Screw Cap Hplc found in: LC Certified Vial Kits, Bonded screw closures, N 9, Screw closures/caps, N 10, Screw plug 1/8in for cap, PTFE, 2/pk, Screw plug 1.. open top closures fit all SUN-SRi 13-425 screw 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