Stoppers
Stoppers, also known as bungs, are used to give an airtight seal to laboratory flasks and test tubes by fitting tightly inside the neck of the container and preventing material from spilling. Stoppers can be made of glass, cork, rubber, or silicone. They are typically designed with a conical shape, but straight, flanged, and tapered options are also available.
Stoppers are the preferred choice for many applications requiring a tighter seal or a greater degree of chemical resistance. They also provide a good seal when a solution needs to be shaken or mixed without spilling. Stoppers are generally cylindrical in shape and have a tapered bottom end. They may be marked with a stopper number or size on the top and bottom diameters of the stopper. Sizing can vary among manufacturers.
Stoppers are available in a solid design or with holes known as positions placed in the top. Positions allow easy access to the material contained in the sealed vessel by pipettes, tubing, or other equipment without full removal of the stopper.
What Types of Stoppers Are Available?
• Turnover stoppers have external serrations to create an excellent internal seal combined with a flexible turnover sleeve that folds down over the container’s neck to create a double seal
• Serum bottle or vial stoppers have two or three legs with external serrations or straight sides and a flanged top to create an airtight seal
• Straight bromobutyl plug-type stoppers provide a maximum seal for vials and serum bottles with a straight-wall glass finish
• Ultra-pure, straight bromobutyl plug-type stoppers provide high chemical purity and low gas permeability. They offer excellent performance during freeze drying processes such as lyophilization, where stoppers must remain stable during transfer and sublimination phases
• Silicone recessed septa stoppers are non-toxic and have external serrations to create an effective internal seal
MARIAN MEDICAL INC ACE Stopper, 8Fr/60mm, W/ ACElok Dressing, 1 Each
ACE Stopper. Stoma Accessory. Marian Medical Inc. AP Series. Silicone ACE stopper for stoma closure and tract maintenance. Includes ACElok external fixation dressing. Available in multiple French sizes and lengths. For use in ACE and Malone stoma management. Packaged as 1 each.
Med Vet International Compression Plate 4.5mm, 3 holes, 55mm L, J0427B
Use with 4.5mm cortical screws to produce fracture-site compression.
MSC E.R. Wagner Caster, 4 inch, TPR, Threaded Stem, 165 lb Capacity
This versatile caster is engineered for reliable mobility in industrial and commercial environments. It features a 4 inch diameter TPR wheel, a threaded stem, and offers a load capacity of 165 lb. Its robust design ensures smooth operation and durability.
- Features a 4 inch wheel diameter for easy maneuverability
- Constructed with TPR (thermoplastic rubber) wheel material for durability and floor protection
- Provides a 165 lb load capacity to support various equipment
- Equipped with a threaded stem for secure mounting
- Includes a Delrin bearing for smooth swiveling action
- Hardened-heat treated construction ensures longevity
- Finished with zinc chromate for enhanced corrosion resistance
- Suitable for a wide range of industrial and commercial applications
Cayman Chemical 384-Well Solid Plate (low volume; black), 25 ea
384-Well Solid Plate (low volume; black), 25 ea
Strem, An Ascensus Company 50pcs. Suba-Seal #33 (fits Schlenk tube with male 24/40 joint).
50pcs. Suba-Seal #33 (fits Schlenk tube with male 24/40 joint). . Molecular Weight: . Molecular Formula: . Color/form: Fits neck i.d. 17.5mm Dimensions A 18.0mm B 12.7mm Strem# 96-3000. http://www.strem.com/catalog/v/96-3000/