Skip to content
RUBBER & SILICONEStandard parts. Custom solutions.

1/4 Inch Rubber Plugs

1/4 Inch Rubber Plugs

All dimensions are in mm​

Need a quote or a custom part?

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

Contact Us Now!

Email us[email protected]

Most of us use the 1/4 inch rubber plugs for sealing containers such as bottles or tubes. The natural rubber stoppers guarantee optimal sealing of flasks and other laboratory containers, perfect sealing, and good adhesion. The 1/4 inch rubber plugs are suitable for the 1/4inch hole diameters and can vary in hardness and color. They are generally reusable and manufactured by compression molding or transfer molding rubber stoppers. The rubber plug can adapt to the size of the hole closing hermetically. They can withstand high temperatures are also resistant to humidity. Rubber plugs are also known as rubber stoppers, caps, rubber hood, rubber seal, and rubber cap.
It is a mix of natural rubber with elastic rubber; the 1/4 inch rubber plugs guarantee a good fit. It primarily operates within the temperature range -25℃ and + 70℃ (+ 120℃ in humid conditions). Most 1/4 inch rubber plugs are hardened with a sturdy design to deal with harsh conditions, including high temperature, chemical substances, and reactions. In custom designs, you can use them to fit specific locations.
Types of 1/4 inch Rubber Plugs
* Flat rubber plug
* Conical rubber plug
* Rubber cap type
* Automotive rubber plugs
* Male rubber plug
* Rubber plug with one hole
* Rubber plug with two holes
* Square plugs
Uses of 1/4 Inch Rubber Plugs
The 1/4 inch rubber plugs are usable in the chemical, pharmaceutical, power industries, manufacturing, and maintenance,
mainly for the following:
* They protect against humidity and contamination.
* They seal pipes.
* They protect paint lines.
* They encapsulate gases, liquids, and oils.
* We can also use it in electrical installations.

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.

Custom colors are available to your Pantone color code. Include the code in your inquiry.

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
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.
Product appearance
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)E(mm)
RST2.5-5.5-5.32.55.55.320
RST2.7-5.5-52.75.5520
RST3-4.3-4.534.34.50.80
RST3-7-73772.20
RST3.3-6.5-63.36.561.50
RST3.5-6.5-63.56.5620
RST3.8-7-10.53.8710.51.50
RST3.8-7-73.8771.50
RST3.8-7-63.8761.50
RST4-7.5-647.5620
RST4-9.5-749.572.50
RST4.3-8-64.3861.50
RST4.5-7.5-64.57.5620
RST4.8-6.8-3.64.86.83.60.90
RST4.8-9-74.8971.50

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

Discuss Your Requirements

Ready to Find Your Rubber Part?

Send your requirements or drawing to discuss materials, dimensions and custom parts.

Request a Quote

Request a Quote

Tell us about your part, including dimensions, material, quantity, application and any special requirements. Attach a drawing if available to help us prepare your quote.

Contact Our Team

Prefer email? Contact us at [email protected]

Attach a drawing (optional)