Rubber Gasket Syringe – High-Precision Plunger Gaskets for Medical Injection Systems
Product Overview
Rubber Gaskets for Syringes are precision-engineered sealing components installed on syringe plungers to create a stable, leak-free seal between the plunger rod and the syringe barrel. Compared with standard O-rings, syringe rubber gaskets feature optimized sealing profiles (flat, cup-type, or multi-lip designs) that provide larger contact area, controlled friction, and consistent glide force throughout the entire injection process.
Manufactured from pharmaceutical-grade elastomers in ISO Class 7 cleanroom facilities, our syringe rubber gaskets ensure drug compatibility, long-term sealing stability, and smooth plunger movement for disposable, prefilled, and reusable syringe systems.
Core Product Advantages✯ Optimized sealing profiles for syringe barrels ✯ Stable and repeatable glide force ✯ Low particle generation & low extractables ✯ Tight dimensional control (±0.02 mm) ✯ Suitable for high-speed automated assembly |
Key Performance Benefits✯ Zero leakage during aspiration & injection ✯ Reduced stick-slip effect ✯ Excellent drug and solvent compatibility ✯ Long shelf life stability ✯ Consistent dose accuracy |
Product Specifications
Standard Syringe Compatibility
| Syringe Volume | Typical Gasket OD | Profile Design | Typical Applications |
|---|---|---|---|
| 1 ml | Custom-fit | Flat / Cup-type | Insulin, tuberculin syringes |
| 3 ml | Custom-fit | Double-lip gasket | General medical syringes |
| 5 ml | Custom-fit | Profiled sealing gasket | Standard injection use |
| 10 ml | Custom-fit | Multi-lip gasket | Large-volume injections |
| 20–60 ml | Custom-fit | Reinforced gasket | Veterinary & industrial syringes |
| Custom | Designed according to syringe barrel ID and plunger geometry | ||
📐 Custom Engineering Support: Gasket geometry, lip angle, thickness, and hardness can be customized to achieve target glide force and sealing performance based on your syringe design.
Technical Parameters
| Material Options | Butyl Rubber (IIR), Medical Silicone (VMQ), EPDM, NBR, Fluoroelastomer (FKM) |
| Hardness Range | Shore A 40 – 80 (customizable) |
| Operating Temperature | -40°C to +200°C (material dependent) |
| Dimensional Tolerance | OD / Thickness: ±0.02 mm |
| Surface Finish | Ra ≤ 0.4 μm, particle-controlled |
| Compression Set | ≤ 25% (70 h @ 150°C for silicone) |
| Extractables Level | Low extractables / low leachables grades available |
| Certifications | ISO 9001, RoHS, REACH, FDA CFR 177.2600 | ISO 10993 & USP Class VI available |
Material Selection Guide
🟢 Butyl Rubber (IIR)
Best For: Prefilled & oxygen-sensitive drugs
- Excellent gas & moisture barrier
- Very low extractables
- Ideal for vaccines & biologics
- Long-term drug storage stability
🔵 Medical Silicone (VMQ)
Best For: Smooth glide & patient comfort
- Low friction characteristics
- Wide temperature range
- Excellent biocompatibility
- Consistent injection force
🟠 EPDM
Best For: Steam sterilization
- Excellent autoclave resistance
- Good chemical compatibility
- Cost-effective for high volumes
🟣 FKM
Best For: Aggressive drug formulations
- Outstanding chemical resistance
- High-temperature stability
- Excellent aging performance
Applications & Industries
Rubber Gasket for Syringes – Engineered for Stable Sealing & Smooth Injection
Disposable medical syringes (1–60 ml)
Prefilled syringe systems
Auto-injectors & pen injectors
Veterinary injection devices
Laboratory & diagnostic syringes
Quality Assurance
- 100% dimensional & visual inspection
- Cleanroom manufacturing (ISO Class 7)
- Batch traceability & CoA provided
- Leakage & glide force performance testing
- Sterilization compatibility: Gamma / EtO / Autoclave
Packaging & Shipping
📦 Packaging Options：
Standard Packaging:
- Sealed PE bags
- Inner cartons with protective layers
- Pallet packing for bulk shipment
Custom Packaging (Available on request):
- Small pouch / small bag packing
- Individual heat-sealed plastic bag with cardboard backing
- Individual bubble-wrap protection
- Light-proof black packaging
- Customized labeling or barcodes
🚚 Shipping Methods
- DHL / FedEx / UPS express
- Air freight for urgent orders
- Sea freight for bulk orders
- FOB / CIF / DDP trade terms available
Frequently Asked Questions
A: Syringe rubber gaskets are designed with flat or profiled sealing faces to provide larger contact area and controlled glide force, while O-rings are primarily circular cross-section seals.
Q: Which material is best for prefilled syringes?
A: Butyl rubber is commonly recommended due to its excellent gas barrier properties and low extractables.
Q: Can you customize gasket geometry?
A: Yes. We customize diameter, lip design, thickness, and hardness based on syringe barrel dimensions and target injection force.
Q: Do you support biocompatibility testing?
A: ISO 10993 and USP Class VI testing are available upon request through accredited laboratories.
Q: What is your quality guarantee?
A: Each batch undergoes 100% inspection. Defect rate is controlled below 0.1%. Full replacement or refund is provided for verified manufacturing defects.
Contact Us
Xiamen Best Seal Imp. & Exp. Co., Ltd.
Email: yunying2@bestsealhk.com
Tel: +86-592-5782315 | WhatsApp: +86 189 5015 9396
Professional Syringe Rubber Gasket Manufacturer | Medical Sealing Solutions
Why choose us?
- Our experienced team is dedicated to providing top-quality Solid Rubber Gaskets.
- We adapt to local conditions and timely adjustments in the training process, and conduct training in a targeted manner to maximize the training effect.
- We strive to exceed our customers’ expectations when it comes to Solid Rubber Gaskets and service.
- We continue to strengthen the construction of the technological innovation system to ensure the quality and credibility of our Rubber Gasket Syringe, always taking the requirements of customers at heart to provide them with reliable, high-quality and inexpensive products and services.
- Our Solid Rubber Gaskets are made from the finest materials available.
- We have a large and efficient sales network and constantly provide integrated, efficient and convenient services to our global customers.
- We take pride in our ability to produce high-quality Solid Rubber Gaskets at a reasonable price.
- In the course of the future, we will open up the space for career development with our unique talent strategy.
- Our Solid Rubber Gaskets are made with the utmost care and attention to detail.
- Our Rubber Gasket Syringe enjoy a good reputation among the society and consumers with high quality, stable quality and continuous innovation.
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