Its a subfloor - but a sealer or finish is do-able. Some have used waterbase poly. My plan is to lay down several rolls of 3 mill sound/accoustimat from HD, then lay down 7/16" 4x8 sheets of OSB over this. This will enable a stronger flexible and softer floor for the machines to roll around. Its a bit of overkill - because this DriCore is close to 3/4" and it comes in 1" thickness too - yet as it is - the floor can handle the machinery just fine. It has a glued on plastic spacer that serves as a moisture barrier and allows an air gap between it and the concrete. This subfloor floats - with a 1/4" gap around the wall perimeter so it will offlload moisture and breathe around the wall perimeter ...installs relatively fast - tapping the tongue and groove joints together - and cutting one panel in half for a starter row so the seams/joints stagger like a brick lay.
If you can zoom in on the second photo you can see the underside of the panels and how it was designed to be lifted from the floor and lock together the plastic laminated to the OSB. As Phak1 wrote - it resembles a modified waffle design
