Silicone rubber sleeve

Rubber is a category of high-elasticity polymers. It can undergo significant deformation when subjected to external forces and quickly revert to its original shape. Thanks to this unique physical property, rubber has become an indispensable material in industrial production and daily life.

Based on sources and preparation methods, rubber is divided into two major categories: natural rubber and synthetic rubber.

It is mainly produced by extracting latex from plants such as rubber trees and rubber dandelions, followed by processing through coagulation, drying, and other processes. Its advantages include excellent elasticity, high tensile strength, and good flex resistance, making it widely used in fields requiring high elasticity—such as tires and rubber belts. However, it has relatively poor oil resistance and aging resistance, and its output is limited by natural environment and planting conditions.

It is prepared via chemical synthesis using raw materials like petroleum and natural gas. According to different performance requirements, it can be further divided into various types, including styrene-butadiene rubber (SBR), polybutadiene rubber (BR), chloroprene rubber (CR), and silicone rubber. For example, SBR is low-cost and has good wear resistance, making it a primary raw material in the tire industry; silicone rubber, with excellent high-temperature resistance, low-temperature resistance, and insulation properties, is commonly used in electronics and medical fields. Synthetic rubber compensates for the performance shortcomings of natural rubber and has controllable output, effectively meeting the diverse needs of different industries.

The wide application of rubber is closely tied to its unique properties, which mainly include:

This is the most prominent feature of rubber. Its elastic deformation capacity can reach 100%-1000%, and it can rebound quickly after the external force is removed—far exceeding other polymer materials. Therefore, it is used to manufacture products requiring repeated deformation, such as seals and shock absorbers.

Most rubbers (e.g., natural rubber, butyl rubber) have excellent electrical insulation properties, which can effectively block electric current. They are ideal materials for wire and cable insulation layers and electrical equipment seals.

Some special rubbers (e.g., chloroprene rubber, fluororubber) can resist erosion from environmental factors such as sunlight, ozone, acids, and alkalis. They perform stably in harsh environments like outdoor equipment and chemical pipeline sealing.

Rubber has a low elastic modulus, enabling it to absorb external impact forces and reduce vibration transmission. It is often used in products such as automobile shock absorbers, mechanical shock pads, and sports shoe soles to improve comfort and equipment stability.

Rubber is used in almost all industries, with key application areas including:

It is a core raw material for industrial accessories such as tires, conveyor belts, seals, and hoses. For instance, rubber accounts for approximately 60% of the composition of automobile tires, ensuring the tires’ wear resistance and grip; rubber seals for industrial pipelines achieve leak-proof sealing and ensure production safety.

In addition to tires, automotive shock absorption systems (shock-absorbing rubber blocks), sealing systems (door weatherstrips, window gaskets), and braking systems (brake hoses) all rely on rubber products. Their performance directly affects the safety, comfort, and durability of automobiles.

From daily necessities like raincoats, gloves, and hot water bottles to consumer products like erasers, sports shoe soles, and yoga mats, rubber provides convenience for life with its softness and good elasticity. Furthermore, silicone rubber products for kitchens—such as silicone spatulas and food storage lids—also have the advantages of high-temperature resistance and easy cleaning.

Medical rubber products must meet the requirements of non-toxicity, sterility, and resistance to biological aging, such as rubber gloves, syringe stoppers, blood transfusion tubes, and artificial organs (e.g., artificial heart valve seals). Among them, silicone rubber is particularly widely used in the medical field due to its good biocompatibility.