tapered rubber plug

2022-01-05 · Stoppers & Plugs

tapered rubber plug

A tapered rubber plug closes an opening by seating along its sloping outer surface. Compare the small-end diameter, large-end diameter and height with the opening and desired insertion depth. The taper accommodates a defined range of fit, not every bottle neck or thread profile.

Choose a solid plug for a closed body or a bored plug where a tube or fitting must pass through. An open bore remains a passage unless the fitted component completes the closure. Specify the bore size and position, and check the assembled contact at both the vessel neck and the inserted component.

Select the rubber compound for the contents, temperature and cleaning conditions. Check retention where pressure differences or repeated handling could move the plug. Inspect for wear, cracking, swelling or permanent deformation; a flexible closure should not be described as impossible to damage or unchanged after years of use.

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: Tapered plug with a defined range of opening fit.
Taper dimensions: Small-end diameter, large-end diameter, height and insertion depth.
Passage options: Solid body or a specified bore completed by a matching tube or fitting.
Retention duty: Consider pressure differences and repeated handling.
Inspection: Check wear, cracks, swelling and permanent deformation in the selected service.

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tapered rubber plug

tapered rubber plug

Stopper & Plug Size Catalog

RST T-Shaped Plugs

RSA Tapered Corks

RSB Undercut Plugs

RSD T-Shaped Stoppers

Product specifications

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