Product Overview
Reliable custom rubber parts for industrial applications
Quick Answer
Medical-grade silicone pull tab with ribbed stem is a blue molded silicone rubber component sized Ø7.75 × 39 mm. It is used for medical device assembly, protective plugging, positioning, handling and controlled removal. Diameter, length, rib geometry, hardness, color, tolerance, packaging and documentation options can be customized according to drawings or samples.
Medical Silicone Pull Plug — Ribbed Stem Pull Tab for Medical Device Sealing
The Medical Silicone Pull Plug is a precision-molded silicone rubber plug featuring a ribbed stem design, engineered to seal small ports or openings on medical devices while providing an easy-grip tab for controlled removal. Manufactured in a compact Ø7.75 x 39mm blue configuration, this component is designed for applications where a temporary, easily removable seal is required on sensitive medical or diagnostic equipment.
Key Specifications
| Parameter | Specification |
|---|---|
| Product Name | Medical Silicone Pull Plug with Ribbed Stem |
| Material | Medical-grade silicone rubber |
| Diameter | Ø7.75 mm |
| Overall Length | 39 mm |
| Color | Blue |
| Stem Design | Ribbed stem for secure plug retention and grip |
| Category | Medical device sealing plug / pull tab |
What Is a Medical Silicone Pull Plug?
A medical silicone pull plug is a small plug-and-tab component molded from biocompatible silicone rubber, designed to seal a port, lumen, or small opening on a medical device or component during storage, sterilization, packaging, or transport. The ribbed stem portion inserts into the target opening and uses its raised rib profile to create a secure friction-fit seal, while the tab end provides an easy-to-grasp handle for quick, controlled removal by the end user or clinician when the seal needs to be broken. This dual-function design, a sealing stem paired with a pull tab, is common in single-use and reusable medical device components where a temporary, tamper-resistant, and easily removable closure is needed.
Core Design Features
Ribbed Stem for Secure Sealing
The stem section of the plug incorporates a ribbed profile rather than a smooth cylindrical surface, allowing it to create multiple points of interference contact when inserted into a mating port or bore. This ribbed design improves sealing reliability compared to a smooth plug, since each rib acts as an independent sealing point, helping maintain a tight closure even if there is minor dimensional variation in the mating opening.
Pull Tab for Controlled Removal
The opposite end of the component is shaped as a flat or rounded tab, sized for easy finger grip. This allows the plug to be removed cleanly and quickly without needing tools, which is particularly important in clinical or point-of-care settings where speed and simplicity of use are priorities.
Compact Dimensional Profile
At Ø7.75mm diameter and 39mm overall length, this pull plug is sized for small-bore medical device ports, connector openings, or lumen seals where a compact, low-profile sealing component is required.
Material Properties: Medical-Grade Silicone Rubber
Medical-grade silicone rubber is selected for this application due to its combination of biocompatibility, chemical inertness, and long-term stability under sterilization and storage conditions.
- Biocompatibility: Formulated to be non-toxic and non-irritating for applications involving direct or indirect patient contact.
- Sterilization Compatibility: Silicone rubber generally withstands common medical sterilization methods such as autoclaving, ethylene oxide (EtO), and gamma irradiation without significant degradation.
- Chemical Resistance: Resists a wide range of cleaning agents, disinfectants, and bodily fluids without swelling, cracking, or degrading.
- Temperature Stability: Maintains flexibility and sealing performance across a wide temperature range, supporting both cold storage and heat-based sterilization cycles.
- Color Consistency: The blue coloring is achieved using medical-grade colorants, supporting visual identification within multi-component assemblies or kits.
Common Applications
- Sealing plug for catheter ports, connector openings, or small lumens.
- Temporary closure for diagnostic device sampling ports.
- Sterile packaging seal for single-use medical device components.
- Tamper-evident or tamper-resistant closure for medical kits and assemblies.
- General small-bore sealing applications in medical device manufacturing.
Why Choose a Ribbed-Stem Pull Plug Design
Compared to a plain plug, the ribbed stem design offers a more reliable seal across a small range of bore tolerances, since each rib independently compresses against the mating surface. The integrated pull tab also improves usability at the point of care, reducing the risk of a clinician or technician struggling to remove a flush-fitting plug, which could otherwise require tools or excessive force that risks damaging the surrounding device housing.
Custom Manufacturing Options
- Custom diameter and overall length beyond the standard Ø7.75 x 39mm reference.
- Custom color for visual coding across different port sizes or device lines.
- Custom Shore hardness to adjust insertion force and sealing tightness.
- Custom stem rib count and profile geometry.
- Custom tab shape (rounded, flat, or textured) for improved grip.
FAQ
What is a medical-grade silicone pull tab used for?
A medical-grade silicone pull tab is used for protective plugging, device assembly, positioning, handling and controlled removal in compatible medical or healthcare-related equipment. The ribbed stem can support retention and grip inside a matching hole, port or housing interface.
What are the confirmed dimensions of this silicone pull tab?
The confirmed size is Ø7.75 × 39 mm. This means the overall diameter is Ø7.75 mm and the overall length is 39 mm. Dimensional tolerance, rib geometry and fit details should be confirmed by drawing or sample before production.
Can the material and hardness be customized?
The product is made from medical-grade silicone rubber. Shore A hardness can be reviewed according to insertion force, removal force, flexibility, compression and assembly requirements. Buyers should provide the required hardness or a physical sample for reference.
Can the ribbed stem design be modified?
Yes. Rib spacing, rib height, stem diameter, pull tab shape and overall geometry can be customized according to the device interface and functional requirements. Tooling cost depends on the drawing and product structure.
Are compliance documents available?
Medical material documentation, RoHS, REACH and other compliance options are available upon request for applicable silicone compounds. Buyers should specify the required standards, market, contact conditions and documentation format before quotation, sampling or batch production.
Are samples available before bulk production?
Samples are available upon request. Sample preparation depends on confirmed dimensions, silicone compound, Shore A hardness, color, tooling status, packaging method and inspection requirements. A drawing, 3D model or physical sample helps confirm fit and handling performance before mass production.
Request a Custom Quote
Send your medical-grade silicone pull tab drawing, 3D model, device interface drawing or physical sample for review. Please include diameter, length, rib design, material, hardness, color, tolerance, contact condition, sterilization requirement, quantity, annual demand, documentation needs and packaging method.
