Poly Crimp™ Seals - Patented Th e Finneran patented polypropylene Poly CrimpTM seal fi ts virtually any 12x32mm sample vial with a crimp style fi nish. Th e Poly CrimpTM seal snaps on and off with crimping being an option for a tighter seal. Poly CrimpTM seals are available in a variety of colors for easy sample identifi cation.