Corning 430282 500mL Polystyrene Storage Bottle Plug Seal Cap, Case of 24 por | Jul 23, 2026Catalog Number (REF): 430282. 45 mm polyethylene plug seal cap provides an airtight seal. Cap Style: Plug Seal Cap. Product Type: Disposable Laboratory Storage Bottle. Cap Material: High-Density Polyethylene (HDPE).