Rubber Material Properties Introduction
There are many types of rubber, each with its own unique physical and chemical properties. Selecting the appropriate material requires a professional evaluation based on the specific needs of the application. Different industries have vastly different performance requirements, making material selection a critical factor in ensuring functionality, durability, and overall success. Choosing the right rubber compound lays a strong foundation for the success of any project.The following is a comparison and introduction of the three materials we commonly use
1. Silicone Rubber Material Properties: Silicone rubber is a food-grade material with excellent properties. It is high-temperature resistant, flexible, durable, non-toxic and odorless, and can be used stably at -60°C to +250°C. Thanks to its good biocompatibility, it’s widely applied in medical devices like catheters and masks. It’s also commonly used in kitchenware such as baking molds and sealing rings, being safe and eco-friendly. In industry, it serves as high-performance components like seals and cable sheaths. With these advantages, silicone rubber plays crucial roles in medical, household, and industrial sectors.
2. EPDM Rubber Material Properties: EPDM is a high-performance synthetic rubber with excellent weather resistance, ozone resistance and chemical resistance. It can be used for a long time in high temperature, strong ultraviolet rays, humidity or extreme cold environment without aging or cracking, and has excellent elasticity and sealing properties. EPDM also has good electrical insulation and water vapor resistance, and is very suitable for automotive sealing strips, door and window sealing systems, roof waterproof strips, outdoor equipment gaskets, etc., especially for applications that require high durability and long life.
3. Nitrile Rubber (NBR) Material Properties: NBR is widely used in various dynamic environments with high mechanical stress due to its excellent oil resistance and chemical resistance to liquid fuels, especially in occasions with frequent contact with petroleum-based liquids, oils and fuels. Its excellent oil resistance is among the best among common elastomers. It also has excellent wear resistance, tear strength and good low-temperature flexibility (as low as -40°C), which can maintain reliable operation and long-term mechanical properties under harsh working conditions. Due to its high cost-effectiveness and wide availability of materials, NBR is often used in key components such as automotive fuel system seals, engine oil seals, and oil seals, seals and gaskets in industrial hydraulic equipment.
4. Natural Rubber Material Properties: It is obtained from the latex of rubber trees. It has excellent high elasticity, resilience and wear resistance, and is suitable for scenes with frequent deformation and dynamic load. It is commonly used in tires, seals, shock absorbers, soles, sports equipment and other products. At the same time, natural rubber has certain environmental protection and is an ideal choice for natural material preference fields such as baby products and agricultural tools. It is a high-performance material that combines elasticity, durability and renewability, and is widely used in industry and life.
At Lanxin, we can provide you with customized processing services for a variety of rubber materials. Each rubber material has unique characteristics and is suitable for different application requirements. In these two charts, we have summarized the physical properties of common rubber materials to help you more intuitively understand the performance characteristics of various materials and make the most appropriate choice. If you need more detailed information or have any product customization requirements, please feel free to contact us.
Advantages & applications of silicone rubber
Through the above data, we can see that silicone has shown its excellent properties in many aspects and is widely used in various fields. At Lanxin, we have been focusing on silicone customization for 30 years. With rich experience, we provide customized silicone solutions for customers around the world. The following cases show product applications and solutions in different fields. If you have any needs, please feel free to contact us.
Cpap Mask
Dental Mouth Guard
Silicone Bellows
1. Biocompatibility
Medical Grade Silicone is non-irritating to skin and tissues, and has passed biocompatibility tests such as USP Class VI and ISO 10993. It can be used in implantable products (such as artificial limbs, mouth guards), medical masks, catheters, etc.
Medical grades which are qualified to meet ISO10993 bio-compatibility.
• Cytotoxicity (ISO10993-5: 2009)
• Sensitization (ISO10993-10: 2010)
• Intracutaneous reactivity (ISO10993-10: 2019)
• Systemic toxicity and subchronic toxicity (ISO10993-11: 2017)
• Hemocompatibility (ISO 10993-4: 2017)
• Genotoxicity (ISO 10993-4: 2017)
2. Safety & Non-toxic
Food-grade silicone complies with FDA and LFGB food safety standards, does not contain bisphenol A(BPA free）or heavy metals. No harmful substances when heated or burned. Widely used in baby products, tableware, baking utensils, etc.
Silicone Kitchen Utensils
Silicone Bowls
Bread Baking Mold
Rubber Cable Umbrella
Valvestem Seal
Automobile Sealing Gasket
Silicone O-ring
3. Heat Resistance & Electrical Insulation & Chemical Resistance
Silicone has a temperature resistance range of -40°C ~ 260°C, and has high electrical insulation, aging resistance, UV resistance, and is widely used in special fields such as the automotive industry, aerospace, and aviation.
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1. Silicone has excellent elasticity and compression resilience. It can maintain stable sealing performance even under long-term pressure.
2. It is resistant to aging and UV rays. It will not crack or turn yellow after long-term use. It is resistant to high and low temperatures( (-60℃ ~ 250℃) and is suitable for dustproof sealing in complex environments such as alternating hit and cold, outdoors, and car engine compartments.
3. It is environmentally friendly and non-toxic, and can reach FDA / FLGB level. It is widely used in kitchenware, food, and medical sealing parts;
4. Electrical insulation is suitable for electrical sealing, waterproof and dustproof protection of electrical components.
4. Mechanical Properties & Easy Processing
Silicone materials have excellent mechanical properties, high tensile strength and easy processing, meeting complex design requirements and precision electronic accessories, such as mobile phones, cameras and other micro-precision accessories.
At the same time, through overmolding and embedding processes, silicone and other materials such as plastics and metals can be combined into an integral component to meet the application requirements of various fields.
Silicone Overmolding Parts
Micro Precision Parts
Silicone Optical Components
Optically Clear Silicone
Optical Silicone Rubber
5. Transparency
High-transparency silicone offers excellent optical properties and weather resistance, with a light transmittance of 92%-95%, closely resembling that of glass. It serves as a superior alternative to traditional PMMA or PC materials, providing better thermal stability and longer lifespan. It is widely used in industries such as lighting, medical, and consumer electronics.
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1. High and Low-temperature Resistance: Can be used for long periods within the range of -60°C to +250°C.
2. Yellowing Resistance:Maintains high transparency even after prolonged exposure to light or thermal aging.
3. Ease of Processing:Can be processed into complex light guide components using methods such as liquid injection molding(LSR), compression molding, and extrusion.
4. Product Use Cases: LED lenses, lamp covers,light strips, light guide pillars,and other components.
In addition to the Tolerances for rubber moulded parts form, we also have more detailed information, such as the company’s main silicone rubber products and discount prices…
Please contact us through services@cn-lanxin.com or other ways, we can send relevant documents for your reference, welcome to consult.