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External thread frame oil seal is an oil seal with an external thread structure, specially designed for sealing applications that require threaded installation.
External thread frame oil seal is an oil seal with an external thread structure, specially designed for sealing applications that require threaded installation.

Product
Description

Specification

parameter

Production
Process

type

Application
Scenario

Features

01.

Product
Description

External thread frame oil seal is an oil seal with an external thread structure, specially designed for sealing applications that require threaded installation.
Unlike traditional oil seals, external thread frame oil seals are tightly fixed to equipment housings or bearing seats through external threads to ensure better sealing effects. It is commonly used in industries such as mechanical equipment, automobiles, and ships. It can effectively prevent lubricating oil leakage and prevent external dirt, dust, moisture, etc. from entering the equipment, extending the service life of the equipment. External thread frame oil seals are widely used in working conditions that require special installation and sealing requirements, and have excellent high temperature resistance, oil resistance, and wear resistance.

02.

Specification

Material NBR (nitrile rubber), FKM (fluororubber), HNBR (hydrogenated nitrile rubber), EPDM (propylene rubber), etc.
Color Black, blue, brown, etc. (customized according to needs)
Size Customized according to equipment and shaft diameter requirements to meet different installation needs
Temperature range -30℃ to +150℃ (high temperature type can reach +200℃)
Temperature resistance Excellent high temperature resistance, suitable for high temperature working environment
Wear resistance Strong wear resistance, suitable for long-term high-speed operation
Customized Design Size, material, thread specifications, etc. can be customized according to customer needs
03.

parameter

Inner diameter range

Common inner diameter ranges from 20mm to 300mm, designed according to the equipment shaft diameter

Outer diameter range

Designed according to the requirements of the equipment housing or installation location

Thickness range

Common thickness is 5mm to 20mm, customization is supported

Operating temperature

-30℃ to +150℃ (special high temperature resistant version can reach +200℃)

Applicable media

Lubricating oil, hydraulic oil, gear oil, liquids, etc.

Rotation speed

Suitable for medium and low speed rotation applications, up to 15m/s

Pressure resistance

The pressure resistance is usually 1MPa to 3MPa, which can be customized according to customer needs.

04.

Production
Process

Metal frame manufacturing

The external thread frame is made of high-strength metal materials to ensure its stability and durability during installation.

Rubber molding

Select appropriate rubber materials (such as NBR, FKM, etc.) according to design requirements and perform rubber molding to ensure that the oil seal has good sealing lip elasticity.

Vulcanization

The vulcanization process is used to improve the high temperature resistance, wear resistance and aging resistance of the rubber, ensuring the stability of the oil seal in long-term use.

Thread processing

The threads are precisely machined on the outside of the oil seal to ensure a tight fit with the equipment housing or bearing seat during installation.

Quality Inspection

The sealing lip and mounting surface are processed precisely to ensure the sealing effect and installation accuracy of the oil seal.

Packaging and delivery

The product is well packaged to ensure safety during transportation.

Standard external thread frame oil seal

Suitable for most general applications, with good sealing effect and stability

High temperature external thread frame oil seal

Made of high temperature resistant materials, suitable for high temperature working environment

Chemical resistant external thread frame oil seal

With stronger chemical corrosion resistance, suitable for special chemical media

Double lip type external thread frame oil seal

Designed with double sealing lips to enhance the sealing effect, suitable for complex working conditions

Customized external thread frame oil seal

Customize different sizes, thread specifications and special design requirements according to customers' specific needs

type

06.

Application
Scenario

Automotive Industry

Used for sealing of automobile drive shafts, wheels, differentials and other parts to prevent oil leakage and protect internal systems

Industrial Equipment

Such as the sealing of gear boxes, hydraulic pumps, compressors and other equipment to ensure that lubricating oil does not leak

Engineering Machinery

Such as drive shaft seals for excavators, bulldozers and other equipment to protect transmission systems and bearings

Shipping industry

Used for ship gearbox and transmission shaft seals to retain oil and prevent external pollutants from entering

Agricultural machinery

Sealing systems for equipment such as tractors and harvesters

Mining machinery

Such as the sealing of mining vehicles and mining equipment to ensure the normal operation of the equipment

07.

Features

Threaded mounting design

External thread design facilitates tight installation with equipment housing or other components to ensure sealing effect

Double sealing effect

Usually equipped with a double-lip seal design to enhance sealing performance and prevent oil leakage and external contaminants from intruding

High temperature resistance

Able to work stably in high temperature environment, suitable for harsh working conditions

Strong wear resistance

High-quality rubber material, with strong wear resistance, extending the service life of the product

Resistance to aging

Long service life, suitable for high-frequency use, reducing replacement frequency

Easy installation

The threaded design simplifies the installation process and provides a more convenient installation method

Widely used

Applicable to a variety of devices and industries, with high versatility and adaptability

After-sales guarantee

1

 / 

7

Service response speed
Technical Support and Guidance
Product Repair and Replacement
Spare Parts Supply
Regular Inspections and Maintenance
Customer Training and Education
Global After-Sales Service Network
We promise to respond quickly within 24 hours after customers submit after-sales service requests. Whether it is product failure, technical consultation or quality issues, customers can get timely support from our team. The after-sales service platform we provide supports 24-hour communication, ensuring that customers can get in touch with us at any time.
We provide comprehensive technical support, including product installation, debugging, operation training, and troubleshooting. Our experienced team offers professional advice and solutions to ensure optimal product performance. For complex issues, we also provide remote diagnostics and on-site support.
For products within the warranty period or those with quality issues, we offer free repair or replacement services. Our repair services include fault diagnosis, part replacement, and system debugging to restore the product's original performance and minimize downtime.
We offer a full range of spare parts to ensure any component damage is promptly addressed. All parts meet factory standards and undergo strict quality testing to guarantee high quality and long-term stability.
We provide scheduled inspections and maintenance services based on customer needs. This includes performance assessments, component checks, seal inspections, and maintenance recommendations to prevent downtime and ensure optimal product performance.
To ensure efficient operation and maintenance, we offer professional training services. The training covers proper product use, daily maintenance, and handling common issues. We also provide regular workshops and online educational resources to help customers improve efficiency and reduce maintenance costs.
We have after-sales service centers in multiple countries and regions to meet the needs of customers worldwide. Our international service network offers local support, efficient logistics, and technical consultation to ensure seamless product integration and timely response globally.

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