Silicone Rubber Septum for Reliable Sealing in High-Pressure Liquid Handling Systems

Polyethylene barrel with a rubber-tipped plunger (usually black rubber) Pre-lubricated with silicone oil; may contaminate samples. Satisfactory for aqueous solutions. Very reliable seal; Often used for medical practices; NOT RECOMMENDED for organic solvents which often dissolve the oil and swell the rubber, causing the plunger to jam.

Tuf-bond Septa (9711D10 to D45) Thickness: 100 mils Of silicone rubber with PTFE facing 10 mils thick Septa of butyl rubber, silicone rubber or rubber-laminated PTFE are available on special order. Septum diameter indicated in listings. Compare this item Septum stopper,13mm, Hungate Style, Black Butyl Rubber Bellco Glass

purposes in Aijiren systems Pre-slit PTFE/red rubber – 8RT1X Pre-slit, high quality red rubber with a thin (0.003") layer PTFE. For applications using a very thin-gauge syringe needle or in instances when a vacuum may form in the vial Silicone rubber High quality, silicone rubber laminated to PTFE. Use when excellent resealing qualities are a

Jul 30, 2013 · Silicone rubber has high insulation resistance of 1–100 TΩ m, and its insulating properties were stable over a wide range of temperatures and across a wide frequency spectrum [ 38 ]. There was almost no decline in performance even when immersed in water, making silicone rubber an ideal insulating material.

Three Layer Septa is made of preconditioned silicone rubber and is 3.81 mm (0.150 in.) thick. The average life of these septa is up to 100 injections with a 26s gauge needle. The maximum operating temperature is 200° C. Preconditioned silicone rubber septa, 3.81 mm (0.15“) thick . Compare this item.

A thin fi lm of silicone or hydrocarbon grease must be used on all standard-taper joints to prevent seizure upon cooling. Alternatively, the apparatus may be assembled cold and then warmed with a heat gun while fl ushing with dry nitrogen.

Silicone rubber septa. High quality, silicone rubber laminated to PTFE. Use when excellent resealing qualities are a must. Septum resists coring and is recommended when multiple injections are required. Preferred septa for use in liquid chromatography applications.

Aug 6, 2013 · Remove the stopper from the NMR preparation tube and replace it with a rubber septum. A bleed needle should be inserted through the septum to flush out the small volume of air in the septum. Using the techniques described in part 3, transfer 1 mL of dry, degassed, deuterated solvent into the Schlenk flask containing the compound to be analyzed.

National Scientific. 20mm Crimp seals with prefitted septa for headspace vials Seals with pre-inserted septa are convenient and minimize contamination due to handling Use magnetic seals with CTC/Leap* Technologies, Gerstel* and other magnetic transport autosamplers PurePak* PTFE/Silicone seals are packed. Compare this item.

292461002. GL 45. 42. 3. $804.91 /Pack of 100. In Stock. Add to Cart. Septum for Piercing, Use with Open Topped Screw Cap.

Chemglass. Replacement septa for use with MW-102 open-top screw caps on Minum-Ware® glassware components. Septa are made of silicone rubber with one side having a RED PTFE face, while the opposite side has an ultrathin covering of polypropylene to prevent needle coring when penetrating septa. Compare this item.

A rubber septum provides a positive seal for only a limited number of punctures-depending on needle size. Therefore, always reinsert the needle through the existing hole. It is also advantageous to put a layer of silicone or hydrocarbon plastic tubing needle-tubing connector 17, 18, or 20 gauge needle rubber stopper septum inlet plastic tubing

Jul 2, 2013 · Remove the stopper from flask 1 while under a positive pressure of nitrogen (i.e., nitrogen flowing out of the flask) and replace with a rubber septum (Fig. 14, B). A needle should be inserted through the septum to allow the small volume of air in the septum to be flushed out.

Headspace vials, septum, and caps can be purchased in various quantities separately or together as convenience kits to fit your laboratory needs. Choose septa materials to meet your needs. Gray Butyl Stoppers are an economical septum for lower temperature (125°C) or low-pressure applications.

HelixMark® pharmaceutical-grade Silicone Stoppers are ideal for a tight, reliable seal for glass tubes, vials, and flasks. These platinum-cured silicone stoppers have full traceability to raw materials, contain no peroxide catalysts, and are autoclavable. Available in 14 standard sizes. We also offer stoppers with pre-drilled holes.