Sterile Syringe Piston Seal

With 18 years of production experience in medical sealing accessories, our factory has built Sterile Syringe Piston Seal for sterile syringe scenarios. It is a core precision accessory to ensure the sealing performance and cleanliness grade of sterile syringes. This sealing ring is installed at the front end of the syringe piston, forming a double sealing structure with the inner wall of the syringe barrel, which can not only ensure zero liquid leakage during injection, but also effectively isolate external pollutants from entering the inside of the syringe barrel and maintain the sterile state of the liquid medicine. Sterile Syringe Piston Seal is produced and packaged in a clean environment throughout the process, and the product itself meets the sterile cleanliness requirement, which can be directly used for the assembly and production of sterile syringes without additional sterilization, greatly improving the production efficiency of downstream manufacturers.

Our Sterile Syringe Piston Seal is made of medical-grade high-elastic rubber material, molded by precision compression and secondary vulcanization technology, with excellent rebound performance, no permanent deformation after long-term compression, and stable and lasting sealing performance. The product dimensional accuracy is controlled within ±0.02mm, and the fit clearance with the piston and syringe barrel is precisely adjusted, with uniform and smooth injection resistance, no jamming and no crawling phenomenon. All Sterile Syringe Piston Seals are produced, screened and packaged in a 100,000-class clean workshop. Microbial and particulate pollution are strictly controlled during the production process. The finished products are sterilized by ethylene oxide, sterile, pyrogen-free and impurity-free. With high cleanliness and precise sealing performance, this product has become the designated supporting accessory for many high-end sterile syringe manufacturers.

Mainly matched with the production and assembly of sterile disposable syringes, prefilled medication syringes and precision micro syringes. It can also be applied to devices with high requirements for sealing and cleanliness such as medical injection pumps and laboratory precision liquid transfer equipment.

For the high cleanliness requirement of Sterile Syringe Piston Seal, we have established a quality control system much higher than conventional accessories. Raw materials need to undergo surface disinfection and particle testing before entering the clean area to eliminate exogenous pollution; production operators wear sterile protective equipment throughout the process and implement strict clean workshop operation specifications. During the production process, key dimensions, sealing performance and cleanliness are sampled batch by batch. High-precision measuring instruments are used to verify dimensional tolerances, and sealing reliability is verified through pressure tests. In the finished product stage, 100% appearance screening and microbial sampling inspection are implemented. Each batch of products retains complete cleanliness test records, which can be traced back to each production link. We regularly conduct sedimentation bacteria and particle testing on the production environment to ensure the production environment always meets the 100,000-class cleanliness standard.

We support customized adaptation services for Sterile Syringe Piston Seal, and can adjust the cross-section design, dimensional specifications and rubber hardness of the sealing ring according to the customer's piston structure and syringe barrel size to achieve the best sealing effect and injection feel. For special liquid medicine scenarios, exclusive rubber formulas resistant to acid and alkali, organic solvents and high temperature can be customized to ensure long-term compatibility with liquid medicine. For customers with special cleanliness requirements, high-grade products produced in a 10,000-class clean environment can be provided. The customized sample making cycle is 10-30 working days. The new mold opening fee can be fully deducted from subsequent bulk orders, and the MOQ is flexibly adjusted according to the customization difficulty.

Sterile Syringe Piston Seal adopts special packaging for cleanliness grade, fully ensuring the cleanliness of the product during transportation. The inner packaging uses sterile sealing bags, vacuum-packed in fixed quantities, marked with product information, production batch number and sterilization validity period; the middle layer adopts moisture-proof clean cartons with internal buffer protection; the outer carton uses five-layer reinforced corrugated cartons, sealed with moisture-proof film, with good moisture-proof, dust-proof and compression resistance. The outer carton is clearly marked with product name, specification, quantity, production batch number, validity period and cleanliness warning signs, and is accompanied by a full set of documents such as packing list, product certificate and sterility test report. We support full-box shipment and LCL shipment, and avoid pollution throughout the transportation process to ensure the product still maintains qualified cleanliness when it arrives at customers.