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
Med Vet International Titanium 3-Hole Plate, J1072NAT
TTA (Tibial Tuberosity Advancement) CagesTitaniumPlate 3 hole x 42mm
Grainger Stopper Sz 7 30 mm BDia Black 0 PK15
The 16ZD65 is a Grainger 4-Ton Electric Chain Hoist with a lifting height of 20 feet. It has a lifting speed of 8 feet per minute and can lift up to 8000 pounds. This electric hoist requires a 230 volt 3 phase power source and has a load chain with a diameter of 5/16 inches. The hoist trolley has a span of 4 feet and utilizes a push button control. This chain hoist is designed for industrial lifting applications.
Enterprise Technology Solutions 40-Sheet Ez Squeeze Two-Hole P
40-Sheet Ez Squeeze Two-Hole Punch 9/32 Holes Black/silver
Chemglass Life Sciences Septum Stopper, Sleeve Type, For 29/26-29/42 Outer Joints, Red
Septum Stopper, Sleeve Type, For 29/26-29/42 Outer Joints, Red. Sleeve type stoppers with a hollow plugs and sleeve extensions that folds down over the neck of a vessel, tubing, etc. The diaphragm can be punctured with a syringe needle, re-sealing after the needle is withdrawn.
Research Products International Corp Laboratory Grade Rubber Stoppers w/Hole, BLK SBR Rubber, Size #10 1/2, 53 x 45 x 25mm, 7 per Package
Laboratory Grade Rubber Stoppers with hole are offered in a wide range of common sizes for most laboratory applications. Available standard black SBR rubber. Material can typically withstand temperatures up to about 100°C (212°F). Rubber stoppers with hole are molded in the USA according to standard industry size specification.
Packaged in approximately one pound packages.
Cayman Chemical 96-Wel SolId Plateblack 1ea
An uncoated flat-bottom 96 well plate for use in fluorescence or chemiluminescent assays.
Cayman Chemical 384-Wel SolId Platelow vol 5ea
A 15-LO-1 inhibitor (Ki 3.3 UM) a P. falciparum aspartate carbamoyltransferase inhibitor (IC50 3.32 UM) reduces LPS-induced expression of the mRNAs encoding TNF-a iNos Il-1B Il-6 Il-8 and Il-12b in mouse lung slices at 50 UM inhibits glutamate-induced increases in lipid peroxidation and mitochondrial superoxide formation as well as cell death in mouse HT22 cells at 10 UM
Ace Glass, Inc. Pk6 50mm 10 microliter, 26 gauge, 20° bevel removable needle syringe.
Pk6 50mm 10 microliter, 26 gauge, 20° bevel removable needle syringe.
Research Products International Corp Laboratory Grade Rubber Stoppers, Green Neoprene Rubber, Size #10 1/2, 7 per Package
Laboratory Grade Rubber Stoppers offered in a wide range of common sizes for most laboratory applications. Available in green neoprene rubber that is resistant to chemicals and ozone deterioration or standard black SBR rubber. Solid rubber stoppers are molded in the USA according to standard industry size specification. Packaged in approximately one pound packages.
Chemglass Life Sciences Rubber Stopper, #4, One Hole, Black
Rubber Stopper, #4, One Hole, Black. These stoppers are suitable for practically all general laboratory uses. Composition ensures resiliency and pliability over a long period and withstands laboratory conditions without hardening. The dimensions are in accordance with specifications established by the N.B.S. and are low in free sulfur (1/2%). Autoclavable at 250F for 30 minutes under water or steam conditions only (not dry heat). End user must test for their specific application. Diameter: Top (26mm), Bottom (20mm). Length: (25mm). Diameter of hole: (5mm).
Grainger Stopper Sz 15 83 mm BDia Black 0
The 16WC60 is a 60-watt, 120-volt A19 medium base LED light bulb made by GE Lighting. This bulb produces 800 lumens of soft white light at a color temperature of 2700K. It has an estimated yearly energy cost of $7 and an average life of 15,000 hours. This bulb can be used in enclosed fixtures and is dimmable. It measures 4.25 inches in length and 2.375 inches in diameter. The 16WC60 provides an energy-efficient LED alternative to traditional incandescent bulbs.
Research Products International Corp Laboratory Grade Rubber Stopper, Black SBR Rubber, Size #4, 26 x 20 x 25mm, 33 per Package
Laboratory Grade Rubber Stoppers offered in a wide range of common sizes for most laboratory applications. Available standard black SBR rubber. Solid rubber stoppers are molded in the USA according to standard industry size specification. Packaged in approximately one pound packages.
Chemglass Life Sciences Stopper Only, Butyl Rubber, 5.4mm OAH
Stopper Only, Butyl Rubber, 5.4mm OAH. For CLS2408 Hungate Anaerobic Tubes.