Hplc Vial Caps found in: 13-425 Closures for 15x45mm Screw Thread Vials, LC Certified Vial Kits, Target DP 9mm Vial Closures, 6 mL Crimp Top Vials, Caps.. thread vials Pre-assembled septa allows for vacuum release where more than half of vial contents will be removed Integral septum caps are an economical choice for HPLC applications Bonded septa caps resist dislodging during injection