silicone line stopper

2022-01-05 · Stoppers & Plugs

silicone line stopper

No matter what our customers have to seal, including different vials, tubes, bottles, or containers, our silicone line stopper can help them create an air-tight seal. This means that no air and contaminants will enter the container, hence, the substances inside will not change their taste, color, or smell. Since it is manufactured from durable and strong silicone, it has a chemically neutral construction, which means that it can even function if placed on tubes containing different solvents. Thus, our silicone line stopper can be utilized across various industries, including the automotive, marine, as well as food & beverage industries.

As we mentioned the stopper is manufactured from high-quality materials, thus, it can withstand a wide range of external factors. For starters, the stopper will resist cracking and breaking due to various heating procedures, however, it can also resist extremely low-temperature changes, which means that it can be placed in freezers or refrigerators. Also, it can protect the substance in the tube, vial, or container from contaminants, including dust, grime, humidity, oils, chemicals, some acids, as well as sunlight, UV rays, weather, and the ozone, which basically means that you can use our silicone line stopper in environments that experience constant changes.

If you look at some categories in our online store, you will see that we offer a wide range of silicone line stoppers, thus, you will be capable of choosing the size, design, color, and type you require for the bottles, vials, tubes, and containers you are planning on sealing. They all feature a tapered bottom, which is exactly what will allow you to fit a silicone line stopper into the vial easily and quickly. We do offer customization services, hence, if you cannot find the silicone line stopper you are looking for, we might be capable of designing and producing it for you.

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.

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.

T-shaped stopper — original A, B, C, D and E dimensions — A recessed RST variant is illustrated. The head remains closed. Check E and the approved section for the selected part.

Rubber Silicone Plugs(T-shaped-RST) — product view — Illustrative product rendering. Refer to the selected part drawing and table for dimensions.

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

RSA Tapered Corks

Compare large-end diameter A, small-end diameter B and Height, in mm. The mating bore and required seating depth determine where the taper contacts the opening.

Tapered cork — Diameter A, Diameter B and Height — Tapered profile reference. Use Diameter A, Diameter B and Height from the selected row.

Rubber Corks(Tapered-RSA) — product view — Illustrative product rendering. Refer to the selected part drawing and table for dimensions.

Part No.	Diameter A	Diameter B	Height	Colour	Materials
RSA1.6-0.4-15.9	1.6	0.4	15.9	Transparent	Silicone
RSA2-0.5-19.1	2	0.5	19.1	Transparent	Silicone
RSA3.2-0.8-15.9	3.2	0.8	15.9	Transparent	Silicone
RSA3.2-1.6-15.9	3.2	1.6	15.9	Transparent	Silicone
RSA4.8-1.6-15.9	4.8	1.6	15.9	Transparent	Silicone
RSA4.8-1.6-19.1	4.8	1.6	19.1	Transparent	Silicone
RSA5.5-1.2-38.1	5.5	1.2	38.1	Transparent	Silicone
RSA6.4-3.2-19.1	6.4	3.2	19.1	Transparent	Silicone
RSA6.4-3.2-25.4	6.4	3.2	25.4	Transparent	Silicone
RSA8.7-4.8-15.9	8.7	4.8	15.9	Transparent	Silicone
RSA8.7-4.8-25.4	8.7	4.8	25.4	Transparent	Silicone
RSA9.2-6.2-12.8	9.2	6.2	12.8	Transparent	Silicone
RSA9.5-6.5-18.5	9.5	6.5	18.5	Transparent	Silicone
RSA11-8.5-17.5	11	8.5	17.5	Transparent	Silicone
RSA11.5-6.5-25	11.5	6.5	25	Transparent	Silicone

RSB Undercut Plugs

Compare neck diameter A, flange diameter B, flange-to-lip distance C and flange thickness D. Check panel thickness and rear clearance. E refers to the underside recess.

Silicone Plugs(Undercut-RSB) — product view — Illustrative product rendering. Refer to the selected part drawing and table for dimensions.

Part No.	A (mm)	B (mm)	C (mm)	D (mm)	E (mm)
RSB2.5-6-3	2.5	6	3	1.5	0
RSB3-7-3	3	7	3	2	0
RSB3.5-7.5-3	3.5	7.5	3	2	0
RSB3.6-7.5-6	3.6	7.5	6	2	0
RSB4-8-3	4	8	3	2	0
RSB4.5-8.5-3	4.5	8.5	3	2	2
RSB5-9-3	5	9	3	2	2.5
RSB5.5-9.5-3	5.5	9.5	3	2	3
RSB6-10-4	6	10	4	2	3.5
RSB6.5-10.5-4	6.5	10.5	4	2	4
RSB6.5-12-8	6.5	12	8	2	0
RSB6.7-8.7-5.3	6.7	8.7	5.3	1.3	4.1
RSB7-11-4	7	11	4	2	4.5
RSB7.5-11.5-4	7.5	11.5	4	2	5
RSB8-12-4	8	12	4	2	5.5

RSD T-Shaped Stoppers

Compare stem diameter A, flange diameter B, stem length C and head thickness D, in mm. Check the seating surface and available depth as well as the hole diameter.

T-shaped stopper — original A, B, C and D dimensions — Solid T-shaped profile reference. Dimensions A–D follow the selected part drawing.

Silicone Stoppers(T shape) — product view — Illustrative product rendering. Refer to the selected part drawing and table for dimensions.

Part No.	A (mm)	B (mm)	C (mm)	D (mm)	Colour	Materials
RSD2.7-5.5-5	2.7	5.5	5	2	Black, White	Silicone
RSD3-7-7	3	7	7	2.2	Black, White	Silicone
RSD3.3-6.5-6	3.3	6.5	6	1.5	Black, White	Silicone
RSD3.5-6.5-6	3.5	6.5	6	2	Black, White	Silicone
RSD3.8-7-6	3.8	7	6	1.5	Black, White	Silicone
RSD4-9.5-7	4	9.5	7	2.5	Black, White	Silicone
RSD4.3-8-6	4.3	8	6	1.5	Black, White	Silicone
RSD4.5-7.5-6	4.5	7.5	6	2	Black, White	Silicone
RSD4.8-9-7	4.8	9	7	1.5	Black, White	Silicone
RSD5-12-8	5	12	8	2.8	Black, White	Silicone
RSD5.3-9.5-7	5.3	9.5	7	1.5	Black, White	Silicone
RSD5.5-8.5-7	5.5	8.5	7	2	Black, White	Silicone
RSD5.8-10-8	5.8	10	8	2	Black, White	Silicone
RSD6-13-8	6	13	8	3.5	Black, White	Silicone
RSD6.3-10.5-8	6.3	10.5	8	2	Black, White	Silicone

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

Discuss Your Requirements

Product specifications

Product form: Removable closure fitted inside an opening
Material: Silicone. Specify the compound grade for the selected service.
Application focus: Vials and bottle necks. Size the part against the selected assembly.
Dimensions to confirm: Opening diameter, closure profile, insertion depth and exposed grip. Match these to vials and bottle necks.
Profiles discussed: Tapered sections. Select the profile that matches the mating part and dimension that section explicitly.
Contact conditions: Air, solvents, food ingredients, lubricating oil and acids: define concentration, temperature and contact time, then check compatibility with the chosen compound.
Exposure to evaluate: Heat and cold cycling, sunlight or UV, ozone, outdoor weather and moisture. Validate the selected material under the combined conditions.
Seating check: Check the sealing contact around the opening and the force needed for insertion and removal.

Need a quote or a custom part?

Send your requirements, drawings or samples to discuss standard and custom silicone rubber parts.

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silicone line stopper

silicone line stopper

Stopper & Plug Size Catalog

RST T-Shaped Plugs

RSA Tapered Corks

RSB Undercut Plugs

RSD T-Shaped Stoppers

Product specifications

Need a quote or a custom part?

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