Product Overview
Rubber Syringe Gasket is a precision-molded elastomer component mounted on syringe plungers to form a secure seal between the plunger and barrel. It plays a critical role in ensuring leakage prevention, smooth plunger movement, and accurate dose delivery.
Unlike standard O-rings, syringe gaskets are engineered with flat, cup-type, or multi-lip sealing profiles to achieve controlled friction and stable glide force throughout aspiration and injection.
All products are manufactured in ISO Class 7 cleanroom environments using pharmaceutical-grade materials suitable for disposable, prefilled, and reusable syringe systems.
Product Advantages
- Optimized sealing geometry for syringe barrels
- Stable and repeatable glide force across full stroke
- Excellent sealing performance under negative and positive pressure
- Low extractables and low particle generation
- Reduced stick-slip effect for smooth injection
- High dimensional consistency (±0.02 mm)
- Compatible with high-speed automated assembly lines
- Supports precise and consistent dose delivery
Specifications & Compatibility
| Syringe Volume | Gasket Design | Typical Applications |
|---|---|---|
| 1 ml | Flat / Cup-type gasket | Insulin & tuberculin syringes |
| 3 ml | Double-lip gasket | General medical injections |
| 5–10 ml | Profiled sealing gasket | Standard clinical syringes |
| 20–60 ml | Multi-lip reinforced gasket | Veterinary & laboratory syringes |
| Custom | Designed according to barrel ID and plunger structure | |
Material Options
- Butyl Rubber (IIR): Excellent gas barrier, low extractables, ideal for prefilled syringes
- Medical Silicone (VMQ): Smooth glide, wide temperature range, high biocompatibility
- EPDM: Good chemical resistance, suitable for steam sterilization
- NBR: Cost-effective option for non-critical drug contact
- FKM: Superior resistance to aggressive drug formulations
Applications & Industries
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
What is the difference between a rubber syringe gasket and an O-ring?
Rubber syringe gaskets are designed with flat or profiled sealing faces to provide larger contact area and controlled glide force. O-rings have a round cross-section and are not optimized for smooth syringe injection performance.
Which material is recommended for prefilled syringes?
Butyl rubber (IIR) is commonly used for prefilled syringes due to its excellent gas barrier properties and very low extractables, making it suitable for long-term drug storage.
Can you customize gasket size and sealing geometry?
Yes. Outer diameter, thickness, lip design, hardness, and sealing profile can be customized according to syringe barrel dimensions and target glide force.
Are your rubber syringe gaskets biocompatible?
Medical-grade materials compliant with FDA, ISO 10993 and USP Class VI standards are available. Test reports can be provided upon request.
How do you ensure product quality and consistency?
All products are manufactured in ISO Class 7 cleanrooms, with 100% dimensional and visual inspection, batch traceability, and glide force performance testing.
Why choose us?
- We offer flexible and customizable packaging options for our Rubber Gaskets to meet the needs of our customers.
- We always adhere to the principle of quality first and customer first, moving towards the development direction of 'specialization, scale and internationalization', and have gradually become one of the professional companies with reputation at home and abroad.
- We have a strict quality control process in place to ensure our Rubber Gaskets meet the highest standards of quality.
- Since the establishment of our company, we have achieved high quality and low quality service.
- Our Rubber Gaskets are highly resistant to oil and chemical damage, making them ideal for use in harsh environments.
- Our company is in the leading position among our peers in production scale, production technology, product quality and after-sales service.
- Our Rubber Gaskets are designed to provide a secure and airtight seal for various applications.
- Safety is no small matter, and the lives of employees are above all else.
- We offer competitive prices for our Rubber Gaskets without compromising on quality.
- At present, we have introduced advanced production equipment and strengthened the quality inspection to ensure that our Rubber Syringe Gasket is 100% qualified.
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