Silicone rubber stopper

Silicone rubber stopper

The silicone rubber stopper is a unit that finds its use in many different industries, and the reason why this type of plug is so sought-after is because of its durability and reliability. When you choose the correct size of the unit, and when you properly install it, you won’t have to worry about any contamination or leaking no matter where the unit is placed and how it’s kept. Even when the silicone rubber stopper is exposed to extreme conditions including harsh weather, light, heat, and chemicals, it will not get damaged or lose its shape. The latter part is extremely important since we want to be able to fully rely on the stopper and know that no matter what happens, the seal will not be broken. In our store, you can find a lot of different types of the silicone rubber stopper, and we can aid you in choosing the right dimensions, type, and color of the unit, and we can also help in manufacturing custom models. 

These units are extremely durable, and you can use and reuse them for years without them getting damaged or broken. When choosing the best type for your needs, know that the dimensions of the opening will make the biggest difference, and if you don’t properly install them, the seal may break with usage. They are used to protect the opening and to prevent any spilling or contamination. They are the best option when it comes to containers with sharp edges, and at the same time, they are soft and bendable enough so that they don’t damage the hole they are protecting. The silicone rubber stopper comes in a variety of colors, and even though white or transparent are the most common choices, you can still opt for another hue to please the aesthetics of your project. 

Stopper & Plug Size Catalog

Compare four stopper profiles and check the selected part dimensions against your opening and available depth. Each profile has its own drawing and dimension meanings.

Blind-Hole · RSTTapered · RSAUndercut · RSBT-Shaped · RSD

RST T-Shaped Plugs

Match stem diameter A, flange diameter B, stem length C and flange thickness D. E refers to the underside recess; use the selected row and approved drawing to confirm the actual profile.

Dimension guide

Product appearance

PartNo.	A（mm）	B（mm）	C（mm）	D（mm）	E（mm）
RST2.5-5.5-5.3	2.5	5.5	5.3	2	0
RST2.7-5.5-5	2.7	5.5	5	2	0
RST3-4.3-4.5	3	4.3	4.5	0.8	0
RST3-7-7	3	7	7	2.2	0
RST3.3-6.5-6	3.3	6.5	6	1.5	0
RST3.5-6.5-6	3.5	6.5	6	2	0
RST3.8-7-10.5	3.8	7	10.5	1.5	0
RST3.8-7-7	3.8	7	7	1.5	0
RST3.8-7-6	3.8	7	6	1.5	0
RST4-7.5-6	4	7.5	6	2	0
RST4-9.5-7	4	9.5	7	2.5	0
RST4.3-8-6	4.3	8	6	1.5	0
RST4.5-7.5-6	4.5	7.5	6	2	0
RST4.8-6.8-3.6	4.8	6.8	3.6	0.9	0
RST4.8-9-7	4.8	9	7	1.5	0

Need a different fit? Share the opening dimensions, mating profile and intended use for a custom size.

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