Lab Stoppers

These PYREX® gas washing Standard Taper stoppers are replacements for the 500mL gas washing bottles (No. 31760-500EC). Sidearm tubulations are 8mm O.D. A 40/50 Standard Taper stopper is used to seal the top to the base. This Standard Taper stopper incorporates a tube with a 20mm diameter extra...

Designed for use with Millipore stainless steel vacuum filter holders Stopper Size: No. 8 Hole I.D.: 9.5mm (3/8 in.) Silicone rubber construction

Snap-On Stoppers provide a quick and efficient solution for sealing laboratory containers. Their design allows for easy application and removal, making them ideal for routine laboratory tasks. Made from durable materials, these stoppers maintain a reliable seal under various conditions. They are...

The recommended choice for use with organic chemicals and solvents, pressure applications, and cannulation techniques:Precision Seal septa are designed specifically for the rigorous requirements of chemical applications. •Precision fit: Precision Seal septa have a longer, tapered plug that seats...

Hollow plug type With sealed bottom and vertical penny head

The hollow stopper is light in weight, yet very strong to reduce chipping and breakage, thus minimizing replacement costs. A barrel-shaped head means it is easy to clean and even easier to rotate in or out. Grooves in the sides help prevent slippage. The flat top allows the stopper to stand on its...

Sleeve stopper septa are manufactured from pure natural rubber for excellent resealability when used for cannulation techniques or from FKM rubber for high chemical resistance. Natural rubber septa are available in red and white colors and a soft rubber formulation that contains no fillers or...

Sleeve Type Septum stopper made from natural white rubber for use with 5mm NMR tubes.

Machined from solid PTFE with trapezoidal seals for medium to high vacuum performance up to 280C (540F). Synonyms: flask stopper; lab stopper; stoppers

1700 Series, gastight syringes with fixed needles. Ensure the integrity of your experimental conditions with the SYNTHWARE Septum Stoppers, Sleeve Type. This reliable tool is specifically designed to provide a tight seal for laboratory containers, preventing the escape of liquids or gases, and...

PennyHead Glass Hollow Stoppers are designed to provide a reliable seal for laboratory glassware, preventing contamination and preserving experimental conditions. Their construction from high-grade glass ensures chemical resistance and durability. The hollow design allows for an effective seal while...

This rubber stopper is an accessory for Kimble 4L flasks 27060-4000, 27065-4000, and 27070-4000, as well as 90mm funnnel 953805-0090.

These blue and white PYREX® stoppers are made from linear high-density polyethylene and have closed bottoms to conform to Standard Taper stopper dimensions. The three rings on the plug provide an efficient seal. This improved design fully protects the neck in the event of accidental tipping. These...

Uses include outgassing NMR tubes, pressure venting or adding reactants via syringe. Hollow, plug-type stopper fits into the neck of the glassware apparatus Sleeve extension fits over the neck for a secure seal Diaphragm can be punctured with a syringe needle Series 774261 may be used at up to 125...

Well-known as the best quality rubber turn-over closure with serrated stopper, Suba-Seal brand is available exclusively from Sigma-Aldrich. Ideal for air and moisture-sensitive chemistry procedures. After piercing with non-coring needle, rubber closes puncture, providing air and moisture tight seal...

A back-seal, solid plug for sealing coulmn ends. Supplied with one FETFE O-Ring.

Ensure the integrity of your critical scientific experiments with the Chemglass Stopper, available in flask length and a pennyhead design. Manufactured by an industry-leading brand, it is designed to provide a secure seal and prevent contamination of your valuable samples. Perfectly suited for a...

Nonthreaded, wide, thick flanges. Synonyms: flask stopper; flask stoppers; stoppers