2.0 mL, 11 mm Poly Crimp Seal Caps: Snap-On or Crimp The Poly Crimp seal is versatile, working as either a snap-on or crimp-top cap. Simply use a standard crimping tool to secure the Poly Crimp seal onto any crimp-top vial. It’s that easy! 2.0 mL, 11 mm Poly Crimp Seal Caps: Snap-On or Crimp Select Catalog # below Additional Product Details