What are the application scenarios of rubber gaskets?

Due to their excellent elasticity, sealing performance, corrosion resistance and shock absorption properties, rubber gaskets are widely used in various fields such as industry, automobiles, construction, electronics, and healthcare. Here are the main application scenarios of rubber gaskets and specific examples:

I. Industrial Field

1. Pipeline and Valve Sealing

Nitrile rubber (NBR) gaskets are used for sealing fuel pipelines.

Fluororubber (FKM) gaskets are used for transporting highly corrosive chemical media.

Ethylene propylene diene monomer (EPDM) gaskets are used for steam pipelines or hot water systems.

Scenario: Pipeline connections in industries such as petroleum, chemical engineering, natural gas, and water treatment.

Function: Prevent liquid or gas leakage, withstand high pressure, high temperature, and chemical corrosion.

2. Flange Connection Sealing

Metal wound gaskets (with rubber on the outer layer) are used for high-pressure flange sealing.

Chloroprene rubber (CR) gaskets are used for outdoor equipment flange connections (with strong weather resistance).

Scenario: Flange interfaces of large equipment (such as reactors, heat exchangers, boilers).

Function: Fill in the tiny unevenness of the flange surface to ensure sealing reliability.

3. Hydraulic and Pneumatic Systems

O-rings and U-rings are used for dynamic sealing of piston rods.

Polyurethane (PU) gaskets are used in high-wear environments (such as hydraulic systems in mining machinery).

Scenario: Hydraulic cylinders or air cylinders of equipment such as construction machinery, machine tools, and injection molding machines.

Function: Prevent leakage of hydraulic oil or compressed air, maintain stable system pressure.

II. Automotive Industry

1. Engine and Transmission Systems

Fluororubber (FKM) gaskets are used for the high-temperature oil seals of turbochargers.

Acrylate rubber (ACM) gaskets are used for the sealing of automotive radiators.

Scenario: Engine cylinder heads, oil pans, transmissions, differentials, etc.

Function: Prevent leakage of engine oil and coolant, isolate dust and impurities.

2. Fuel System

NBR (Nitrile Butadiene Rubber) gaskets are used for sealing gasoline or diesel pipelines.

HNBR (Hydrogenated Nitrile Butadiene Rubber) gaskets are used in high-pressure common rail fuel systems.

Application: Resistant to fuel corrosion, preventing leakage and potential safety hazards.

Note: This applies to components such as fuel pumps, fuel pipelines, and fuel injectors.

3. Chassis and Suspension System

Natural rubber (NR) gaskets are used for normal damping scenarios.

Silicone rubber (VMQ) gaskets are used in high-temperature environments (such as engine compartment suspension).

Application: Parts such as shock absorbers, bushings, and dust covers.

Function: Absorb vibrations, reduce noise, and protect metal components.

III. Construction and Municipal Engineering

1. Pipe Joint Sealing

EPDM (Ethylene Propylene Diene Monomer) rubber gaskets are used for drinking water pipelines (non-toxic and odorless).

CR (Chloroprene) rubber gaskets are used for outdoor gas pipelines (high weather resistance).

Scenario: Connections of water supply and drainage pipelines, fire protection pipelines, gas pipelines.

Function: Prevent water leakage or gas leakage, ensuring the safe operation of the pipeline system.

2. Waterproofing and Moisture Prevention

Self-expanding rubber gaskets are used for sealing of underground pipelines through walls (automatically expand when wet).

Butyl rubber gaskets are used for sealing of joint seams of roof waterproofing sheets.

Scenario: Waterproof layers in roofs, basements, bathrooms, etc.

Function: Prevent water penetration, protecting the building structure.

3. Doors, Windows and Curtain Walls

EPDM (Ethylene Propylene Diene Monomer) sealing strips are used for high-end building doors and windows.

Silicone rubber gaskets are used for flexible connection between curtain wall glass and frame.

Scenario: Sealing strips for aluminum alloy doors and windows, glass curtain walls.

Function: Isolate air and rain, improve sound insulation and heat insulation performance.

IV. Electronics and Electrical Industry

1. Electrical Insulation

Silicone rubber gaskets are used for insulation support of high-voltage electrical equipment (high temperature resistance, arc resistance).

EPDM (Ethylene Propylene Diene Monomer) gaskets are used for sealing of low-voltage electrical equipment (good water resistance).

Scenario: Electrical components such as transformers, capacitors, switchgear.

Function: Prevent leakage and short circuit, ensuring the safe operation of the equipment.

2. Shock Resistance and Buffering

Natural rubber gaskets are used for shock resistance of ordinary electronic devices.

PU (Polyurethane) gaskets are used for high-load equipment (such as server enclosures).

Scenario: Hard disk drives, precision instruments, electronic displays, etc.

Function: Absorb vibration, protect precision components from shock damage.

3. Electromagnetic Shielding

Conductive rubber gaskets (silicone rubber mixed with metal particles) are used for sealing of shielding boxes.

Scenario: RF equipment, microwave ovens, EMC test chambers.

Function: Prevent electromagnetic interference (EMI) leakage or invasion.

V. Medical and Food Industry

1. Medical Device Sealing

Silicone rubber gaskets are used for connection of medical catheters (physiologically inert, non-toxic).

FKM (Fluororubber) gaskets are used for medical equipment resistant to chemical corrosion.

Scenario: Equipment such as infusion pumps, ventilators, blood dialysis machines, etc.

Function: Prevent liquid or gas leakage, ensuring the sterile operation of the equipment.

2. Food Processing Equipment

Silicone rubber gaskets that meet FDA standards are used for sealing of food transportation pipelines.

EPDM (Ethylene Propylene Diene Monomer) gaskets are used for low-temperature food storage equipment.

Scenario: Beverage production lines, dairy equipment, baking machinery, etc.

Function: Prevent food contamination, comply with hygiene standards.

VI. Aerospace and Shipbuilding Field

1. Aerospace

FKM (Fluororubber) gaskets are used for aircraft hydraulic systems (resistant to fuel, high temperature).

Silicone rubber gaskets are used for the thermal protection system of spacecraft (resistant to radiation, low temperature).

Scenario: Aircraft fuel systems, hydraulic systems, engine seals.

Function: Resistant to extreme temperatures, high pressure and high vacuum environments.

2. Shipbuilding

CR (Chloroprene) gaskets are used for sealing of ship cabin doors (resistant to salt fog).

NBR (Nitrile Butadiene Rubber) gaskets are used for ship fuel pipelines.

Scenario: Ship body sealing, pipeline systems, deck equipment.

Function: Resistant to seawater corrosion, preventing leakage.

The application scenarios of rubber gaskets cover various fields from daily life to high-end industries. The core value lies in filling gaps through elastic deformation to achieve sealing, vibration reduction, insulation or anti-slip functions. When choosing, factors such as medium type, temperature range, pressure level and hygiene standards should be comprehensively considered to ensure optimal performance and safety.

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