Product Description
laboratory rubber stopper | rubber stopper for test tube | rubber stopper for flask | tapered rubber bung | rubber cork stopper
Rubber Tube Stopper | Rubber Bungs | Red Rubber Tube Supplier & Manufacturer Malaysia
RUBBER-KU RUBBER PRODUCTS is proudly established as the Best Rubber Tube Stopper supplier in Malaysia, delivering engineered sealing solutions for laboratory, chemical, pharmaceutical, and industrial sectors. As the Largest Rubber Tube Stopper Manufacturer Malaysia, we specialize in precision-moulded rubber components that meet demanding performance standards across diverse applications.
Recognized as the Highest Quality Rubber Tube Stopper manufacturer, RUBBER-KU combines advanced rubber compounding, strict QC protocols, and modern production processes to ensure every stopper delivers consistent sealing integrity, durability, and chemical resistance.
With strong nationwide distribution, we are also known as the Market Leader of Rubber Tube Stopper, and continue to be the Biggest Rubber Tube Stopper supplier in Malaysia, supplying bulk quantities with fast lead time and competitive pricing. Our extensive catalogue makes us the Widest Range of Rubber Tube Stopper supplier for laboratories, OEM manufacturers, and industrial users.
Full Size Range – Precision Engineered for Perfect Fit
As the Widest Range of Rubber Tube Stopper supplier, RUBBER-KU offers comprehensive sizing options:
Available Sizes:
T13 | T15 | T17 | T19 | T21 | T23 | T25 | T27 | T29 | T31 | T33 | T35 | T37 | T39 | T51
Dimensional Accuracy:
- Tight tolerance manufacturing for secure sealing
- Standardized taper angle for optimal insertion force
- Consistent top and bottom diameter ratios
- Smooth surface finish for friction-controlled sealing
Each stopper is engineered to provide maximum contact pressure, ensuring leak-proof sealing without damaging glassware or containers.
Product Engineering & Structural Design
RUBBER-KU rubber tube stoppers are developed with application-specific engineering design:
1. Tapered Geometry Design
- Conical profile enables progressive compression
- Ensures tighter seal as insertion depth increases
- Prevents accidental dislodgement under pressure
2. Straight Wall Design (Optional)
- Used in controlled environments requiring uniform sealing
- Suitable for industrial fixtures and mechanical assemblies
3. Solid & Perforated Configurations
- Solid stoppers for complete sealing
- Single-hole / multi-hole bungs for tubing insertion
- Enables integration with gas transfer systems and lab apparatus
4. Surface & Finish Engineering
- Anti-slip surface for easy handling
- Non-stick properties for chemical environments
- Smooth finish reduces contamination risk
Advanced Rubber Material Science
RUBBER-KU utilizes high-performance elastomer technology to manufacture superior rubber stoppers:
Material Options & Properties
Natural Rubber (NR)
- High elasticity and flexibility
- Excellent sealing performance
- Cost-effective for general use
Nitrile Rubber (NBR)
- Superior resistance to oil, grease, and hydrocarbons
- Ideal for petrochemical applications
EPDM Rubber
- Excellent resistance to heat, ozone, and weathering
- Suitable for outdoor and chemical environments
Silicone Rubber
- High temperature resistance (-60°C to +200°C)
- Medical-grade and food-safe options available
- Excellent inertness for sensitive applications
Mechanical & Physical Properties
- Shore A Hardness: Typically 40–70 (customizable)
- Tensile Strength: High resistance to tearing and stress
- Elongation at Break: Excellent flexibility under deformation
- Compression Set Resistance: Maintains shape after prolonged use
- Thermal Stability: Suitable for wide temperature ranges
Chemical Resistance & Compatibility
Our rubber tube stoppers are designed to withstand exposure to:
- Acids (mild to moderate concentrations)
- Alkalis
- Alcohols and solvents (depending on material type)
- Industrial chemicals and reagents
This makes them ideal for laboratory experiments, chemical storage, and industrial processing systems.
Industrial Applications Across Malaysia
RUBBER-KU products are widely used across multiple industries:
🔬 Laboratory & Scientific Industry
- Sealing test tubes, flasks, and beakers
- Chemical experiments and research
- Gas and liquid transfer systems
- Analytical and pharmaceutical labs
🧪 Chemical & Process Industry
- Storage container sealing
- Reactor and vessel closure systems
- Leak prevention in hazardous environments
🏭 Manufacturing & Industrial Use
- Equipment sealing components
- Pipeline and tank closures
- OEM machinery integration
🧴 Pharmaceutical & Medical Sector
- Sample containment
- Sterile environment sealing
- Laboratory-grade applications
Functional Advantages & Performance Benefits
1. Airtight & Leak-Proof Sealing
Elastic compression ensures zero leakage of gases and liquids, even under pressure variations.
2. Contamination Prevention
Acts as a barrier against:
- Dust
- Moisture
- Airborne contaminants
3. Pressure Retention Capability
Maintains internal pressure integrity for chemical reactions and storage.
4. Reusability & Cost Efficiency
- Durable for repeated use
- Resistant to cracking and deformation
- Reduces replacement frequency
5. Easy Handling & Installation
- Flexible insertion and removal
- No tools required
- Safe for glassware applications
About This Item
- Ideal for chemical resistance
- Suitable for laboratory use in combination with flasks
- Designed for both light-duty and heavy industrial applications
- Compatible with tubing systems for advanced setups
Quality Assurance & Manufacturing Standards
RUBBER-KU ensures strict quality control at every stage:
- Raw material inspection
- Precision moulding process
- Dimensional accuracy testing
- Chemical resistance verification
- Batch consistency control
Our manufacturing process ensures uniformity, reliability, and long service life in every product.
Why RUBBER-KU Leads the Malaysia Market
RUBBER-KU RUBBER PRODUCTS continues to dominate the industry by being:
- The Best Rubber Tube Stopper supplier in Malaysia
- The Largest Rubber Tube Stopper Manufacturer Malaysia
- The Highest Quality Rubber Tube Stopper manufacturer
- Market Leader of Rubber Tube Stopper
- The Biggest Rubber Tube Stopper supplier in Malaysia
- The Widest Range of Rubber Tube Stopper supplier
Contact Details
laboratory rubber stopper | rubber stopper for test tube | rubber stopper for flask | tapered rubber bung | rubber cork stopper
| Supplier | : | RUBBER-KU RUBBER PRODUCTS |
| : | rubberku@gmail.com | |
| Phone | : | +603 5191 7961 |
| Fax | : | +603 5191 5961 |
| Location | : | Selangor, Malaysia |
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