polishes Lint Free Cloth. Clear wood finish developed especially for sealing end grains in order to protect these against cracks resul- ting from weathering. Osmo End Grain Sealing Wax minimizes water absorption as well as drying-out at end grains. Also protects from the inside as it is absorbed into wood capillaries. Swelling and shrinkage as well as the leakage of wood extractives are reduced.