Rubber Stopper Rubber Plug

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Rubber Stoppers

Sanda Rubber Stoppers in durable Silicone, EPDM, Neoprene and natural Pure Gum rubber butyl rubber. Types include Micro, Solid, rubber stoppers with one hole and two hole varieties. Silicone stoppers, Neoprene and Pure Gum available in solid plugs only. EPDM Rubber Stoppers available in solid, 1-hole and 2-hole varieties.

If you’re looking for a reliable, durable seal for a test tube, bottle or pipe look no further than Sanda’s wide selection of rubber corks and stoppers. Sanda offers rubber stoppers in a variety of styles and materials including solid black EPDM rubber, silicone, neoprene and pure gum. We also offer rubber stoppers with holes with the option of 1-hole and 2-hole varieties. Rubber stoppers with holes may be required if the product you are sealing requires air circulation.

The key to choosing rubber stoppers is to pick a rubber stopper with the biggest bottom diameter smaller than the diameter of your hole. With about 15 different sizes to choose from, chances are  Sanda will have a rubber stopper that will fit your container perfectly.

Rubber Stopper Rubber Plug (7)

What are rubber stoppers?

Rubber stoppers are ideal for plugging joints or holes in laboratory glassware and creating a liquid-tight seal.

Rubber bungs are often used with glass containers such as test tubes, flasks, jugs, and many other pieces of standard lab equipment.

Available with and without holes

There are many situations in which having pre-drilled holes can be useful.

We provide standard sizes and Custom-molded for various dimensions

Any color: black, white, blue, green, red, yellow, orange, purple, brown, and else

Customized packing is accepted

We produce parts according to your needs

Rubber Stopper Rubber Plug (8)



according to the customers' requirements

DimensionStandard sizes, also can be customized
Hardness20-90±5 Shore A
ToleranceAccording to ISO 3302:2014 (E)
Rapid Development


A. From drawing, new tool design to mold support and samples.

B. Prototype mold, usually in 7 days;

C. Mass production mold, usually in 1~2 weeks.

RoHs & REACHRoHs & REACH directive compliant green products
AdvantagesProfessional sales-team and technology-team, molding center, high-tech testing machine and so on

Customized Products


1. It is better to send us your drawing first, as most of our products are customized

2. Please inform the work environment and your other requirements( e.g. size, material, hardness, color, tolerance, etc)for quoting a right price. 

3. A good price will be quoted after the confirmation of the details.

4. Before mass production, a sample checking is a must to ensure everything is going right as your standard.

Our Items Profile

Rubber Molded Parts/ Rubber Extruded Parts/Rubber cord/ Silicone seal stirps/ Foam Rubber Parts/ Rubber Bellow/ Rubber Grommet/ Rubber Gasket/ O-ring & Seals / Rubber Car Jack Pad/ Rubber Bearing & Bushing/ Mounting/ Rubber Parts with Adhesive / Rubber Bonded to Metal Parts / Silicone Products / Silicone Daily Supplies/ Baby Items / Keypad / Suction Cup/ Plastic Parts/ , etc..

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