VWR Vwr Stopper Red 10/30 Pk100 Unit CS. The polyethylene plastic film can withstand the total vacuum of most liquids and gases and provides a high glass-like sanitized product. The expanded polyethylene can be used as a sealant to create a barrier between the workpiece and the environment. A common use is for secondary containment leak detection and fume hoods. Polyethylene can be used as a stopper for asbestos cement and cement work. Specifications for VWR Vwr Stopper Red 10/30 Pk100 20210: Manufacturer: Advantech Manufacturing Color: Red Package Contents: VWR Vwr Stopper Red 10/30 Pk100 20210 / 89097-538 The VWR Vwr Stopper Red 10/30 Pk100 20210 is a quality addition to the Advantech Manufacturing lineup. For more great deals on Laboratory Consumables by Advantech Manufacturing please browse our Advantech Manufacturing Laboratory Consumables page. VWR Vwr Stopper Red 10/30 Pk100 20210 Unit CS