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RUBBER & SILICONEStandard parts. Custom solutions.

Transparent Vial Stopper

Transparent Vial Stopper

It is not a secret that rubber stoppers can be customized in any kind of way, basically. From the kind of rubber used for the manufacturing process, over shape and size, and all the way to something as simple as colour – stoppers can basically be infinitely customized. However, sometimes, you don’t really need to dye your rubber stoppers in any colour, and something transparent is exactly what you need.

A transparent vial stopper, for instance, is a stopper used to safely and securely close or plug a certain vial. Also, a transparent vial stopper is made from silicone, as silicone is naturally colourless. A transparent vial stopper can be used in various settings, mostly thanks to silicone’s versatility and overall excellent resilience to all kinds of outside factors. However, you will most commonly find these in a chemical facility or a laboratory, where you would have various chemicals stored inside of the vials. Generally speaking, no other stopper is as popular for closing down the vials as a transparent vial stopper is. Silicone is universally considered to be the perfect material for this kind of work, and here’s why.

Silicone is one of the most stable forms of rubber, thanks to its siloxane bonds. Its binding energy is very high, especially compared to some other organic polymers, which means that a silicone product, such as a transparent vial stopper, will have much higher heat resistance, chemical stability and better electrical insulation. As you can imagine, all of these are essential qualities for a vial stopper. For example, a transparent vial stopper can withstand temperatures as high as 270 degrees Celsius, and as low as negative 20 degrees Celsius, which means that vials can be safely stored in a refrigerator or a cooler, but they can also be safely used in a vortex mixer which spins at very high speeds and generates quite a bit of heat.

Our Butyl Stoppers Size Chart

Bottle Stopper Size Catalog

Compare the listed butyl stopper dimensions against the bottle opening and seating arrangement. Confirm the selected profile using the part drawing.

Custom colors are available to your Pantone color code. Include the code in your inquiry.

Butyl Rubber Stopper(Anaerobic bottle stopper)

Compare A, B, C, D and E in mm against the selected stopper drawing. The illustration shows a related profile; confirm the precise underside and fit before specifying the part.

Dimension guide
T-shaped stopper — original A, B, C, D and E dimensions
Related T-shaped stopper profile shown. Confirm dimensions A–E and the exact underside profile for the selected butyl stopper.
Product appearance
Butyl Rubber Stopper(Anaerobic bottle stopper) — product view
Illustrative product appearance. Refer to the selected row and part drawing for dimensions.
PartNo.ABCDE
RSIIR14.5-19.7-1114.519.71130
RSIIR2.5-5.5-5.32.55.55.320
RSIIR3-4.3-4.534.34.50.80
RSIIR3-7-73772.20
RSIIR3.5-6.5-63.56.5620
RSIIR3.8-7-10.53.8710.51.50
RSIIR3.8-7-73.8771.50
RSIIR4-7.5-647.5620
RSIIR4.5-7.5-64.57.5620
RSIIR4.8-6.8-3.64.86.83.60.90
RSIIR5-8-7-25871.52
RSIIR5-8-7-35871.53
RSIIR5-10-851082.80
RSIIR5.7-11.7-125.711.7126.50
RSIIR6-8-56852.20

Need a different size? Share your drawing, mating dimensions and intended use to discuss a suitable part.

Discuss Your Requirements

Product specifications

Product form
Vial or bottle closure matched to its neck finish
Application focus
Vials and laboratory vessels. Size the part against the selected assembly.
Dimensions to confirm
Vial neck bore, sealing flange, plug depth and any crimp-cap interface. Match these to vials and laboratory vessels.
Visibility
Define the required visibility through the finished wall and approve appearance using a sample of the ordered thickness.
Seating check
Check the sealing contact around the opening and the force needed for insertion and removal.
Material
Silicone rubber. Specify compound grade and the required transparency at the actual closure thickness.
Laboratory handling
Define the vial contents, storage conditions and any vortex-mixing cycle; check closure retention on the actual vial.

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