Custom Rubber Stopper
Custom Molded Rubber Stopper
Flexiparts makes custom rubber stoppers according to your drawings. Using our in-house molding and production capabilities, we produce stoppers that resist chemicals, high pressure, and extreme temperatures. Your stoppers can be any size, shape, material, hardness, or surface finish—built to meet your exact requirements and solve sealing problems standard stoppers can’t.
Getting a custom rubber stopper solution is simple — send us your drawing or sample, and we’ll handle mold design, quoting, and production. Contact us anytime via our website, email, or phone to start your project.
Rubber Stopper Solutions Built to Your Needs
*Please note: The molded rubber parts shown below are not in stock — these parts were Flexiparts Plastics customized for other customers.
LET’S START A NEW CUSTOM RUBBER PARTS
Custom Rubber Stopper Capabilities
Flexiparts produces custom rubber stoppers based on your drawings, samples, or application requirements. We support different designs, dimensions, materials, and performance requirements for laboratory, medical, and industrial sealing applications.
| Capability | Options |
|---|---|
| Size & Shape | Custom diameters, lengths, tapered, stepped, or special profiles |
| Rubber Materials | Silicone, EPDM, Butyl, NBR, FKM |
| Hardness | Custom Shore A hardness based on sealing requirements |
| Surface Finish | Smooth, textured, or customized surface treatment |
| Special Features | Pre-drilled holes, slots, metal inserts, threaded designs |
| Production Volume | Prototype runs to mass production |
Rubber Stopper Manufacturing Methods
- Compression Molding
- Injection Molding
- Overmolding
These processes are suitable for producing highly precise, tapered rubber stoppers, laboratory plugs, septa stoppers, and custom rubber end stoppers with consistent dimensional accuracy and high-quality finishes.
Material
- Silicone (MVQ)
- Butyl Rubber (IIR)
- Ethylene Propylene Diene Monomer (EPDM)
- Nitrile (NBR)
- Fluoroelastomer (FKM)
Benefit
- Create reliable, leak-proof seals in bottles, vials, and industrial ports.
- Available in tapered or stepped designs for optimum sealing retention.
- Resistant to chemicals, solvents, and temperature extremes.
- Materials available for high-purity (e.g., medical/food grade) applications.
- Can be supplied solid or pre-drilled for tubes, wires, or venting.
- Durable and suitable for use under vacuum or light pressure.
Application
- Laboratories and Research: Sealing flasks, test tubes, and glassware.
- Pharmaceutical and Medical: Sealing vials and fluid containers (septum stoppers).
- Chemical Industry: Protecting ports and containers from contamination.
- Industrial Manufacturing: Temporary or permanent sealing of hydraulic or pneumatic lines.
- Food and Beverage: Sealing specialized tanks or equipment.
Related FAQs of Rubber Stoppers
Silicone (MVQ) and FKM resist high temperatures and maintain flexibility. We can supply washers in these materials.
What Our Customers Say
