Main functions of rubber plugs:

Sealing orifices

Rubber plugs are mainly used to seal or seal orifices of various pipes, equipment ports, containers, valves, etc. to prevent air, liquid or gas leakage.

Dust and dirt prevention

During storage and transportation, rubber plugs can effectively prevent dust, dirt, impurities, etc. from entering pipes or equipment, keeping the inside of the equipment clean.

Preventing liquid leakage

Rubber plugs can effectively prevent liquids (such as water, oil, chemical liquids) from leaking from pipes or containers, and are common protective accessories during liquid transportation.

Protective parts

Rubber plugs are used to prevent equipment and pipe ports from being damaged by the external environment, especially to avoid mechanical damage, collision, etc. during transportation or storage.

Temporary closure

During equipment repair or maintenance, rubber plugs can be used as temporary plugging parts to easily and quickly close pipes, joints, etc. to avoid pollution or leakage.

Characteristics of rubber plugs:

Good elasticity

The elasticity of rubber materials enables rubber plugs to fit tightly to orifices of different shapes and sizes, ensuring a good sealing effect.

Chemical resistance

Depending on the type of rubber used (such as nitrile rubber, silicone rubber, etc.), rubber plugs can provide good resistance to oil, acid, alkali, solvents, etc., and are suitable for chemical, petroleum and other industries.

High and low temperature resistance

The temperature resistance of rubber plugs depends on the type of material. Some high-performance rubbers (such as silicone rubber, fluororubber, etc.) can work stably at higher or lower temperatures.

Aging resistance

High-quality rubber plugs usually have a long service life and can resist aging from factors such as ultraviolet rays, ozone, oxygen, etc., and are suitable for long-term use.

Easy to install and remove

The design of rubber plugs makes installation and removal very convenient, and usually does not require complex tools to complete the operation.

Common types of rubber plugs:

Pipeline rubber plugs

Used to close the pipe port to prevent liquid, gas or pollutants from entering. Commonly used in different types of pipes such as water pipes, oil pipes, gas pipes, etc.

Threaded rubber plugs

With internal or external thread design, they can be used for equipment ports with threaded orifices to ensure a tight seal.

Gas rubber plugs

Specially used to close the orifices of gas pipes or containers to prevent gas leakage or external air from entering.

Medical rubber plugs

Mainly used in the pharmaceutical industry, especially in the sealing of medicine bottles, syringes, and drug containers to ensure their safety and hygiene.

Laboratory rubber plugs

In the laboratory, they are used to seal test tubes, flasks, bottle mouths, etc. to prevent samples from being contaminated or evaporating.

Automobile rubber plugs

Used to seal the openings of components such as automobile engines, pipes, and air-conditioning systems to prevent dust, oil, and impurities from entering.

Common rubber materials:

Natural rubber

Suitable for general use, with good elasticity and flexibility, but poor resistance to some chemicals.

Nitrile rubber (NBR)

Has good oil resistance and wear resistance, and is suitable for places where oil, fuel, lubricants, etc. are in contact.

Silicone rubber (Silicone)

Has excellent high temperature resistance, low temperature resistance, and oxidation resistance, and is suitable for extreme temperature environments.

Fluororubber (Viton)

Suitable for highly corrosive environments, can withstand chemicals such as acids, alkalis, and solvents, and is widely used in chemical, petroleum and other industries.

EPDM rubber

It has good tolerance to ultraviolet rays, ozone, temperature difference, etc., and is suitable for outdoor environments and areas with large climate changes.

Application areas of rubber plugs:

Chemical and petroleum industries

Used to seal pipeline ports to prevent leakage or contamination of harmful chemicals.

Automotive industry

In automobile manufacturing and maintenance, rubber plugs are used to seal oil pipes, air pipes, engine interfaces, etc. to prevent impurities from entering.

Water treatment industry

Used in water pipe systems to prevent sewage or water pollutants from entering the pipeline.

Food and pharmaceutical industries

In pharmaceutical packaging and food processing equipment, rubber plugs are used to seal containers to ensure the safety and hygiene of the contents.

Laboratory equipment

In various experimental containers, such as test tubes, flasks, bottle mouths, etc., rubber plugs are used for sealing to prevent contamination and evaporation.

Electronics industry

Used to protect electronic components, connectors and battery ports, etc., to avoid the intrusion of dust, sewage, and impurities.

Installation method of rubber plugs:

Simple insertion: Most rubber plugs are directly inserted into the orifices or pipe ports that need to be blocked, and a seal is formed through the elasticity of the rubber.

Threaded fastening: Some threaded rubber plugs need to be screwed into the orifice to ensure close contact and good sealing between them and the port.

Summary:

Rubber plugs are an economical, practical and versatile sealing component that is widely used in various industries. Due to its advantages such as elasticity, chemical resistance and high temperature resistance, rubber plugs can play an important role in many occasions that require sealing, protection and barrier.