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Stoppers
Stoppers, also known as bungs, are used to give an airtight seal to laboratory flasks and test tubes by fitting tightly inside a container's neck, preventing material from spilling out. Rubber stoppers are often sized with a stopper number or stopper size, using the stopper's top and bottom diameter dimensions. Sizing can vary among manufacturers. Stoppers are typically designed with a conical shape, but straight and flanged options are also available. Rubber stoppers are available in a solid design or with holes, also known as positions, present on the stopper's top. Positions are used to
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Color: Black. Length (Metric): 2.5 cm Material: Natural Rubber. Product Type: Solid Stopper.
For Use With (Application): Resists petroleum products, fats, oils and organic chemicals. Length (Metric): 2.5 cm Product Type: Solid Stopper. Material: Neoprene.
Material: Silicone. Color: Translucent. Product Type: Solid Stopper. Temperature Range (Metric): -60° to 220°C.
Material: Plastic Foam. Product Type: Plug Stopper. Autoclavable: Autoclavable. Color: White.
Material: Rubber. For Use With (Equipment): NMR tubes, pressure venting or adding reactants via syringe. Product Type: Plug-type Sleeve Stopper. Color: White.
Description: Hollow. Quantity: 10/Pk. Standard Taper Joint: Thread Size: 14/23 Cone NS. Material: Borosilicate Glass.
For Use With (Application): Organic Synthesis. Quantity: 1 Ea. Size: 14/20. Autoclavable: Autoclavable.
Diameter (Metric) Inner: 1.3cm For Use With (Application): Lyophilization. For Use With (Equipment): Fits 0.7cm I.D., 1.3cm O.D. mouth of vials Hardness: 46 Shore A.
For Use With (Application): General purpose use. Length (Metric): 2.5 cm Size: 6. Color: Black.
For Use With (Application): Resists petroleum products, fats, oils and organic chemicals. Length (Metric): 0.25 cm Size: 6.5 Color: Green.
For narrow-aperture containers
Material: Bromobutyl Rubber. Color: Gray. Autoclavable: Autoclavable. Product Type: Straight Plug Stopper.
Description: Includes: 20 mm extra coarse fritted disc. Diameter (Metric) Inlet/Outlet Tube: 0.8 cm For Use With (Equipment): 03-038 series 500 mL gas washing bottle, Pyrex™ bottles. Standard Taper Joint: 40/50.
Diameter (Metric): 13 mm. Diameter (Metric) Inner: 7 mm. For Use With (Application): Lyophilization. For Use With (Equipment): Fits 7mm I.D., 13mm O.D. mouth of serum bottles and vials
Diameter (Metric): 13 mm. Diameter (Metric) Inner: 7 mm. Autoclavable: Autoclavable. Color: Gray.