Heavy Duty Vacuum Carboy, PP bottle, white PP screw closure TPE gasket Extra thick walls give these polypropylene carboys added strength. Choose these carboys when service conditions are most extreme. Useful as vacuum trap, will hold full vacuum up to 8 hours. Leakproof† and autoclavable. For convenience, use with 2158-00XX Quick Filling/Venting Closure or 2162083X Filling/venting series in vacuum applications. Supplied with 83B closure with TPE gasket. . Nominal Shoulder Capacity: 20 l (5.5 gal) Brim Capacity: (approx.) 24 l . Autoclavable/Leakproof† . NOTE: For best results, autoclave using a properly vented closure.