FLO Oil Filters Black FLO Stainless Steel Reusable Spin-On Oil Filter. Unlike glued paper filters, the FLO Oil Filter pleat seam is welded and able to withstand up to 600 degrees. Should be the last filter an owner ever needs; this high tech filter technology is widely used in all types of auto racing including NASCAR, Indy type cars, Formula 1 and in the Aerospace industry where filtration is of the utmost importance.