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 The diaphragm can be punctured with a syringe needle, re-sealing after the needle is withdrawn. Available in either RED or WHITE rubber.

13.5 Rubber Stopper Similar to CG-3026 except with one hole. 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…

Suba-Seal® septa are a flanged stopper with a hollow plug and sleeve extension that folds down over the neck of the vessel. In addition to the pull over sleeve, Suba-Seal® stoppers have a series of annular serrations on the plug portion of the septa. Each of these serrations depress along…

Three twist-off seals permit easy conversion from a solid to a one, two, or three-hole stopper. Soft, resilient, natural rubber demonstrates exceptional aging characteristics and withstands repeated autoclaving. Autoclavable at 250°F for 30 minutes under water or steam conditions only (not…

Hollow stopper with closed bottom

PTFE stopper has a Polypropylene extraction nut permitting easy removal of the stopper from the glass outer joint. The 14/20 and 19/22 are solid, while the larger sizes are hollow.

Reusable .005in thick PTFE sleeve for standard taper joints provides a grease-free seal.

Flask length PTFE stopper with color coded handle.

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…

PTFE stopper for use in flask length outer joints.

Inexpensive, tapered stopper provides for a tight, leak-proof fit while the top ring permits the stopper to be easily removed. Stoppers are made of yellow Polyethylene

Cap style stopper to be used with apparatus having a spherical ball joint. For clamp see CG-150.

All sizes are solid with the exception of the #38 (CG-3018-08) which is hollow.

Hexagonal shaped head of stopper prevents it from rolling off of the bench top. Flat surface will also permit stopper to be inverted and placed on end, thereby preventing possible contamination of ground surface.

PTFE stopper adapter is similar to CG-3002-L but with the addition of one female NPT port in the center. The optional PTFE compression fittings provide a convenient way to insert probes or connect PFA tubing or FEP tubing to reactors or flasks. PTFE stopper has an extraction nut permitting easy…

Flask length PTFE stopper has a Polypropylene extraction nut permitting easy removal of the stopper from the flask. All sizes are solid.

Similar to CG-3026 and CG-3027 except with two holes. 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…

Solid stopper with closed bottom.

For use with the AF-0060 or AF-0061 manifolds or any Airfree® component with an o-ring as a closure. Supplied complete with one Viton O-Ring.

Flask length solid penny head stopper with low actinic red stain.

Hollow PTFE stopper.

PTFE stopper is similar to CG-3002-L but with the addition of one female NPT port in the center for connection of compression fittings or pressure/vacuum gauges. PTFE stopper has an extraction nut permitting easy removal of the stopper from the glass outer joint.

Flathead design allows stopper to be inverted and placed on end thereby preventing contamination of the ground surface.

For use in standard taper outer joints. Economy style with open bottom.

Cap style stopper for use with inner joints.