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  • Sciencware® Stopcocks

    Bel-Art - SP Scienceware

    2-way and 3-way Connections This polypropylene stopcock has a detachable, watertight and inert Teflon® PTFE plug that contacts any fluid being dispensed. The barbed fitting end accepts 6.4 to 9.5mm (1/4 to 3/8") I.D. tubing. Three-way models allow connection of two or three arms. Pressure rating…

  • Teflon Double Oblique Bore Stopcock

    DWK Life Sciences (Kimble)

    With nut, washer and O-ring Two mm bore

  • Teflon Straight Bore Stopcocks

    DWK Life Sciences (Kimble)

    Complete with nut, O-ring, washer For replacement in glassware originally supplied with Teflon straight bore plugs

  • Scienceware® Stopcocks

    Bel-Art - SP Scienceware

    2-Piece design requires no lubrication A quarter turn shuts off flow. Maximum pressure rating: 48 KPa (7 psi), 50cm of water. Easy, snap-together assembly creates a tight seal Select a size betweento fit tubing of 3/8 or ½" (9.5 or 12.7mm) I.D. Barbed connections

  • Miniature Stopcocks. The low friction properties of high density polyethylene allows for easy turning of key which requires no lubricant, thus eliminating blockage of the bores with grease.

  • Polypropylene with Teflon® TFE plug No lubrication required Offered in 2 mm and 4 mm bore sizes Arms are five-mm bore, serrated to take 1/4 to 7/16 inch rubber tubing

  • Stopcocks

    United Scientific Supplies

    These leak-proof, economical polypropylene stopcocks have a PTFE plug and serrated ports that accept tubing from 6mm to 10mm in diameter. 

  • PTFE Straight Stopcock Plugs

    DWK Life Sciences (Kimble)

    PTFE stopcock plug has a 1:5 taper PTFE  is chemically-resistant and self-lubricating

  • Replacement stopcock plugs with inlet feeds for rotary evaporators. Codes -08, -10 for Buchi assemblies and -20 for Heidolph 4000 series. All plugs are 19/38.

  • T-Bore stopcock plugs available in borosilicate or 1:5 PTFE.

  • With 4mm bore stopcock for rapid removal of contents without disturbing the general arrangement of the apparatus. Stopcock is separated from lower section by 28/15 joint. Neck opening is standard 10.2cm (4"). For joint clamp, order 7669-12. Use 6496 Cl

  • Similar in design to CG-1360 but with the addition of a 2mm PTFE stopcock in the return tube. Stopcock stops the flow after the extraction is complete. For samples of 1 liter plus approximately 200mL of extracting solvent. Extractor has a 45/50 top outer joint and a 24/40 inner joint on the uptake…

  • Stopcock Plug, Glass, Straight Bore, Synthware, Multiple Bore and plug sizes available.

  • Buret No Stopcock 50ml

    DWK Life Sciences (Kimble)

    Class B straight bore buret barrel only Furnished without stopcock Lubri-Flo® stopcock barrel 50 mL

  • Threaded vacuum stopcock comes with PTFE plug with hooded, bakeble handle. Needle valve version permits smooth valve adjustment down to 0.1 cc/min flow rate. Easy action version threads into heavy wall glass barrel also permitting smooth adjustment. Do

  • Stopcock, 4 mm, w/o Plug

    DWK Life Sciences (Kimble)

    Without Teflon plug Offered in 4 mm bore size; see 8682B34 for stopcock

  • O-Rings available. Three-way high vacuum stopcock for use in combining materials in proportion or as common feed distributed in proportion. Easy action plugs act independently of each other and are connected to a common tubulation through a variable opening. Supplied with FETFE O-Rings. Stem O.D.…

  • Stopcock Assembly

    Thermo Scientific Nalgene

    …interface visible down to stopcock. Polypropylene funnel and screw closure are chemically inert, translucent, autoclavable and have no known solvents at room temperature. Susceptible to softening and swelling from strong oxidizers and aggressive solvents. TFE stopcock assembly has excellent…

  • …ground glass joints, glass and metal stopcocks and valves, and for sealing desiccators, anaerobic culture jars and similar utensils Its mobility in film-like quantities makes it excellent not only for lubricating, but for preventing the freezing of stopcocks, ground joints, etc., which are…

  • Replacement Stopcock Plug, T-Bore, Glass, Synthware, Multiple Bore and plug sizes available, solid glass plug.

  • Straight bore stopcock plugs, available in borosilicate or PTFE. PTFE plug Corning# 7681.

  • KIMAX buret with a PTFE plug. RAY-SORB processed to protect liquids sensitive to light of shorter wave lengths. KIM-KAP dust cap is included White ceramic enamel scale. Subdivisions: 0.1mL Capacity: 50mL Replacement stopcock is 41500F-2 (8682B22).

  • …is established by ASTM E 287 and they are calibrated in accordance with ASTM E 542. Tips are carefully drawn from accurate bore tubing to ensure proper drainage rates. This buret has colored markings, fine, sharp lines and large easy-to-read numbers. The stopcock barrel has a smooth micro-finish.

  • High Vacuum Valve Plug, Synthware, Size: 0-4, 0-8, and 0-12mm available, Stem Material: PTFE,O-rings Material: Viton.

  • Synthware vacuum adapter with a serrated hose connection turned 90 degrees to the standard taper inner joint. The PTFE stopcock has a 2 mm bore and is used to regulate the flow of gasses or liquids into reaction systems.

  • The StopCock discharge cocks fits all containers with G 3/4" connection threads. Thread adapters facilitate connection of cocks to nearly all containers. Fitting hose nozzles for StopCock available with outer thread Tight-closing for complete seal Especially effortless With…

  • Stopcock Assy 25ml

    Thermo Scientific Nalgene

    Pack of 2 Stopcock Assemblies, 25 mL

  • …of the materials polyethylene or polypropylene cannot be used for solvents. The spigot StopCock PA is made of electrically conductive polyamide and therefore perfectly suitable for solvents. StopCock PA fits onto 3/4" outer threads and with the supplied adapter onto 3/4" inner…

  • Vacuum adapter with 2mm bore stopcock on side arm.

  • Addition Funnel, Pressure Equalizing, PTFE Stopcock, Synthware, Capacity: 25-1000mL available, Joints: 14/20 or 24/40 available, Stopcock Bore: 2 and 4mm available. Funnels come with PTFE stopcock in pressure equalizing line.

  • Adjustable flow stopcock with standard taper 24/40 joints.

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