How To Select The Silicone Rubber Row Material

How To Select The Silicone Rubber Raw Material

Due to their unique chemical and physical properties, silicone materials are used in many industries. Silicone can be classified according to their characteristics, processing methods and application. Here is a brief introduction to the most common types of silicone rubber:

1.General Silicone Rubber

It is mainly used in everyday items, industrial components, electronic products etc. It is resistant to both high and low temperature, ageing, elasticity and electrical insulation.

Characteristics
Temperature range	-60degC up to +200degC
Hardness range	Typically, Shore A is 20-80. This range is suitable for products that have different hardness requirements.
Physical properties	Good flexibility and elasticity, resistant to UV and oxidation, ozone.
USE	Gaskets, seals, keyboard keys and household appliance parts.

2.Food-Grade Silicone Rubber

Applications： Used on products that are in direct contact with foods, such as seals, kitchenware, and baby products.

Characteristics
Nontoxic and Odorless	Free from harmful substances and compliant with the food safety standards of FDA (U.S. Food and Drug Administration), and LFGB.
Temperature range	-40degC up to +230degC. Suitable for use in microwaves and dishwashers.
Easy To Clean	Smooth Surface, Resistant to Oil Stains, Good Antibacterial Properties
USE	Silicone tablewares, baking molds for baby pacifiers and silicone food containers.

3.Medical-Grade Silicone Rubber

Applications： Used for medical supplies and devices, such as catheters.

Characteristics
Biocompatibility	Highly compatible with human tissues, minimizing the risk of rejection or allergic reactions.
High purity	No additives. Non-toxic and odorless. Meets strict medical industry standards.
Sterilization tolerance	Able to withstand different sterilization methods such as autoclaving, ethylene dioxide, and gamma rays.
USE	Medical catheters (catheters), surgical instrument handles (handles), implants, drug delivery system, etc.

4.Liquid Silicone Rubber (LSR)

Applications： Used for precision-molded parts such as automotive, medical, and electronic components.

Characteristics
Liquid form	Silicone at room temperature is in a liquid state, which allows for easy injection molding and high fluidity.
High-Precision Molding	Ideal for complex-shaped molds, which result in products with high precision and consistency.
High transparency	This silicone is often transparent, making it ideal for semi-transparent or clear products.
Excellent temperature resistance	Wide temperature range, usually from -60degC up to +250degC.
USE	Baby products, medical devices, keyboards keys, automotive seals etc.

5.High-Tear Silicone Rubber

Applications：Used in products that require high strength and durability such as seals, protective parts for industrial applications, etc.

Characteristics
High Tear Resistant	High tear resistance, resistant to wear and fatigue, ideal for applications that have dynamic loads.
Elastic retention	Maintains good shape and elasticity even under high pressure.
Weather Resistant	Excellent resistance to UV, Ozone and Weathering. Suitable for outdoor use.
USE	High-strength seals, industrial belts, automotive protective parts, etc.

6.High-Temperature Silicone Rubber

Applications: Ideal for high-temperature products, such as industrial oven gaskets and heat-resistant seals.

Characteristics
Excellent high-temperature resistance	Can use long-term for environments between 250degC and 300degC. Some specialized silicones can tolerate even higher temperatures.
Superior chemical resistance	Resistant against oils, acids and alkalis.
USE	High-temperature gaskets, heat-resistant tubing, industrial oven components, etc.

7.Conductive Silicone Rubber

Applications： Used for electronic products like buttons, conductive connectors and touch panels.

Characteristics
Conductivity	This is achieved by adding conductive fillers to silicone (e.g. carbon black or silver powder).
Flexibility & Elasticity	Preserves the flexibility and elastic of silicone, while maintaining conductivity.
Stability	Conductivity stable, suitable for use over a long period of time in electronic components.
USE	Buttons for mobile phones, buttons on remote controls, conductive connectors etc.

8.Oil-Resistant Silicone Rubber

Applications：Used for products that come into contact oil, such as automotive gaskets and industrial machinery seals.

Characteristics
Oil Resistant	Excellent resistance against mineral, vegetable and synthetic oils. Suitable for applications that require oil contact.
Aging Resistant	Maintains performance without cracking or deteriorating over time.
USE	Automotive engine seals, oil tank gaskets, industrial equipment protection parts, etc.

Each silicone type has different properties and applications. It is important to choose the correct silicone material for the project in order to ensure the durability and safety of the end product.

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