rubber stopper /plug has a tapered or other shapes to fit various sized openings and provide a secure, watertight seal. The solid, synthetic rubber construction can be cut to an exact length and is very elastic. Commonly used as a bottle stopper for glass containers, in electrical boxes, and various household or shop applications. The tapered shape allows one size stopper to fit variously sized openings.
NBR, NR, EPDM, FKM, SBR, Silicone, Neoprene or Custom
According to the 2D or 3D technical drawing or samples
designed by 3D high accuracy, small error
We use various kind of polymers like NBR, NR, EPDM, FKM, SBR, Silicone, Neoprene etc. Custom materials available; tell us the application, and we can recommend the appropriate material.
Mechanically protects against the sharp edges of drilled or punched holes for wiring, cable, tubing, piping, hoses, air lines, rope and more. Used in appliances, motors, tools, cars, trucks, trailers, electronic equipment, toys, bikes, RVs, boats, pumps, furniture and more.
high temperature, ozone, oil, Grease resistance Specification A) Standard and Nonstandard B) Different sizes and structure available
Hardness: 30 to 80 Shore A Durometer Colors: Black, Transparent. Custom colors available. Material Temperature Range: -150F to 550F, depending on material. See Material Performance Data for specific information.
What Is a Rubber Stopper?
A rubber stopper is a small, tapered plug used to seal the openings of test tubes, flasks and other laboratory glassware.
Stoppers made of cork are also available for this purpose. However, rubber stoppers are preferable for applications
that require a tighter seal or a greater degree of chemical resistance. Purpose
The primary purpose of a rubber stopper is to prevent a gas or liquid from escaping its container during a
scientific experiment. Rubber stoppers can also prevent the contamination of samples by protecting the
contents of laboratory glassware from air. Last, the use of rubber stoppers allows experimenters to shake
or mix solutions without spilling them.
The standard stopper is cylindrical in shape, with a tapered bottom end. Some rubber stoppers contain one
or two holes to allow the insertion of pipettes, tubing or test equipment (e.g., a thermometer).
Rubber stoppers typically range in diameter from size 000 (0.5 inches) to size 16 (5 inches) at the top.
The tapered bottom end ranges from fivesixteenths to 3.5 inches. Smaller stoppers are appropriate for
test tubes and similar glassware; larger stoppers are appropriate for flasks and beakers.
The main properties that make rubber suitable for use as a laboratory stopper are its elasticity,
chemical resistance and impermeability. Its elasticity allows it to form a tight seal against the inside
of the glassware. Its chemical resistance makes it safe for use with many corrosive and otherwise
reactive compounds. Its impermeability helps to prevent the escape of liquids and gases from the container.
8~10mm silicone stopper for lyophilization
excellent self-sealing property
heat, ancid and alkali resistant
compatible with medicine
high purity and quality
less fragment when puncturing
low puncture force
best stability during freeze-drying
application area: lyophilized formulation in pharmaceutical packaging, used with flip cap and seal
certificates: FDA, ROHS, MSDS, REACH.
manufactured in a clean room
inspection: perfect inspection in every process by professional persons and instruments
sterilized at 121 degree C
packed by opp and carton in a clean room
As per GMP and ISO specificaton
advanced production and inspection equipment and professional engineers
4. application area: lyophilized formulation in pharmaceutical packaging, used with flip off cap and seal
5. certificates: FDA, ROHS, MSDS, REACH.
6. manufactured in a clean room(purifying grade is 300,000)
7. inspection: perfect inspection in every process by professional persons and instruments
8. sterilized at 121 degree C
9. packed in a clean room, first by double PE bags then cartons
10. as per GMP and ISO specification
11. advanced production and inspection equipment and professional engineers
we can design and manufacture butyl rubber stoppers for pharmaceutical packaging according to your detailed requirements, with guaranteed quality,delivery time and best service.
Our company had been founded in 2004,which is located in shenzhen city of China with the advantages of elegant environment and convenient transportation. ,with the area about 1000 square meters, the staff about 100 people, and one member of the shenzhen city rubber profession association member unit. Our company is domestic specialized engaged in each kind of rubber and silicone
product manufacture the high tech enterprise. Since had been established,The company has a set from the product ... View detail