what are the properties of medical silicone tubes and which industries are they suitable for?

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Due to the excellent characteristics of silicone medical grade tubing and the characteristics of fine tubes being environmentally friendly, non-toxic, harmless and odorless, in recent years, the silicone products of silicone products factories have been growing year by year. The application of silicone has been very extensive, and the number and variety are also growing, covering various fields.

Performance of medical silicone tubes Silicone tubes are also commonly used in medical applications. Generally speaking, ordinary food-grade silicone tubes will slowly turn yellow after being used for a period of time, and their physiological inertia will also be weakened under long-term use. In the medical field, the requirements for silicone tubes are very strict and must be guaranteed not to harm the human body. Therefore, ordinary food-grade silicone tubes are far from meeting this requirement.

Medical silicone tubes are platinum vulcanized and are made by using imported gas phase glue as raw material and adding a vulcanizing agent and rapidly vulcanized at high temperatures. The medical silicone tube produced in this way has the characteristics of environmental protection, high efficiency, odorless, high transparency, anti-yellowing, long service life, excellent physiological inertness, and aging resistance. Its inner diameter can reach as small as 0.3mm and has strictly passed the biocompatibility test. No adverse reactions will occur after implantation into the human body. Therefore, it is increasingly widely used in the medical sector and health care.

The properties of medical silicone tubes are as follows:

1. . High purity, transparency, high hygiene level, environmentally friendly, efficient and odorless, and can be sterilized by high temperature and high pressure;

2. Medical silicone tubes have good physiological inertness and will not cause harm to human tissues. They will not cause foreign body reactions after entering human tissues and will not cause inflammation in surrounding tissues;

3. High tensile strength, high tear resistance, low shrinkage and good resilience;

4. It has strong resistance to high and low temperatures, will not deform under high temperatures, will not produce decomposed harmful substances, is physiologically inert, and has strong resistance to biological aging;

5. It has a high level of hygiene and environmental protection, and has passed food-grade safety testing such as the US FDA and German LFGB.

Properties of Medical Grade Silicone Tubing

Silicone Material and Manufacturing

Medical-grade silicone is a specialized material that plays a pivotal role in the medical and pharmaceutical industries. It is a type of silicone rubber that is formulated to meet stringent medical standards. Let’s delve into its composition and manufacturing process:

What is Medical-Grade Silicone?

Medical-grade silicone is a silicone material that is highly purified and refined to ensure its safety and biocompatibility for use in medical devices and applications. It is specifically designed to meet the unique requirements of the medical industry, making it a preferred choice of silicone materials for various medical and pharmaceutical applications.

Manufacturing Process

The manufacturing of medical-grade silicone tubing involves precision and quality control at every step. Two essential processes are commonly used:

  1. Platinum Cure Grade Tubing: This method utilizes platinum as a catalyst for curing the silicone. It offers exceptional purity and consistency, making it suitable for medical and pharmaceutical use. Platinum cure silicone is known for its biocompatibility and flexibility.
  2. Liquid Silicone Rubber (LSR): LSR is another popular method for manufacturing medical silicone tubing. It involves injecting liquid silicone into molds, which are then heat-cured to create the final product. LSR offers excellent clarity and is often used in applications requiring high transparency.

Importance of FDA Grade Silicone

One of the critical aspects of medical-grade silicone is its compliance with the standards set by the U.S. Food and Drug Administration (FDA). FDA grade silicone undergoes rigorous testing to ensure its safety and suitability for medical use. This certification provides assurance to medical professionals and patients that the material meets the highest standards for quality and biocompatibility.

Physical Properties

The physical properties of silicone rubber tubing that make it an indispensable material for various medical applications. Let’s explore these properties and their significance:

Temperature Resistance

Silicone tubing exhibits remarkable temperature resistance. It can withstand both high and low temperatures, making it ideal for applications where extreme temperature changes may occur. This property ensures the tubing’s stability and performance, even in challenging environments.

Chemical Inertness

Silicone is chemically inert, which means it does not react with most chemicals or substances it comes into contact with. This property is crucial in medical tubing applications where the tubing must remain unaffected by the substances it transports, ensuring patient safety and preventing contamination.

Translucent Quality

The translucent quality of silicone tubing allows for visual inspection of fluids passing through it. This transparency is valuable in medical procedures where the flow and condition of fluids need to be monitored closely.

Crucial for Medical Applications

These physical properties collectively make medical-grade silicone tubing an indispensable material in the medical industry. Its ability to withstand extreme temperatures, resist chemical reactions, and maintain transparency is crucial for ensuring the safety and efficacy of broad range of medical devices and procedures.

In the next sections, we will explore how these properties enable safe fluid transfer and its applications in the medical industry, including peristaltic pumps, catheters management, and feeding tubes.

The difference between pharmaceutical silicone tube and medical silicone tube:

Both pharmaceutical silicone tubes and medical silicone tubes are sanitary-grade hoses. The hoses must meet sanitary-grade standards and do not contain harmful substances such as plasticizers and will not affect the transmission medium. The hose is transparent so you can clearly see the flow of the medium. It is chemically inert and will not react chemically with the transport medium. Sanitary silicone hose has good resistance to high and low temperatures and is usually used as a connecting hose for some medical equipment or as a Conveyor hoses used in pharmaceutical factories to transport medicinal liquids, medicinal powders and chemical reaction reagents, as well as vacuum weighing, high-end laboratories, human surgery and other industries.

In addition to great similarities in quality, grade, etc., pharmaceutical silicone tubes and medical silicone tubes also have many differences. These differences are mainly reflected in the different usage requirements and usage environments of hoses. Medical silicone tubes are mainly used for connections between medical equipment or for direct contact with the human body. They mainly use small-diameter all-plastic transparent silicone hoses or single-layer braided silicone tubes. Such hoses need to meet medical-grade requirements and cannot Contains harmful substances or reacts with the human body, etc.

Pharmaceutical-grade silicone tubes are mainly used for supporting large-scale pharmaceutical equipment. They are used to transport organic solvents, strong acids and alkalis, or extract medicinal liquids. The hoses need to meet sanitary standards and will not affect or react with the transport medium. At the same time, it is required The hose has certain resistance to high temperature, high pressure or acid and alkali. Large-diameter silicone tubes such as silicone steel wire hoses and four-layer braided silicone tubes are mostly used in the pharmaceutical industry. With the continuous development of domestic silicone tube technology, domestic silicone tubes are now entering the high-end silicone tube market.

The difference between pharmaceutical silicone tubes and medical silicone tubes. In addition to the similarities in medical rubber tubing and quality, there are many differences. These differences are mainly reflected in the use, requirements and use environment of the hoses.

Medical silicone tube: Mainly used for connection between medical equipment, or direct contact with the human body. It mainly uses small-diameter all-plastic transparent silicone hose or single-layer braided silicone tube. This type of hose needs to meet medical grade requirements. It is safe, non-toxic and has high hygienic performance. Pharmaceutical silicone tube: Mainly used for supporting large-scale pharmaceutical equipment. It is used to transport organic solvents, strong acid and alkali materials or extract medicinal liquids. The hose needs to meet sanitary standards and will not affect or react with the transport medium. At the same time, it is required The hose has certain properties such as high temperature resistance, high transparency, no impurities, wear resistance, high pressure resistance or acid and alkali resistance.

What are the uses of medical silicone tubes:

Mainly used in clinical medical treatment, medical diversion, biopharmaceuticals, medical scientific research, small household appliances, medical analysis instruments, ventilators, food and beverage transmission, dairy products, beer, peristaltic pumps, veterinary pharmaceuticals, chemicals and other industrial fields!

In short, medical silicone tubes are inspected step by step by relevant departments, and the intensity of inspection is also very high. Unqualified products are defective products, so the price of medical silicone tubes is generally much higher than the price of other silicone tubes of the same specifications. Medical silicone tubes have excellent performance, so they are widely used in oxygen ventilators, medical catheters, pharmaceutical equipment, infusion catheters, cosmetics, biological research, chemical experiments, food and beverage transmission, veterinary pharmaceuticals and other fields.

Applications in the Medical Industry

Medical Devices

Silicone tubing is an integral component in various medical devices, playing a critical role in ensuring patient safety and device functionality. Here’s an overview of its applications in medical devices, with a particular emphasis on catheter tubing and surgical drains:

Catheter Tubing

Catheters are essential medical instruments used for various purposes, including draining fluids, administering medication, and monitoring vital signs. Silicone tubing is commonly used in catheters due to its flexibility, biocompatibility, and resistance to bodily fluids. Its smooth surface reduces the risk of tissue damage during insertion and ensures patient comfort. Silicone catheter tubing is also known for its durability and ability to maintain its properties over extended periods, making it a reliable choice for medical professionals.

Surgical Drains

Surgical drains are used to remove excess fluids or air from surgical sites, promoting faster healing and reducing the risk of complications. Silicone tubing is favored for surgical drains because it resists kinking, allowing for smooth and consistent drainage. Its biocompatibility ensures that it can remain in contact with bodily tissues without causing adverse reactions. Additionally, the transparency of silicone tubing allows medical professionals to monitor the drainage fluid’s color and consistency, providing valuable insights into the patient’s condition.

Emphasis on Patient Safety

The use of medical-grade silicone tubing in these devices underscores its importance for patient safety. Silicone’s biocompatibility and ability to resist reactions with bodily fluids minimize the risk of complications and infections. Its reliability ensures that medical devices perform effectively, enhancing the overall quality of patient care.

Implantable Medical Devices

Silicone tubing is not limited to external medical devices; it also plays a crucial role in implantable medical devices. Let’s explore how it contributes to the field of implantable medical technology:


Silicone tubing is highly biocompatible, meaning it can safely coexist with living tissues without causing adverse reactions. This property is paramount in implantable medical devices such as artificial joints, pacemakers, and insulin pumps. The use of biocompatible silicone tubing minimizes the risk of rejection or inflammation, enhancing the longevity and effectiveness of these devices.

Molecular Stability

Implantable medical devices require materials with exceptional molecular stability. Silicone tubing maintains its structural integrity even when exposed to bodily fluids, ensuring that it continues to function correctly over time. This stability is essential for the consistent performance of implantable devices, which are often critical to a patient’s health and well-being.

Pharmaceutical and Tissue Culture Systems

Beyond medical devices, medical-grade silicone tubing finds valuable applications in pharmaceutical and tissue culture systems. Here’s how it contributes to these industries:

Pharmaceutical Industries

Silicone tubing is used in pharmaceutical manufacturing processes, where it facilitates the safe transfer of various liquids and chemicals. Its chemical inertness ensures that it does not react with the substances it transports, eliminating the risk of contamination. This is particularly important in pharmaceutical production, where product purity and consistency are paramount.

Tissue Culture Systems

In tissue culture systems, silicone tubing serves as a reliable conduit for the transport of nutrients, media, and biological samples. Its biocompatibility and chemical inertness are crucial in maintaining the integrity of cell cultures. Silicone tubing’s ability to eliminate contamination risks ensures the reliability of experiments and research conducted in tissue culture systems.

In conclusion, medical-grade silicone tubing plays a multifaceted role in the medical industry, from ensuring the safety and functionality of medical devices to enabling critical applications in pharmaceutical and tissue culture systems. Its biocompatibility, molecular stability, and resistance to contamination make it an indispensable material for advancing healthcare and improving patient outcomes.


The manufacturing processes behind silicone tubing, including extrusion, molding, and vulcanization, allow for the production of tailored solutions that meet specific industry needs.

In conclusion, medical grade silicone tubing is not just a component; it is a lifeline. Its incredible versatility and crucial role in healthcare and multiple industries make it an essential material in modern technology and innovation. As we continue to advance in medical and industrial processes, silicone tubing will remain a cornerstone in providing safe, reliable, and effective solutions for a healthier world.

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