Do I need to sand the surface between coats of SEAL-ONCE ACRYLIC POLY?

No, it is not necessary to sand the surface between coats of SEAL-ONCE® ACRYLIC POLY, if the proper application procedures have been followed. If the first coat has been allowed to cure for more than 24 hours, lightly sand the surface with 220 grit sandpaper. Remove all dust after sanding to ensure a clean, debris-free surface prior to applying the second coat of SEAL-ONCE ACRYLIC POLY.