Liquid Tank Silicone Sealing Ring

I. Raw Material Description
The sealing rings for medical equipment liquid tanks are manufactured with imported medical-grade silicone of 60 Shore hardness as the core raw material. The material fully complies with relevant standards for the biocompatibility of medical devices, making it a dedicated material suited for the harsh operating environments of medical equipment.
Formulated to a Shore A hardness of 65, this raw material strikes an optimal balance of moderate hardness and exceptional elasticity. It endows the sealing rings with sufficient structural support and deformation resistance, preventing collapse and slackening after prolonged compression and repeated opening/closing cycles. Meanwhile, it retains outstanding rebound sealing performance, enabling perfect adhesion to the contact surfaces of equipment liquid tanks and eliminating leakage through gaps.
This imported medical-grade silicone boasts exceptional material stability: it is non-toxic, odorless, non-bleeding and non-contaminating, free of heavy metals, hazardous substances and allergenic ingredients. Having passed multiple medical-grade safety tests, it withstands various sterilization methods including routine high-temperature high-pressure disinfection and UV disinfection. It resists aging, discoloration and cracking over long-term service, and will not chemically react with medical liquids or cleaning solvents, thus avoiding secondary contamination of equipment media and operating environments. Additionally, the material delivers excellent resistance to high and low temperatures, aging and hydrolysis, meeting the demand for long-term continuous operation of medical equipment with full safety compliance and reliable quality.
II. Raw Material Performance Parameters

III. Production Process
The products are manufactured by precision compression integral molding technology, with the whole production process following standardized medical device manufacturing workflows. This process eliminates defects such as gaps, easy fracture and poor sealing performance caused by splicing and bonding processes. High-precision molds are adopted for shaping during production to precisely control dimensional tolerances, flatness and arc fitting degree of products. It ensures uniform specifications, regular shapes and dense, homogeneous structure for every sealing ring, thus guaranteeing stable sealing performance and structural strength from the root of manufacturing technology. The integral molding process delivers superior overall toughness, excellent tensile resistance and wear resistance. The products can withstand repeated assembly, disassembly and compression, greatly extending their service life.
To meet the cleanliness requirements for medical devices, the entire workflow including production, demolding, trimming, inspection, packaging and warehousing is completed in dust-free clean workshops to strictly avoid contamination by dust, impurities and bacteria. A full inspection procedure is implemented after production. Operators screen every single product item by item against key indicators including dimensional accuracy, surface smoothness, elastic rebound, flatness of sealing contact surfaces and surface flaws to reject non-conforming products and tightly control yield rate. The quality control mode combining full-process dust-free production and 100% full inspection prior to warehousing thoroughly ensures product cleanliness, consistency and safety, fully meeting the high standard access requirements for medical devices.

IV. Product Application Scenarios
These silicone liquid tank sealing rings are custom-designed for liquid storage and liquid supply systems of various medical devices. Their core function is to provide sealed connections for liquid tanks of medical equipment, eliminating liquid seepage and gas leakage, and ensuring the tightness and stability of equipment fluid circuits. They are applicable to all medical devices requiring liquid storage, water delivery and liquid control.
Main Application Coverage:

Sealing positions of liquid tanks, liquid storage tanks, waste liquid tanks and purified water tanks on medical and laboratory equipment, including medical cleaning equipment, medical infusion devices, anesthesia machines, respiratory medical equipment, medical pure water systems, supporting disinfection and sterilization equipment, laboratory medical liquid storage instruments, etc. They can be used for long-term sealing storage of medical clean water, disinfectant solutions and standard medical media, and effectively resolve common issues such as water seepage, liquid leakage and air intake pressure loss at liquid tank connectors.
Built on medical-grade safe materials and high-cleanliness production standards, the product suits high-standard sterile environments including hospital operating rooms, clinical laboratories, intensive care units and medical labs. It adapts to working conditions such as daily equipment operation, regular disinfection and frequent start-stop cycles, serving as an indispensable core sealing component for all medical fluid circuit equipment.